Experimental CORN HYBRIDS TESTED IN 1956 By R. W. Jugenheimer and K. E. Williams Bulletin 606 UNIVERSITY OF ILLINOIS AGRICULTURAL EXPERIMENT STATION Location of regular experimental-hybrid test fields CONTENTS Page MATERIAL TESTED 3 MEASURING PERFORMANCE 6 RESULTS OF THE TESTS 6 NORTHERN ILLINOIS Double crosses ( Table 2) 10 Single and double crosses ( Table 3) 13 NORTH-CENTRAL ILLINOIS Double crosses ( Table 4) 14 CENTRAL ILLINOIS Double crosses ( Table 5) 17 Double crosses ( Table 6) 18 Three-way, single, and double crosses (Table 7) 21 Single and double crosses ( Table 8 ) 22 Single and double crosses ( Table 9 ) 23 SOUTH-CENTRAL ILLINOIS Double crosses ( Table 10 ) 24 Single and double crosses ( Table 11) 27 Top and double crosses ( Table 12 ) 28 PERFORMANCE OF LINES IN SINGLE CROSSES ( Table 13 ) 29 DOUBLE-CROSS HYBRID NUMBERS, PEDIGREES, AND INDEX (Table 14) 30 Acknowledgment is doe W. T. Schwenfc and Sons, Edwards, Illinois, for providing land for one of the tests. Dr. W. C. Jacob, Professor of Agron- omy, for valuable computational and statistical assistance, and to D. C. Allison and A. J. Crowley for aid in field and laboratory work. Urbana, Illinois January, 1957 Publications in the Bulletin series report the results of investigations made or sponsored by the Experiment Station EXPERIMENTAL CORN HYBRIDS TESTED IN 1956 By R. W. JUGENHEIMER and K. E. WILLIAMS' THIS REPORT summarizes the results of advanced tests of experi- mental corn hybrids conducted in 1956 by this Station. Data from many preliminary tests involving specialized phases of the corn-research program were not included in this bulletin. Trials were made at four locations: in DeKalb county in northern Illinois, in Peoria county in north-central Illinois, in Champaign county in central Illinois, and in Fayette county in south-central Illinois. These four locations are representative of the soil, rainfall, and length of growing season in their respective areas. Hybrids were compared for yield, maturity, resistance to lodging, and other agronomic characters. Only hybrids of similar maturity were tested on the same field. A familiar hybrid whose maturity was con- sidered the standard for the group is named in each table heading. Since most of the hybrids whose performance is recorded here are not yet in commercial use, the information about them is of most value to producers of hybrid seed. The 1956 performance of hybrids available in commercial quantities to farmers is reported in Bulletin 605 of this Station. MATERIAL TESTED One hundred and seventy-nine different double-cross hybrids were grown at the four locations. Most of the Illinois hybrids were developed by the senior author. The seed was produced by controlled hand- pollination. Two sets of single crosses, one set of top crosses, and one set of three-way crosses differing in maturity were tested in 1956. The three- way crosses and top crosses (Tables 7 and 12) are a part of the "uni- form" tests conducted cooperatively by corn-belt states, including Illi- nois, and the U. S. Department of Agriculture. Seed of the unreleased inbred lines involved in these crosses was contributed by the state or by the federal corn breeder who developed them. Single crosses whose per- formance is reported in Tables 3, 8, 9, and 11 were developed by the Illinois Station and tested only in Illinois. 1 R. W. JUGENHEIMER, Professor of Plant Genetics and K. E. WILLIAMS, Field- man in Agronomy. 4 BULLETIN No. 606 [January, The following individuals are responsible at the present time for collecting seed of inbred lines, making the crosses, and distributing crossed seed of the entries in the cooperative uniform tests: J. H. Lonnquist (Nebraska), R. W. Jugenheimer (Illinois), and G. F. Sprague (Iowa) Table 7; and W. R. Findley (Kansas) and M. S. Zuber (Missouri) Table 12. In order to make the results of corn research more quickly available to the public, the University of Illinois has adopted a slight modification of the "delayed release" policy as it pertains to Illinois-developed inbred lines. Inbred lines of corn developed by the University of Illinois may be released to the public when they have demonstrated superior combin- ing ability for yield, standability, disease resistance, insect resistance, chemical composition, male sterility, or other characters. Such Illinois lines may form a part of a new hybrid or be used in other ways by corn breeders. Inbred lines of corn developed by others will not be released without their approval. Hand-pollinated inbred seed of released lines will be available for a fee in packets containing 25 to 100 kernels. Releases will be announced annually on or about April 1. The University of Illinois does not produce hybrid seed corn in commercial quantities. Hybrids that include new inbred lines may be produced under the delayed-release program adopted by the states in the corn belt. Multiplication of a new line is handled by the Station, and the production of single crosses in quantity is handled by the Illinois Seed Producers Association, Champaign, Illinois. If a new Illinois experimental hybrid gives satisfactory performance, the parental lines eventually are released for use by seedsmen. Table 14 (see pages 30 to 32) lists the double-cross hybrids whose performance is shown in this report and the tables in which each ap- pears. It also contains the pedigrees of the hybrids tested. In the pedi- grees, the order of the single crosses and of the lines in the single crosses has no significance; it does not indicate which should be used as seed or pollen parent. Illinois yellow hybrids are numbered consecutively below 2000 and above 3000. White hybrids are numbered in the 2000 series; these white hybrids are usually followed by the letter W. Hybrids that have per- formed well after regional testing in several corn-belt states have been designated AES (Agricultural Experiment Station) hybrids. Hybrids in the 600 series are similar to Illinois 1277 in maturity; those in the 700 series correspond in maturity to Illinois 21; those in the 800 series correspond to U.S. 13; and those in the 900 series to Illinois 448. 7957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 5 The letter A or B following an Illinois hybrid number indicates that the combination of inbred lines making up the hybrid has been rear- ranged or permuted. For example, if the original pedigree of an Illinois hybrid was (1X2) (3X4), the letter A following the number means that the hybrid was put together (1X3) (2 X 4), the letter B, (1 X 4) (2 X 3). A difference in reciprocals is not recognized in this method. When a short dash (-) followed by a number occurs as part of an Illinois hybrid number, it means that a tested related line has been substituted for one of the inbred lines included in the original hybrid. Performance of three-way and single-cross hybrids is of interest to corn breeders, producers of hybrid seed corn, and to farmers. Charac- teristics of single crosses such as yield, standability, seed size, shape, and quality definitely affect the practical production of hybrid seed corn. Some farmers are interested in growing single-cross and three-way- cross hybrids commercially because of their attractive appearance and extreme uniformity. Use of single-cross and three-way-cross data for the prediction of desirable double-cross combinations creates additional interest in the performance of single crosses and three-way crosses. Prediction studies are an extremely valuable part of a research pro- gram. Methods are available to predict the performance of the better hybrid combinations without making and testing large numbers of un- desirable crosses. For example, 1,225 single crosses and 690,900 double crosses are possible with 50 inbred lines. However, by using single-cross performance data, the corn breeder can predict which of the many possible double-cross combinations are likely to be most desirable. The following six single crosses can be made with four inbred lines: A X B, A X C, A X D, B X C, B X D, and C X D. The average performance of the four non-parental single crosses gives the predicted performance of a specific double-cross hybrid. For instance, the average yields of the four single crosses A X C, A X D, B X C, and B X D give the pre- dicted yield of double cross (AXB) (CXD). The procedure in pre- dicting acre yields and percentage of erect plants from single-cross data is shown on page 6 of Illinois Agricultural Experiment Station Bulletin 597. Similar predictions can be made for other characteristics. Predicted hybrid combinations, however, should always be thoroughly tested under field conditions before being put into commercial production. Three-way crosses also provide useful predictions of the perform- ance of double-cross hybrids. A large number of inbred lines can be compared, and the method is especially valuable where a desirable seed- parent single cross is available for use as a tester. Three-way crosses 6 BULLETIN No. 606 [January, provide information on specific hybrids and may often eliminate the time and expense required for testing inbred lines in top crosses and single crosses. The procedure in predicting acre yields and percentage of erect plants from three-way-cross data is also shown on page 6 of Bulletin 597. MEASURING PERFORMANCE All plots in these tests were planted, thinned, and harvested by hand in well- fertilized fields prepared in the usual way for corn. Individual plots were 2X5 hills in area. Six kernels were planted in hills spaced 40 inches apart. The plots were thinned to 4 plants per hill at DeKalb, Peoria, and Champaign, and to 3 per hill at Brownstown (Table 1). Table 1. GENERAL INFORMATION: Tests of Illinois Experimental Corn Hybrids, 1956 County" Section of state Number of hills per plot Plants per hill Date of Planting Har- vesting DeKalb . . . Northern 10 10 10 10 4 4 4 3 May 22 May 17 May 10 June 5 Oct. 25 Oct. 18 Oct. 30 Nov. 8 Peoria North-Central Champaign . . . . Central Fayette South-Central The fields are located near the following cities and towns: in DeKalb county near De- Kalb, in Peoria county near Peoria, in Champaign county near Urbana, and in Fayette county near Brownstown. Lattice-square designs were used to obtain the data reported in Tables 2, 3, 4, 5, 6, 8, 9, 10, and 11. The data in Tables 7 and 12 were obtained in randomized blocks. Data in all of the tables are the means of four replications per entry. RESULTS OF THE TESTS Data obtained from the tests are summarized in Tables 2 to 12. Long-time averages are more reliable indexes of the performance of hybrids than a single year's result. The parts of the tables summarizing the results of two or more years therefore deserve the most weight when the results are studied. Hybrids are listed in the tables in the order of their yield. Acre yields are reported as shelled grain containing 15.5 percent moisture, the maximum allowable for No. 2 corn. The crop from four replications of each entry at each location was shelled to determine the shelling per- 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 7 centage and moisture percentage. The percentage of moisture in the shelled grain was obtained with a Steinlite moisture meter. Erect plants at harvest and stand were determined from actual counts on all replica- tions of each test. Data from all plots are included in the report on yield. The only correction for imperfect stands was the following adjustment for miss- ing hills: /Number of hills\ /0.3 X Number of missingX Corrected _ Field y M> er P lot ' ^ hills P er P lot '_ weight - weight /Number of hills\ _ /Number of missingN Vper plot / Vhills per plot / This adjustment adds 0.7 percent of the average hill yield for each missing hill, and assumes that 0.3 percent is made up by the increased yield of surrounding hills. Relative performance cannot be determined with absolute accuracy by any method of testing. Small differences between entries are seldom of any significance. In fact, small differences are to be expected among plots planted even with the same lot of seed. Variations in growing con- ditions such as soil fertility are reduced but not completely eliminated by replicating the same entry several times in the same test. Unavoidable variation may be determined by a mathematical procedure known as analysis of variance. From this procedure figures may be obtained that represent the range which differences between two entries must exceed before those entries can be considered significantly different. The method used to determine this range is called the "Multiple Range Test." 1 This method considers the number of entries that fall within the range as well as the variability of the test. Data shown in boldface were not statistically different from the best performance for that characteristic. The following double-cross hybrids, arranged in order of yield, were outstanding in performance: Northern Illinois Five-year average: Table 2A AES 702, 111. 1555 A, 111. 1575, 111. 1277, ISP 2, 111. 1279, 111. 1280, 111. 1281, 111. 1289. Four-year average: Table 2B 111. 1555A, 111. 1861, AES 702, 111. 1277, 111. 1559B, 111. 1575, 111. 1863, 111. 1281, 111. 1279, 111. 1557. Three-year average: Table 2C 111. 1555A, 111. 1861, 111. 1281, AES 702, 111. 1559B, 111. 1575, 111. 1864, 111. 1279, 111. 2247W. 1 "Multiple Range and Multiple F Tests," by D. B. Duncan, in Biometrics 11 (1), 1-43, 1955. 8 BULLETIN No. 606 [January, Two-year average: Table 2D 111. 1555A, 111. 1936, 111. 1281, 111. 1864, 111. 1862, 111. 1863, ISP 2, 111. 1866, 111. 1559B. 1956 results: Table 2E 111. 1861, 111. 1864, AES 702, 111. 1956, 111. 1958, 111. 1960, 111. 1575, 111. 1936, 111. 1289. 1956 results: Table 3B 111. 1999, 111. 1969, 111. 1998, 111. 1966, 111. 1968. North-Central Illinois Five-year average: Table 4A 111. 1819, 111. 972A-1, 111. 274-1, 111. 1332, 111. 1511, 111. 1570, 111. 1831, 111. 1555A, 111. 1575, 111. 1814. Four-year average: Table 4B 111. 1819, 111. 1875, 111. 274-1, 111. 1332, 111. 1831, 111. 1511, 111. 1555A, 111. 1575, 111. 1814, 111. 1868. Three-year average: Table 4C AES 806, 111. 1912, 111. 1919, 111. 972A-1, 111. 274-1, 111. 1819, 111. 1875, 111. 1332, 111. 1555A. Two-year average: Table 4D 111. 1919, AES 806, 111. 1912, 111. 972A-1, 111. 274-1, 111. 1819, 111. 1280, 111. 1332, 111. 1555A. 1956 results: Table 4E 111. 1919, 111. 1819, 111. 972A-1, AES 805, 111. 1921, 111. 1971, 111. 1968, 111. 274-1, 111. 1873. Central Illinois 1956 results: Table 5 111. 1996, 111. 1981, 111. 1992, 111. 1978, 111. 1939, 111. 1982, 111. 2246W, 111. 1919, 111. 1943, 111. 1570A. Five-year average: Table 6A 111. 1421, 111. 1511, 111. 1332, 111. 274-1, 111. 972A-1, AES 801, 111. 1570, 111. 1777, AES 802. Four-year average: Table 6B 111. 1511, 111. 1332, 111. 1777, 111. 1813, AES 801, AES 802, 111. 1890, 111. 1880, AES 805. Three-year average: Table 6C 111. 1919, 111. 1913, AES 806, 111. 1909, 111. 1332, 111. 274-1, 111. 1916, 111. 972A-1, 111. 1421. Two-year average: Table 6D 111. 1919, 111. 274-1, 111. 1916, 111. 972A-1, 111. 1913, 111. 1332, 111. 1889, 111. 1421, 111. 1880. 1956 results: Table 6E 111. 1893, Ind. 5655, 111. 1919, 111. 1975, 111. 274-1, 111. 1916, 111. 1889, 111. 1909, 111. 1913. 1956 results: Table 7D 111. 1913, 111. 1918, 111. 1919. 1956 results: Table 9B 111. 1893, 111. 1856, 111. 1851, 111. 1889. South-Central Illinois Five-year average: Table 10A 111. 1851, 111. 1656, 111. 1859, 111. 1332, 111. 1349, AES 805, 111. 1849. Four-year average: Table 10B 111. 1851, 111. 1859, 111. 1656, 111. 1332, 111. 2246W, AES 805, 111. 1349, 111. 1856, 111. 1893. Three-year average: Table IOC 111. 1349, 111. 1893, 111. 1656, 111. 1849, 111. 1852, AES 805, 111. 1332, 111. 1909, 111. 1918. 7957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 9 Jwo-year average: Table 10D 111. 1851, 111. 1849, 111. 1893, AES 805, 111. 1656, 111. 1859, 111. 1909, 111. 1913, 111. 1918. 1956 results: Table 10E AES 904W, 111. 1849, 111. 1893, AES 903W, 111. 1913, 111. 1935, 111. 1332, 111. 1945, 111. 1948, 111. 1926. 1956 results: Table 11B GCP 6220, 111. 1889, 111. 1856, 111. 1913, 111. 1893. 1956 results: Table 12C AES 903W, 111. 1919, 111. 2235W, 111. 1918. The following single crosses, three-way crosses, and top crosses were outstanding in performance in 1956: Northern Illinois Table 3A WF9 X B37, WF9 X A545, B37 X A545, B37 X Oh28, WF9 X Oh43, A297 X Oh43, A545 X Oh43, Oh28 X Oh43. Central Illinois Table 7A K758 X (Hy XWF9), Tr-13634-17 X (Hy X WF9), 187-2-13657-6 X (Hy X WF9), Syn.I-13798 X (Hy X WF9), 38-11-13755-13 X (Hy X WF9). Table 7B K757 X (WF9 X 38-11), CI.30 X (WF9 X 38-11), Hy X (WF9 X 38-11), Tr-13633-8 X (WF9 X 38-11), Syn.I- 13798 X (WF9X 38-11). Table 8A R101 X R151, R105 X R151, R130 X R153, R105 X R154, R151 X R154, R153 X R154, R151 X WF9, R154 X WF9, R71 X R105, Hy2 X Oh7, WF9 X 38-11. Table 9A 38-11 X K201, C103 X Kyl26, K201 X Kyl26, Kyl26 X N82481, 38-11 X Oh7B, K712 X Oh7B, N82481 X Oh7B, Oh7B X CI.21E. South-Central Illinois Table 11A C103 X K201, K201 X K712, C103 X Kyl26, K712 X Kyl26, C103 X N82481, C103 X Oh7B, K201 X Oh7B, N82481 X Oh7B, K712 X Oh41, C103 X CI.21E. Table 12A CI.35 X (Mo. 804), K720 X (Mo. 804), K765 X (Mo. 804), K711 X (Mo. 804), Mo. 9689 X (Mo. 804), Oh7B X (Mo. 804). Table 12B K503-52 X (AES 903W), K689-53 X (AES 903W), K364-50 X (AES 903W), K709-53 X (AES 903W), K722-53 X (AES 903W), K242-51 X (AES 903W). 10 BULLETIN No. 606 [January, Table 2. DOUBLE CROSSES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1952-1956 (Data in boldface were not statistically different from the best performance for that characteristic) Rank A rrA Mois- in Entry *V*5 ture in yield ylel grain Shell- ing Erect plants Stand Ear Dropped - height ears A Five-year averages, 1952-1956 bu. perct. perct. perct. perct. in. perct. perct. 1 AES 702 115 22 77 92 99 45 2 111. 1555A 114 20 81 92 97 43 3 111. 1575 114 23 78 96 98 42 4 111. 1277 113 21 79 91 98 41 5 ISP 2 113 23 77 95 98 40 6 111. 21 111 22 78 88 97 47 7 111. 1279 Ill 21 79 94 97 40 8 111. 1280 Ill 21 79 91 96 40 9 111. 1281 Ill 21 79 93 97 39 10 111. 1289 Ill 21 77 95 98 38 11 111. 1559B 111 22 79 94 98 39 12 111. 101 110 21 79 92 98 38 13 111. 1091A 110 22 78 87 95 43 14 111. 1493 110 22 77 97 96 40 15 111. 1557 110 22 78 96 96 38 16 111. 1375 107 20 80 90 97 36 17 111. 1560A 107 21 78 98 98 39 18 Ohio K24 107 20 80 92 95 38 19 111. 1799 105 19 82 94 99 39 20 AES 610 101 20 80 91 96 33 Average. . . . 110 21 79 93 97 40 B Four-year averages, 1953-1956 1 111. 1555A 117 20 81 90 97 42 2 111. 1861 116 19 81 88 98 40 3 AES 702 114 22 78 90 99 46 4 111. 1277 114 21 80 89 98 42 5 111. 1559B 114 22 79 93 98 40 6 111. 1575. . 114 22 78 94 98 43 7 111. 1863 114 22 79 93 98 37 8 111. 1281 113 21 80 91 97 39 9 111. 1279 112 20 80 93 97 40 10 111. 1557 112 22 78 95 96 38 11 111. 1866.. 112 22 80 92 97 38 12 ISP 2 112 23 78 93 99 40 13 111. 21 Ill 22 78 85 96 47 14 111. 101 Ill 21 80 90 98 38 15 111. 1091A Ill 22 78 84 94 43 16 111. 1289 111 21 78 95 98 38 17 111. 1493 Ill 22 78 96 96 40 18 111. 1864 Ill 20 80 92 97 37 19 111. 1280 110 21 80 88 96 40 20 111. 1375 110 20 81 88 98 37 21 111. 1862 . . 110 21 80 91 96 35 22 111. 1560A 108 21 78 98 97 40 23 Ohio K24 108 20 81 90 95 38 24 111. 1799 106 19 82 93 99 38 25 AES 610 101 20 81 89 95 34 Average. . . . Ill 21 79 91 97 40 (Table is continued on next page) 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 11 Table 2. Continued Rank Mois- in Entry "i~,% ture in yield yleld grain Shell- Erect ing plants Stand Ear height D S5T ds ut C Three-year averages, 1954-1956 bu. perct. Perct, Perct. perct. in. perct. perct. i 111. 1555A.. . 121 22 80 88 97 44 4 2 111. 1861 119 20 80 84 99 40 2 3 111. 1281 118 22 80 89 99 41 2 4 AES 702 117 23 78 89 99 47 8 5 111. 1559B 116 23 77 91 98 42 3 6 111. 1277. . 114 23 79 86 98 44 4 7 111. 1575 114 24 77 93 98 45 3 8 111. 1864 114 22 78 90 96 38 4 9 111. 1279 113 22 79 92 96 41 3 10 111. 1375 113 22 80 85 97 38 2 11 111. 1557. . 113 24 78 93 97 40 3 12 111. 1866 113 23 79 90 96 40 1 13 111. 2247W 113 23 78 86 97 45 3 14 ISP 2 113 24 77 91 99 41 2 15 111. 1289 112 23 76 93 98 40 4 16 111. 1863. . 112 24 78 91 97 38 2 17 111. 101 Ill 22 79 88 97 40 4 18 111. 1091A Ill 23 77 80 94 45 2 19 111. 1493 Ill 24 78 95 95 42 2 20 111.21 110 23 77 82 97 47 3 21 111. 1862.. 110 23 80 89 95 36 3 22 111. 1280 109 23 79 85 95 42 3 23 111. 1560A 109 22 78 97 97 41 3 24 Ohio K24 109 21 80 88 95 39 3 25 111. 1799 108 20 81 91 99 39 3 26 AES 510... 106 20 80 92 95 40 4 27 AES 610 103 21 81 87 95 36 2 Average. . . . 112 22 79 89 97 41 3 D Two-year averages, 1955-1956 1 111. 1555A... 114 20 80 84 98 46 4 2 111. 1861 109 19 80 81 99 42 2 3 111. 1936 109 21 78 89 98 45 4 4 AES 702 108 22 78 86 99 52 10 5 111. 1281 107 20 80 86 98 41 2 6 111. 1375. . 107 20 80 82 98 38 2 7 111. 1864 107 20 78 88 96 42 3 8 111. 1862 106 22 80 87 98 39 4 9 111. 1863 106 22 78 90 98 40 3 10 ISP 2 106 22 78 88 98 44 2 11 111. 1866. . 105 22 79 90 97 41 2 12 111. 1277 104 21 80 83 100 44 4 13 111. 1559B 104 21 77 89 98 44 4 14 Ohio K24 104 20 80 85 96 40 2 15 111. 1279 103 20 80 92 96 42 2 16 111. 1575. . 103 22 78 91 98 46 3 17 111. 2247W 103 22 78 83 99 46 2 18 111. 1091A 102 22 78 74 92 46 2 19 AES 512 101 19 80 84 100 42 4 20 111. 1280 101 21 78 84 96 44 2 21 111. 1557. . 101 22 78 93 96 41 5 22 III. 1799 101 20 82 90 99 40 4 23 111. 101 100 20 80 84 98 40 4 24 111. 1289 100 21 76 94 98 40 4 25 111. 1560A 100 21 78 96 98 43 4 7.6 111. 1493 . . 98 22 78 94 96 42 2 27 III. 21 97 22 78 76 97 48 4 28 AES 510 96 18 80 92 96 40 6 29 AES 610 96 20 81 88 96 37 2 Average 103 21 79 87 98 43 3 (Table is concluded on next page) 12 BULLETIN No. 606 [January, Table 2. Concluded Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Draped Smut E 1956 results (4 replications) bu. perct. perct. perct. perct. in. perct. perct. i Iowa 4757 127 16 82 90 98 44 1 1 ?. 111. 1861 126 16 82 93 100 44 1 2 3 111. 1864 126 17 81 95 99 44 4 ISP 2 125 18 81 90 99 46 5 AES 702 124 19 78 97 99 45 1 6 111. 1956 . . 123 16 81 99 99 45 1 7 111. 1866 122 18 81 95 99 43 1 8 111. 1958 122 IS 82 94 99 45 1 9 111. 1960 122 16 80 100 99 45 1 10 111. 1557 121 19 79 96 99 43 1 11 111. 1575. . ' 121 17 79 96 99 47 1 12 111. 1902 121 19 80 87 99 45 2 13 111. 1936 121 18 80 95 100 47 14 111. 1289 120 17 79 100 99 40 1 2 15 111. 1493 120 18 80 96 99 43 1 16 111. 1555A... 120 16 82 95 100 43 1 17 111. 1862 120 19 81 98 99 41 1 1 18 111. 1961 120 16 81 99 99 44 19 111. 1962 120 15 80 98 100 45 20 Iowa 4779 120 19 81 98 98 39 1 71 111. 101 119 17 81 87 98 43 2 22 111. 1281 ' 119 17 80 87 100 44 1 23 111. 1559B 119 18 79 98 98 43 1 1 24 111. 1957 119 17 80 98 99 42 25 Ind. 5409 119 16 81 92 99 41 1 1 26 111. 21 118 18 80 76 99 45 4 3 27 111. 1277 118 18 81 94 100 44 1 78 111. 1280 118 18 81 87 98 51 3 29 Mich. 52-25 118 17 82 99 96 36 30 AES 512 117 16 83 89 100 42 1 31 111. 1863 . . 117 19 79 95 100 42 1 2 32 111. 1955 117 16 81 98 100 43 1 33 111. 1963 117 17 80 97 100 44 34 111. 2247VV 117 18 80 93 98 46 2 35 111. 1375 116 18 82 95 99 39 1 36 111. 1091A... 115 18 79 86 94 47 1 1 37 111. 1952 115 17 80 97 98 46 1 1 38 Mich. 53-151 115 16 80 96 99 45 1 1 39 Ohio K24 115 17 82 93 99 41 1 40 111. 1953 114 16 80 99 99 40 1 41 111. 1954. . 114 16 82 96 99 43 1 42 AES 510 113 15 83 96 99 40 1 1 43 111. 1560A 113 18 79 100 99 45 2 44 111. 1959 112 16 81 94 98 41 1 45 Minn. CB4621 112 17 83 98 99 45 1 46 AES 610. . . ... Ill 17 82 96 98 38 1 47 111. 1279 Ill 17 81 95 94 44 1 1 48 111. 1799 Ill 17 83 98 100 39 1 1 49 Minn. CB4603 109 17 81 99 100 44 1 1 Average 118 17 81 95 99 43 1 1 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 13 Table 3. SINGLE AND DOUBLE CROSSES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1956 from the best performance for that characteristic) Code Entry Acre yield grain ing ] Erect plants Stand Ear height "SST'smut A Single crosses bu. perct. perct. perct. perct. in. perct. perct. i M14XWF9. . 119 16 80 100 99 50 2 2 M14XB14 115 16 83 99 99 37 2 3 M14XB37 115 18 80 100 99 37 1 4 WF9XB14 119 16 80 99 98 47 5 WF9XB37 124 17 78 100 98 48 1 6 B14XB37... 115 16 79 99 99 45 1 8 WF9XB38 120 21 76 98 99 47 1 2 9 B14XB38 82 20 75 99 87 48 10 B37XB38 109 19 73 99 99 47 2 11 M14XA297 Ill 17 83 95 98 39 12 WF9XA297... 125 17 82 95 96 50 13 B14XA297 113 16 81 95 98 47 1 16 M14XA545 113 17 81 100 99 42 1 17 WF9XA545 125 17 81 98 99 50 18 B14XA545 118 15 81 99 98 46 19 B37XA545... 125 18 77 97 98 47 21 A297XA545 116 15 82 95 99 49 1 1 22 M14XN24 117 19 80 89 100 40 23 WF9XN24 126 17 81 94 100 47 1 24 B14XN24 129 16 82 93 100 44 1 25 B37XN24. . 127 18 78 99 99 44 1 27 A297XN24 126 18 83 86 98 47 28 A545XN24 119 16 82 83 100 51 2 29 M14XOh28 101 19 78 99 92 34 1 30 WF9XOh28 123 15 78 92 99 41 31 B14XOh28 109 17 78 97 96 40 1 32 B37XOh28 129 17 77 97 96 44 5 33 B38XOh28 125 20 75 99 99 46 2 35 A545XOh28 128 16 80 94 100 47 36 N24XOh28 124 17 81 89 99 41 37 M14XOh43. .. 118 18 81 99 99 31 38 WF9XOh43 127 18 81 99 98 43 39 B14XOh43 115 19 79 99 100 40 1 40 B37XOh43 125 19 79 100 99 38 42 A297XOh43 125 17 83 98 99 43 2 43 A545XOh43 124 17 82 100 98 42 44 N24XOh43 137 20 81 99 99 41 45 Oh28XOh43 139 17 80 98 98 38 Average 120 17 80 97 98 44 1 B Double crosses 34 111. 1970 121 19 82 87 98 46 1 48 111. 1999 120 18 80 94 98 44 1 26 111. 1969 119 18 80 98 99 47 1 47 111. 1998 119 18 80 96 99 47 1 1 14 111. 1966 118 18 79 97 99 48 1 1 20 111. 1968. . 117 17 79 95 99 50 1 2 46 111. 1277 116 17 79 92 97 42 1 2 7 111. 1280 116 18 79 82 98 51 1 41 111. 1971 115 16 80 97 100 47 2 49 111. 3000 113 19 79 98 96 42 1 15 111. 1967 106 17 79 98 99 45 1 1 Average 116 18 80 94 98 46 1 1 14 BULLETIN No. 606 [January, Table 4. DOUBLE CROSSES OF ILLINOIS 21 MATURITY Tested in North-Central Illinois, 1952-1956 (Data in boldface were not statistically different from the best performance for that characteristic) Rank A Mois- in Entry j! ture in yield yiel grain Shell- Erect ing plants Stand Ear Dropped c ~, height ears Smut A Five-year averages, 1952-1956 bu. perct. perct. perct. perct. in. perct. perct. 1 111. 1819 102 18 81 91 98 42 7. 111. 972A-1 101 20 81 90 96 46 3 111. 274-1 99 19 82 93 98 45 4 111. 1332 99 19 82 91 97 46 5 111. 1511 99 20 82 91 90 47 6 111. 1570. . 98 20 79 87 98 47 7 111. 1831 97 21 81 95 97 39 8 111. 1555A 96 16 84 94 98 40 9 111. 1575 96 20 80 93 98 41 10 111. 1814 96 21 81 96 96 39 11 111. 1760 94 21 78 91 96 42 12 111. 1277 93 19 83 91 97 40 13 111. 1280 93 18 82 89 96 40 14 AES 805 92 21 78 94 93 43 15 111. 1560A 91 17 81 96 97 39 16 AES 702 ... 89 20 79 92 96 42 17 111. 21 88 21 81 83 98 43 18 Iowa 4297 86 18 81 92 93 40 Average. . . . 95 19 81 92 96 42 B Four-year averages, 1953-1956 1 111. 1819. . 97 18 82 90 97 39 2 111. 972A-1 96 20 80 88 95 44 3 111. 1875 96 20 80 92 94 45 4 111. 274-1 95 19 82 92 98 42 5 111. 1332 94 19 82 90 96 44 6 111. 1570. . 94 20 80 85 98 44 7 111. 1831 93 20 82 94 96 37 8 111. 1511 92 20 82 90 88 44 9 111. 1555A 92 16 84 92 97 38 10 111. 1575 90 20 80 92 98 39 11 111. 1760. . 90 21 78 90 95 40 12 111. 1814 90 20 81 95 97 38 13 111. 1868 90 20 80 94 95 40 14 111. 1280 89 17 82 87 95 38 15 111.21 88 21 81 83 98 43 16 111. 1277. . 88 18 84 89 97 38 17 111. 2247W 88 19 80 84 96 42 18 AES 805 86 20 78 93 92 41 19 111. 1560A 86 17 82 95 96 37 20 111. 1863 86 19 82 95 95 36 21 111. 1873. . 86 19 80 96 96 36 22 AES 702 85 19 80 91 95 40 23 Iowa 4297 81 18 80 92 92 38 Average. . . . 90 19 81 91 95 40 (Table is continued on next page) 1957} EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 15 Table 4. Continued Rank A Mois- in Entry ^ ture . in yield gram Shell- Erect ing plants Stand Ear Dropped s t height ears C Three-year averages, 1954-1956 bu. perct. perct. perct. perct. in. perct. perct. 1 AES806... 102 22 80 91 99 40 5 2 111. 1912 102 20 81 86 96 42 4 3 111. 1919 102 20 81 90 97 42 3 4 111. 972A-1 101 21 80 89 98 43 2 5 111. 274-1 99 20 82 90 99 43 6 111. 1819.. 99 19 81 90 98 39 4 7 III. 1875 99 21 80 92 97 44 9 8 111. 1332 98 20 82 90 98 43 3 9 111. 1913 97 19 82 85 97 43 6 10 111. 1917 97 19 81 82 95 42 2 It 111. 1511 96 21 81 89 97 44 7 12 111. 1570 96 21 79 85 98 43 3 13 111. 1916 96 19 81 81 97 44 4 14 111. 1555A 95 17 83 93 99 39 3 15 111. 1760 93 22 78 89 99 40 4 16 111. 1831 93 22 81 94 99 37 2 17 111. 1280 92 18 81 87 97 38 6 18 111. 1575 92 22 79 92 99 40 6 19 111. 1814 92 21 80 94 98 38 2 20 111. 1868 91 21 80 95 97 40 4 21 111. 2247 W 90 20 80 85 98 41 4 22 111. 1277 89 19 83 89 97 39 1 23 111. 21 88 21 81 83 98 43 2 24 111. 1863 87 21 81 94 97 36 2 25 AES 702 86 20 79 94 96 41 2 26 AES805... 86 21 77 93 96 40 3 27 111. 1560A 86 18 80 94 98 38 1 28 111. 1873 86 20 78 96 98 36 3 29 Iowa 4297 83 20 79 91 98 38 4 Average. . . . 94 20 80 90 98 40 4 D Two-year averages, 1955-1956 1 111. 1919. . 101 20 81 92 96 41 2 2 AES 806 100 22 80 92 98 40 6 3 111. 1912 100 20 81 90 96 42 4 4 111. 972A-1 98 20 80 91 98 42 2 5 111. 274-1 97 20 82 92 99 42 6 111. 1875 96 21 80 92 96 42 10 7 111. 1916 96 19 81 87 96 42 4 8 111. 1917 96 20 81 84 94 42 3 9 111. 1819 95 18 81 96 98 38 2 10 111. 1913 95 19 82 90 96 42 7 11 111. 1280 94 18 82 92 96 40 6 12 111. 1332 94 20 82 92 98 42 2 13 111. 1555A 94 16 84 96 99 37 2 14 111. 1760 94 22 79 90 98 40 4 15 111. 1831 94 21 81 96 98 36 2 16 111. 1570. . 92 20 79 90 98 42 4 17 111. 1511 91 20 80 92 97 43 4 18 AES 805 90 21 78 93 96 40 2 19 111. 1575 90 22 80 92 99 38 8 20 111. 1814 90 21 80 98 96 38 2 21 111. 1863 . . 90 20 81 96 96 36 2 22 111. 1868 90 21 80 96 96 38 4 23 111. 1873 90 19 79 98 98 36 2 24 AES 702 88 20 80 97 94 41 2 25 111. 2247W 88 20 80 88 98 41 4 26 Iowa 4297 88 19 78 93 98 38 2 27 111. 1277 87 19 83 91 97 38 2 28 111. 1560A 85 18 81 96 97 37 1 29 111.21 80 20 81 90 99 39 2 Average. . . . 92 20 80 92 97 40 3 (Table is concluded on next page) 16 BULLETIN No. 606 [January, Table 4. Concluded Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear 1 height 3r e a P rs e< >s E 1956 results (4 replications) bu. perct. perct. perct. perct. in. perct. perct. i 111. 1919. . 135 15 84 91 95 49 4 3 2 111. 1912 133 15 84 83 97 50 7 5 3 111. 1819 131 14 85 93 99 46 1 2 4 AES 806 130 18 83 94 99 48 8 1 5 111. 972A-1 130 14 84 92 99 51 2 3 6 AES 805 ... 129 16 84 89 98 49 2 1 7 111. 1875 129 16 83 90 100 51 16 4 8 111. 1921 128 16 83 94 100 47 2 1 9 111. 1971 126 13 85 95 100 48 2 10 111. 1570 125 15 84 86 98 51 6 2 11 111. 1968. . 125 15 84 90 97 50 1 1 12 111.274-1 124 15 85 90 99 49 1 2 13 111. 1575 124 16 83 92 100 47 11 2 14 111. 1760 124 16 83 83 98 48 6 10 15 111. 1831 124 16 85 95 100 45 2 4 16 111. 1922. . 124 18 83 92 97 48 2 1 17 111. 1972 124 14 85 90 98 49 1 3 18 111. 1873 123 14 84 97 99 46 3 1 19 111. 1913 123 14 86 85 98 51 13 1 20 111. 1969 123 15 84 95 98 47 1 71 111. 1973 123 15 85 89 99 47 2 2 22 Iowa 4297 123 14 85 93 100 46 1 1 23 111. 1511 122 16 84 87 99 53 6 1 24 111. 1917 122 15 85 77 98 51 6 6 25 111. 1966 122 16 83 94 97 47 1 1 26 Nebr. 1924B 122 15 83 98 100 46 3 3 27 111. 1277 121 14 86 89 98 44 1 3 28 111. 1280 121 14 84 86 96 51 11 5 29 111. 1555A 121 12 87 96 99 45 3 3 30 111. 1916 121 14 84 79 99 53 8 4 31 111. 1927. . 121 16 81 94 98 47 6 1 32 111. 1970 121 14 86 95 99 48 1 33 111. 1928 120 18 83 90 98 51 3 7 34 111. 1814 119 16 85 97 99 44 2 1 35 111. 1868 119 16 84 96 99 45 2 2 36 111. 1930. . 119 18 83 90 95 50 4 3 37 111. 1936 119 14 84 93 100 47 2 2 38 AES 702 118 15 83 97 94 48 1 39 111. 1926 118 14 82 92 96 48 10 1 40 Iowa 4809 118 14 83 95 95 45 2 1 41 111. 1332. . . 117 15 85 91 96 52 4 1 42 111. 1863 116 15 84 94 99 43 2 1 43 Iowa 4879 115 14 83 96 99 45 3 1 44 111. 1560A 113 14 84 94 99 44 2 2 45 111. 1902 113 14 84 77 97 48 1 3 46 111. 1967. . 113 14 83 96 97 49 4 3 47 111. 2247W 113 15 84 86 98 50 5 2 48 111. 21 107 13 86 83 98 46 2 49 Ohio 5317 75 14 83 98 94 42 2 4 Average 121 15 84 91 98 48 4 2 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 17 Table 5. DOUBLE CROSSES OF U.S. 13 MATURITY Tested in Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Rank in yield Entry Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Dropped s ears Half- silk bu. Perct. Perct. Perct. perct. in. perct. perct. days 1 111. 1660. . 153 26 82 91 98 54 4 78 2 111. 1851 151 20 81 94 97 51 1 10 77 3 111. 1996 149 19 84 96 100 48 2 2 72 4 111. 1981 148 18 83 96 99 49 1 6 73 5 111. 1992 148 18 82 96 99 45 1 2 73 6 111. 1643. . 147 18 84 93 99 51 6 4 73 7 111. 1976 144 20 79 91 99 50 2 7 75 8 111. 1948 .... 143 20 83 92 99 48 1 8 70 9 111. 1978 143 18 82 96 100 48 4 2 73 10 111. 1995 143 18 84 84 99 51 3 6 72 11 111. 1939. . 142 21 81 100 99 46 1 5 72 12 111. 1947 142 20 82 89 99 50 1 5 72 13 111. 1951 .... 142 17 86 92 98 51 1 2 72 14 111. 1982 142 19 82 94 97 47 4 3 73 15 111. 1788A 141 18 81 83 99 48 4 2 73 16 111. 2246W. . 141 16 85 93 100 51 6 3 72 17 111. 1997 140 20 82 92 98 51 2 73 18 111. 1919 139 17 84 95 96 45 5 71 19 111. 1943 139 20 83 96 99 45 2 72 20 111. 1945 139 19 84 93 98 53 3 11 72 21 111. 1913 138 16 88 90 98 48 1 4 71 22 111. 1918 138 18 85 90 98 46 5 1 69 23 111. 1944 138 19 82 96 99 51 8 72 24 111. 1570A .... 137 18 84 95 99 48 5 72 25 111. 1942 137 21 81 95 99 52 14 74 26 111. 1949. . 137 21 81 98 99 46 1 4 71 27 111. 1980 .... 136 17 84 97 100 46 5 2 72 28 111. 1991 136 18 79 90 99 48 4 2 75 29 111. 1941 135 22 81 96 100 50 1 12 72 30 111. 1977 135 17 81 95 100 46 4 4 72 31 111. 1984 . . 135 20 80 91 99 48 1 71 32 111. 1994 135 20 80 94 98 46 2 2 73 33 111. 1332 134 16 82 91 99 49 6 5 72 34 III. 1570-1 134 19 82 96 99 47 4 1 71 35 111. 1946 134 19 79 90 99 54 1 11 73 36 111. 1983 . . 134 15 85 96 99 45 4 4 70 37 111. 1985 133 18 83 92 98 46 4 1 71 38 111. 1987 133 17 81 94 99 49 7 2 72 39 111. 1938 131 23 79 96 99 46 5 73 40 111. 1940 131 22 82 98 99 46 8 72 41 111. 1570. . 130 18 83 89 98 48 5 3 71 42 111. 1986 130 17 85 99 96 43 6 71 43 111. 1950 128 22 81 97 99 48 1 1 73 44 III. 1880 .... 127 16 85 92 99 46 7 1 72 45 III. 1979 126 17 81 92 99 48 10 74 46 111. 1993. . 126 17 83 96 99 44 2 3 72 47 111. 1990 122 17 84 98 99 38 1 69 48 111. 1988 120 17 83 94 98 44 3 1 71 49 111. 1989 119 18 82 97 99 41 5 1 71 Average .... 137 19 82 94 99 48 3 4 72 18 BULLETIN No. 606 [January, Table 6. DOUBLE CROSSES OF U.S. 13 MATURITY Tested in Central Illinois, 1952-1956 (Data in boldface were not statistically different from the best performance for that characteristic) Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect Stand plants - Ear Dropped c . Half- height ears nut silk A Five-year averages, 1952-1956 bu. perct. perct. Perct. perct. in. perct. perct. days 1 111. 1421 102 17 84 78 97 45 ? 111. 1511 102 16 84 79 99 48 3 111. 1332 101 15 83 83 97 46 4 111. 274-1 100 16 83 78 98 46 5 111. 972A-1 100 16 81 78 99 47 6 AES 801 ... 98 16 80 86 97 41 7 111. 1570 97 17 82 77 99 48 8 111. 1777 96 16 82 80 99 45 9 U.S. 13 96 16 82 75 97 52 10 AES 802 95 16 81 82 92 44 11 111. 1767 93 17 81 78 98 45 12 AES 803 91 16 81 82 97 42 13 AES 805 91 17 82 86 96 44 14 111. 21 91 16 83 79 97 46 Average. . . . 97 16 82 80 97 46 B Four-year averages, 1953-1956 i 111. 1511 102 16 84 76 98 48 2 111. 1332 101 15 84 80 97 46 t 111. 1421 101 16 84 74 97 44 4 111. 972A-1 99 16 81 74 98 47 5 111. 274-1 98 16 84 73 97 46 6 111. 1570 98 17 83 71 98 48 7 111. 1777 96 16 82 76 99 45 8 111. 1813 96 18 82 80 96 43 9 U.S. 13 96 16 83 71 96 51 10 AES 801 94 16 80 82 96 41 11 AES 802 ... 94 16 82 79 92 44 12 111. 1890 94 16 82 83 98 43 13 111. 1767 92 16 82 74 98 45 14 111. 1880 91 15 83 76 96 43 15 AES 805 89 17 83 83 96 44 16 AES 803.. . 88 16 82 79 96 42 17 111. 21 88 16 84 74 96 46 18 111. 1889 88 18 79 85 98 45 Average 95 16 82 77 97 45 (Table is continued on next page) 1957} EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 19 Table 6. Continued Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect c , j plants Stand Ear height Dropped ~ t Half- ears Stn L silk C Three-year averages, 1954-1956 bu. perct. perct. Perct. perct. in. perct. perct. days i 111. 1919 112 16 84 71 95 44 1 2 111. 1511 110 17 85 73 98 47 10 3 111. 1913 109 16 86 71 97 44 4 4 AES806 108 18 84 71 98 41 8 5 111. 1909 108 16 85 71 98 47 7 6 111. 1332 107 16 84 77 96 45 6 7 111.274-1 106 16 84 73 97 45 2 8 111. 1916 106 16 85 72 98 45 5 9 111. 972A-1 105 16 81 74 99 45 5 10 111. 1421 105 17 84 75 96 43 2 11 111. 1918. . 105 16 83 70 97 45 5 12 111. 1570 103 17 83 72 99 47 10 13 U.S. 13 103 16 83 71 96 50 10 14 111. 1777 101 17 83 74 99 43 4 IS 111. 1813 101 18 83 78 98 43 9 16 AES 801 .. 100 16 80 81 97 40 3 17 111. 1912 100 16 83 72 96 43 5 18 111. 1890 98 17 82 82 97 42 7 19 AES 802 97 16 82 79 91 43 7 20 111. 1767 96 17 82 74 98 44 6 21 111. 1880 96 15 83 74 97 42 5 7.7. AES 803 93 17 82 78 97 42 4 23 AES 805 92 17 83 83 95 43 5 24 111. 21 92 16 84 74 97 44 7 25 111. 1889 92 18 79 83 98 43 4 Average. . . . 102 17 83 75 97 44 6 D Two-year averages, 1955-1956 i 111. 1919 122 16 84 62 94 48 2 2 111.274-1 120 16 85 62 95 49 3 3 111. 1909 120 16 86 62 98 50 9 4 111. 1916 118 15 86 64 98 48 6 5 AES 806 116 18 84 63 98 44 8 6 111. 972A-1 116 16 83 70 99 48 8 7 111. 1913 116 16 86 60 98 46 4 8 111. 1332 115 16 85 71 96 47 8 9 111. 1511 115 16 86 66 98 49 12 10 111. 1889 115 16 82 75 98 46 4 11 111. 1421 114 16 86 68 95 46 2 12 111. 1813 114 18 84 72 96 46 12 13 111. 1918 114 16 84 62 96 48 6 14 111. 1880 112 15 84 68 96 45 6 15 111. 1890 112 16 84 76 96 44 10 16 111. 1912 112 16 85 61 96 46 6 17 AES 805 110 16 86 76 98 47 8 18 AES 807W 110 18 84 69 98 46 4 19 AES 801 109 16 82 74 96 42 4 20 111. 1767 109 16 82 67 98 46 8 21 U.S. 13 109 16 84 63 96 54 13 22 111. 1570 108 16 84 66 98 50 10 23 AES 802 107 16 84 70 96 45 8 24 AES 803 106 17 84 70 96 46 4 25 111. 1777 105 16 84 66 98 45 4 26 111. 21 98 16 84 63 96 45 6 Average. . . . 112 16 84 67 97 47 7 (Table is concluded on next page) 20 BULLETIN No. 606 Table 6. Concluded Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Dr ea P rf *s, Half- silk E 1956 results (4 replications) bu. perct. perct. perct. perct. in. perct. perct. days 1 111. 1893 148 15 83 95 96 49 3 8 74 2 Ind. 5655 144 16 88 97 98 43 2 4 72 3 111. 1511 143 15 87 93 99 49 10 7 71 4 111. 1919 143 15 85 88 93 47 1 4 70 5 111. 1975 143 17 83 89 98 60 2 5 75 6 111.274-1 ' 142 15 85 94 99 47 3 2 72 7 111. 1916 142 14 87 93 100 49 4 6 71 8 111. 1889 141 15 84 92 99 45 2 7 72 9 111. 1909 140 15 87 87 100 50 7 2 70 10 111. 1913 139 15 88 91 98 47 2 2 70 11 AES 806 138 17 85 94 98 43 5 6 70 17. 111. 1890 . . . . 138 15 86 94 98 43 6 2 70 13 111. 1332 137 15 86 89 99 48 9 71 14 111. 1813 136 17 86 96 94 44 7 2 71 15 111. 1912 135 15 85 87 97 47 7 6 71 16 AES 80S.. . 134 16 87 90 98 46 4 2 71 17 111. 972A-1 134 15 84 92 100 45 4 3 71 18 111. 1918 134 15 86 92 97 46 5 1 70 19 111. 1927 134 15 83 96 99 46 3 1 71 20 AES 807W 133 16 85 96 98 43 3 70 21 111. 1570 133 15 86 82 99 51 4 4 71 22 111. 1656 133 15 86 89 99 49 4 2 71 23 111. 1421 132 15 85 93 97 47 1 2 72 24 111. 1928 132 16 84 92 96 47 3 7 71 25 111. 1973 132 15 86 91 100 46 1 3 72 26 AES 801 .. 131 15 83 92 97 40 3 1 74 7.7 111. 1964 131 15 85 84 97 54 1 1 73 28 111. 1972 131 15 85 93 100 44 1 2 71 7.9 Iowa 4912 131 15 84 92 97 46 3 2 70 30 111. 1921 130 16 86 94 97 43 7 1 71 31 111. 1922. . 130 17 83 95 100 44 6 1 72 32 U.S. 13 130 16 85 87 96 53 8 3 72 33 AES 802 129 15 85 94 99 42 6 2 70 34 Mo. 4060AW 129 15 83 96 98 44 3 2 70 35 111. 1880 128 14 85 93 98 46 4 1 70 36 Ind. 4655 128 16 85 98 99 38 3 2 71 37 Iowa 4903 128 14 85 97 97 39 4 1 71 38 111. 1926 127 15 84 92 96 44 8 4 70 39 111. 1974 127 15 86 94 100 45 5 70 40 AES 702 126 16 84 89 100 46 6 3 70 41 111. 1767.. 125 16 84 91 95 45 4 1 70 42 AES 808 124 15 87 92 96 40 5 1 72 43 Ind. 4656 124 16 86 94 97 40 1 2 71 44 111. 1777 123 15 85 94 98 43 4 71 45 AES 803 120 16 84 94 99 44 1 4 72 46 111. 1965. . 119 15 85 77 90 52 4 1 74 47 111. 1902 117 15 85 86 97 42 5 4 71 48 III. 21 114 15 84 90 94 40 1 1 70 49 111. 1935 109 16 84 100 94 42 3 9 72 Average 132 15 85 92 98 46 4 3 71 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 21 Table 7. THREE-WAY, SINGLE, AND DOUBLE CROSSES OF U.S. 13 MATURITY Tested in Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield Mois- gh e ii grain Erect t plants v ** bffit D S5 ed sur Half- silk A- - Inbred lines crossed with (Hy X WF9) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 K706. bu. 121 perct. perct. 16 84 14 81 15 85 15 83 16 86 17 83 16 83 15 83 15 83 16 81 16 80 15 85 15 82 15 86 16 85 15 84 15 84 14 83 15 83 15 83 perct. perct. 94 98 88 99 91 98 91 100 92 100 91 99 94 100 85 99 87 99 89 99 86 99 92 99 91 100 96 100 73 100 98 98 84 83 90 99 87 99 89 98 in. perct. 46 4 43 1 41 2 50 6 41 3 45 4 45 6 54 14 45 1 52 1 56 9 44 9 46 7 52 3 51 10 41 3 49 9 50 9 49 6 47 6 perct. 1 1 3 1 4 1 2 1 9 2 4 2 1 2 days 68 68 69 70 69 69 70 71 70 70 71 69 70 71 71 70 69 70 70 70 K756 119 K758 . . . . 134 K759 129 Moll090 . 129 Moll072 120 CI 30 141 CI.32 144 B39 133 B40 . 135 L317. . 137 TR-13634-17 136 TR-13633-8 ... 125 187-2-13657-6 140 Mo940- 13662 146 Syn. 1-13798 143 38-11 125 38-11-13755-13 ISO CI.38B . . . . 134 134 B Inbred lines crossed with (WF9 X 38-11) 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 K756.. . 106 15 14 14 16 16 17 15 16 15 14 15 14 15 15 14 14 15 15 14 15 81 84 85 85 85 83 85 83 87 82 83 83 84 86 85 86 87 86 84 84 80 93 94 91 89 94 93 78 85 87 87 84 89 89 89 94 80 85 97 88 98 94 98 100 100 99 100 99 99 99 96 97 100 99 99 100 99 99 99 99 42 49 43 50 44 43 44 56 51 44 48 55 50 44 47 48 53 55 47 48 2 3 2 2 1 7 15 6 3 1 25 8 10 3 11 5 8 4 6 1 2 1 2 3 7 2 6 1 19 3 2 3 14 3 3 2 4 68 69 70 70 70 69 70 72 72 70 69 72 70 69 71 71 72 72 70 70 K757 137 K758. . . . . 128 K759 139 Moll090 128 Moll072... 115 CI.30 135 CI.32.. 144 CI.42A 135 B39 130 B40 . . . 126 L317 134 Hy 135 Tr- 13634- 17 131 Tr- 13633-8 135 187-2-13657-6 128 Mo940-13662 . 157 Hyl3706 147 Syn. 1-13798 138 Average 133 c- Single crosses 20 40 Hy2XWF9 117 15 14 14 83 86 84 77 86 82 99 99 99 49 48 48 7 6 6 1 70 69 70 WF9X38-11 136 Average 127 D Double crosses 41 44 42 43 111. 1913. . .... 141 14 87 15 84 15 83 14 84 14 84 83 82 85 93 86 96 100 99 92 97 52 53 49 49 51 5 8 3 2 4 3 2 2 8 4 69 70 69 69 69 U.S. 13 .... 138 111. 1918 134 111. 1919 .... 134 137 22 BULLETIN No. 606 [January, Table 8. SINGLE AND DOUBLE CROSSES OF U.S. 13 MATURITY Tested in Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield Mois- ture in grain Shell- ing 5 S tt d Ear height ears 'Smut Half- silk A Single crosses bu. perct. perct. perct. perct. in. perct. perct. days i R101XR105 129 17 84 93 99 46 3 71 2 R101XR130 . . 134 14 84 94 100 51 3 69 3 R101XR151 . . 142 16 84 96 99 47 1 64 4 R105XR130 . . 135 16 84 90 99 57 2 4 72 5 R105XR151 . . 143 16 84 97 99 48 1 1 67 6 R130XR151 . . 134 15 86 85 98 52 2 3 68 7 R101XR153 . . 118 17 83 95 99 50 5 70 8 R105XR153 . . 139 22 81 86 98 52 4 71 9 R130XR153 . . 144 16 83 87 100 55 1 3 70 10 R151XR153 . . 136 17 84 88 98 50 3 68 11 R101XR154 135 15 85 94 96 51 6 64 12 R105XR154 . . 140 16 87 87 97 56 1 6 70 13 R130XR154 . . 142 14 86 80 99 61 4 9 70 14 R151XR154 . . 140 15 86 91 99 52 1 66 15 R153XR154 . . 139 15 85 96 99 53 7 68 16 R101XWF9 137 15 84 85 96 46 2 66 17 R105XWF9 . . 143 17 85 94 99 49 2 69 18 R71XR168 . . 112 16 82 99 98 45 1 5 68 19 R151XWF9 . . 143 15 87 89 99 47 4 1 65 20 R153XWF9 . . 144 16 83 69 98 50 1 69 21 R154XWF9.... 145 15 86 88 98 52 1 1 66 23 R105XCI.38B . . 136 18 82 85 96 56 1 5 73 24 R130XCI.38B . . 142 16 83 83 100 58 3 4 71 25 R151XCI.38B . . 142 16 85 58 98 57 3 71 26 R153XCI.38B 138 17 81 79 100 54 1 3 73 27 R154XCI.38B . . 142 15 85 70 100 58 5 10 72 28 WF9XC1.38B . . 137 16 81 85 99 55 3 1 71 29 R101XCI.42A . . 145 16 85 84 99 53 1 7 70 30 R105XCI.42A . . 135 19 86 94 98 52 9 72 31 R130XCI.42A 126 15 85 88 96 60 1 18 72 32 R151XCI.42A .. 131 17 85 84 97 54 5 71 33 R153XCI.42A . . 140 18 83 78 99 57 6 71 34 R154XCI.42A . . 135 15 87 85 98 54 28 70 35 WF9XCI.42A . . 146 16 86 84 98 53 1 1 71 36 CI.38BXCI.42A... 132 16 83 58 98 61 1 10 74 37 R71XR105 . . 137 17 84 93 99 48 1 5 70 38 R105XCI.317B .. 135 25 81 96 97 66 2 8 76 39 R130XCI.317B .. 125 15 80 87 98 64 6 12 74 40 R151XCI.317B . . 139 18 82 90 98 65 8 74 41 R153XCI.317B 140 20 80 84 99 63 3 74 43 R163XR168 . . 122 15 82 84 95 49 4 69 44 CI.38BXCI.317B.... .. 127 18 77 84 99 67 1 4 76 45 CI.42AXCI.317B.... .. 135 17 81 90 96 68 3 5 74 47 Hy2XWF9 .. 117 16 84 51 100 53 6 69 48 Hy2XOh7. . 144 16 84 92 99 50 69 49 WF9X38-11 . . 142 14 86 95 98 48 2 2 69 Average . . 136 16 84 86 98 54 2 5 70 B Double crosses 22 111. 1332. . . . . 140 15 85 86 98 55 3 3 70 46 111. 1948 . . 140 16 84 92 98 53 2 6 66 42 111. 1570 . . 133 15 83 78 99 53 5 5 69 Average . . 138 15 84 85 98 54 3 5 68 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 23 Table 9. SINGLE AND DOUBLE CROSSES OF U.S. 13 MATURITY Tested in Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Acre Mois- Shell- Erect Ear Dropped Half- Code Entry yield ture in ing plants Stand height ears Smut silk gram A Single crosses bu. perct. perct. perct. perct. in. perct. Perct. days i C103X38-11 129 13 86 97 99 50 7 2 76 2 C103XK201 . . 137 21 78 88 94 55 3 3 77 3 C103XK712 . . 128 17 84 100 89 48 6 8 76 4 38-11 XK201 . . 143 17 84 91 100 52 6 19 76 3 38-11XK712 .. Ill 16 84 96 100 51 4 24 76 6 K201XK712. . . . . 136 24 81 93 94 50 1 12 78 7 C103XKyl26 ... 151 20 82 94 99 50 3 14 78 8 38-llXKyl26 . . 156 16 85 86 98 54 3 4 76 9 K201XKyl26 . . 164 22 82 92 98 56 4 79 10 K712XKyl26 ... 112 22 82 99 98 52 1 9 80 11 C103XN82481. . . . . 130 18 81 91 86 52 1 3 76 12 38-11 XN82481 . . . 133 16 87 80 99 50 4 9 77 13 K201XN82481 . . . 142 20 79 92 98 60 1 1 78 14 K712XN82481 . . . 145 19 82 86 100 57 1 6 78 15 Kyl26XN82481 . . 162 21 84 98 100 54 1 1 78 16 Cl03XOh7B... 137 14 81 98 100 48 75 17 38-11 XOh7B . . . 144 14 86 96 98 48 18 76 18 K201XOh7B . . 140 20 81 95 98 52 9 76 19 K712XOh7B . . . 158 18 83 99 96 52 1 4 76 20 Kyl26XOh7B . . 152 20 85 95 96 50 8 77 21 N82481XOh7B 145 16 84 95 95 48 76 22 C103XOh41 . .. 125 20 78 100 98 42 3 1 77 23 38-11 XOh41 . .. 124 15 85 79 99 50 5 10 75 24 K201XOh41 . . . 141 21 79 95 92 55 1 3 76 25 K712XOh41 .. . 144 22 80 87 95 54 1 4 77 27 N82481XOh41. . 133 17 81 82 100 58 1 6 76 28 Oh7BXOh41 . . . 130 18 79 100 98 44 73 29 C103XCI.21E . . . 122 19 78 94 99 52 4 14 77 30 38-11XCI.21E . .. 128 16 83 89 100 51 26 78 31 K201XCI.21E . . . 144 24 80 96 99 52 4 13 80 32 K712XCI.21E 145 23 81 95 99 49 27 78 33 Kyl26XCI.21E. . . . . . . 107 24 80 97 99 54 27 80 34 N82481XCI.21E.... . .. 137 19 82 85 100 53 4 79 35 Oh7BXCI.21E . . . 152 18 81 98 100 49 1 1 77 36 Oh41XCI.21E . .. 132 22 79 96 98 48 1 1 78 Average . . . 138 19 82 93 97 51 2 8 77 B Double crosses 37 111. 1849 . . . 149 19 80 88 100 54 1 5 76 46 111. 1893 . . . 145 16 80 92 96 50 8 74 41 111. 1856 . . . 144 18 83 94 98 51 3 10 75 39 111. 1851 . .. 141 17 81 92 99 52 3 8 76 45 111. 1889 . .. 141 15 81 95 98 48 10 71 4? 111. 1857. . 137 19 81 87 99 52 5 77 38 111. 1850 . .. 135 18 83 91 98 56 8 76 76 GCP6220 . . . 134 16 84 96 100 50 2 14 76 40 111. 1852 . . . 134 15 84 85 100 52 1 10 76 48 111. 1918 ... 131 16 85 90 99 46 1 6 72 47 111. 1913. . 130 13 87 95 99 45 8 70 43 111. 1859 . . . 129 17 82 95 95 50 11 76 49 111. 1919 . . . 128 15 83 93 92 42 5 74 44 111. 1880 . . . 123 14 85 96 98 46 1 72 Average ... 136 16 83 92 98 50 1 8 74 24 BULLETIN No. 606 [January, Table 10. DOUBLE CROSSES OF ILLINOIS 448 MATURITY Tested in South-Central Illinois, 1952-1956 (Data in boldface were not statistically different from the best performance for that characteristic) Rank A A Entry * 55 Mois- ture in grain Shell- ing Erect plants Stand hS r ht D ss ed s n t A Five-year averages, 1952-1956 bu. perct. Perot. perct. perct. in. perct. perct. 1 111. 1851 69 17 79 72 99 48 2 111. 1656 68 16 82 74 100 44 3 111. 1859 68 16 80 71 99 46 4 111. 1570 67 16 80 69 99 43 5 111. 1856 67 18 80 70 99 47 6 111. 1857 67 19 78 71 99 48 7 111. 1332 66 16 81 78 99 44 8 111. 1349 66 17 81 75 99 49 9 AES805 65 16 80 78 99 43 10 111. 1657 65 20 80 62 98 47 11 111. 1849 65 20 77 82 98 46 12 U.S. 13 65 15 81 68 98 46 13 111. 1539A 64 18 79 74 100 47 14 111. 1852 64 18 77 73 99 47 15 111. 1771 62 19 77 79 97 46 16 111. 1850 62 19 77 78 99 47 17 111.200 60 17 78 64 99 49 18 Mo. 804 57 18 77 70 99 51 Average. . . . 65 18 79 73 99 47 B Four-year averages, 1953-1956 i 111. 1851 64 17 80 68 99 48 2 111. 1859 64 16 80 68 99 46 3 111. 1570 63 15 80 63 99 44 4 111. 1656 63 16 81 70 100 46 5 111. 1332 62 16 80 76 98 44 6 111. 1857. . 62 18 78 66 99 48 7 111. 2246W 62 15 80 70 99 45 8 AES 805 61 15 80 74 99 44 9 111. 1349 61 17 81 70 99 49 10 111. 1856 61 18 80 68 98 47 11 111. 1893. . 61 17 78 78 99 47 12 111. 1852 60 18 77 69 99 48 13 U.S. 13 60 15 81 63 98 46 14 111. 1539A 59 18 79 68 100 47 15 111. 1657 59 20 80 58 98 48 16 111. 1849. . 59 19 78 80 98 46 17 111.200 56 17 78 61 99 50 18 111. 1771 56 19 77 75 96 46 19 111. 1850 56 19 78 74 99 48 20 Mo. 804 52 18 76 66 99 52 Average .... 60 17 79 69 99 47 (Table is continued on next page) 7957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 25 Table 10. Continued Rank . Mois- in Entry * ture in yield ^^^ grain Shell- Erect ing plants Stand Ear height D-PPed Smut C Three-year averages, 1954-1956 bu. perct. Perct. perct. perct. in. perct. perct. i 111. 1851. . 70 17 80 58 99 45 2 111. 1349 68 17 81 64 99 48 2 3 111. 1657 68 20 81 47 98 47 4 111. 1856 68 17 81 59 98 46 1 5 111. 1857 68 18 79 58 99 46 2 6 AES 904W. . . 68 19 80 58 100 49 7 111. 1893 68 16 78 71 100 46 1 8 111. 1539A 67 18 80 59 100 45 1 9 111. 1656 67 16 81 60 100 44 10 111. 1849 67 19 81 73 98 46 3 11 111. 1852 . . 67 17 79 61 98 46 12 111. 1859 67 16 80 59 99 44 1 13 AES 805 66 16 80 66 98 43 14 111. 1332 66 16 80 68 99 43 15 III. 1570 66 16 80 52 99 43 2 16 111. 1909. . 66 15 81 60 99 44 17 111. 1918 66 16 80 65 100 43 18 111. 1850 65 18 80 67 100 48 19 111. 1913 65 14 81 54 100 42 20 AES903W 64 17 75 58 100 42 21 111. 1771. . 64 18 80 67 96 44 1 22 111. 2246W 64 15 80 60 99 44 3 23 111. 1919 63 15 79 66 98 41 24 U.S. 13 62 15 80 53 98 45 25 111. 200 61 17 79 50 99 49 26 Mo. 804 61 17 78 57 100 49 Average. . . . 66 17 80 60 99 45 1 D Two-year averages, 1955-1956 1 111. 1349. . 79 18 83 55 98 56 2 2 111. 1851 79 18 80 61 98 52 3 AES904W 79 19 81 60 100 58 4 111. 1657 78 21 80 52 98 54 5 111. 1849 78 20 81 68 98 53 2 6 111. 1852. . 78 18 80 60 98 53 7 111. 1856 78 18 80 60 98 53 1 8 111. 1893 78 17 80 70 100 54 2 9 111. 1539A 77 18 80 56 100 54 2 10 AES 805 76 16 81 62 98 51 11 111. 1656. . 76 16 82 60 100 52 12 111. 1857 76 19 78 52 99 53 1 13 111. 1859 76 17 80 60 98 50 1 14 111. 1909 76 15 82 64 98 51 1 15 111. 1913 76 14 82 60 100 50 1 16 111. 1918. . 76 17 80 71 100 50 1 17 AES 903W 75 18 76 54 100 50 18 111. 1850 75 20 81 64 100 56 2 19 111. 1332 74 16 79 71 98 51 20 111. 1570 74 17 80 56 98 51 2 21 111. 2246W. . 73 16 81 57 98 51 2 22 111. 1771 72 19 80 63 98 52 1 23 111. 1919 72 15 80 68 98 48 24 U.S. 523W 72 18 78 48 98 52 25 111. 200 70 18 80 52 99 58 26 U.S. 13 70 16 80 56 96 52 27 Mo. 804 68 18 78 56 100 56 Average .... 75 17 80 60 99 52 1 (Table is concluded on next page) 26 BULLETIN No. 606 [January, Table 10. Concluded Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Draped Smut E 1956 results (4 replications) bu. perct. perct. perct. perct. in. perct. perct. i AES 904W. . . 95 16 82 99 100 59 5 ?. 111. 1539A 93 17 81 92 99 54 1 1 3 111. 1349 91 17 84 87 98 60 2 2 4 111. 1849 91 18 81 96 99 56 2 I 5 111. 1851 90 16 81 93 99 56 1 6 111. 1656.. 89 14 84 89 100 57 1 7 111. 1657 89 18 81 88 98 59 1 8 111. 1850 89 16 82 93 100 60 1 2 9 111. 1893 89 16 79 98 100 55 1 10 AES 805 88 15 82 88 97 55 11 AES 903 W. . . 88 17 78 97 100 53 1 12 111. 1852 88 15 82 92 96 56 1 1 13 111. 1857 88 17 79 76 100 55 4 14 111. 1859 88 16 81 86 100 51 1 3 15 111. 1913 88 13 85 98 99 54 2 16 111. 1918. . 88 15 82 90 99 50 1 17 111. 1935 88 14 82 99 99 51 18 111. 1332 87 15 80 99 99 56 19 Mo. 804 87 16 81 94 100 61 2 20 111. 1771 86 17 80 94 98 55 2 21 111. 1856. . 86 16 81 92 95 57 2 4 22 111. 1909 86 14 82 89 99 54 1 23 111. 1945 85 14 82 95 99 60 1 2 24 111. 1948 85 16 81 99 98 50 1 3 25 111. 1570 84 15 82 88 99 54 1 26 111. 1889. . 84 15 81 94 98 52 1 4 27 111. 1926 84 14 80 97 100 53 1 28 111. 1919 83 14 80 93 99 48 3 29 111. 200 82 15 81 88 99 61 1 30 111. 1922 82 16 80 100 99 50 1 31 U.S. 523W . . 82 16 79 87 96 55 2 32 111. 1928 81 15 80 98 100 50 2 2 33 111. 2246W 81 14 83 97 98 52 2 34 Mo. 916 81 17 77 99 100 56 5 35 111. 1921 79 16 83 97 97 48 1 36 111. 1949. . 79 16 80 100 100 52 37 U.S. 13 79 14 81 89 96 54 38 111. 1927 78 16 78 99 97 53 39 111. 1944 78 16 77 97 100 56 4 40 111. 1942 77 17 80 98 100 55 3 41 111. 1940. . 76 17 79 99 99 54 42 111. 1943 76 16 79 97 100 50 1 43 111. 1946 75 15 79 100 100 59 1 44 111. 1947 75 15 78 99 100 55 45 111. 1951 75 14 82 97 92 57 46 111. 1938 . . 74 17 77 99 100 52 3 47 111. 1939 74 18 79 98 100 51 1 48 111. 1941 74 16 81 100 98 52 1 49 111. 1950 68 15 80 100 94 51 1 Average 83 16 81 95 99 54 1 1 1957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 27 Table 11. SINGLE AND DOUBLE CROSSES OF U.S. 13 MATURITY Tested in South-Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield grain Shell- Erect ing plants Stand Ear height Dropped Smu( . ears A Single crosses bu. perct. perct. perct. perct. in. Perct. perct. i C103X38-11. . 84 15 80 98 99 58 2 2 C103XK201 97 20 78 93 96 54 3 C103XK712 87 16 83 98 92 54 2 4 38-11 XK201 75 19 82 83 99 51 5 38-11 XK712 64 18 83 100 99 55 23 6 K201XK712. . 105 21 81 97 99 58 7 C103XKyl26 91 17 82 100 99 54 3 8 38-11 XKyl26 71 18 81 98 99 56 9 K201XKyl26 70 19 81 95 78 54 2 10 K712XK126 112 21 82 100 99 56 5 11 C103XN82481 ... 86 17 78 97 97 54 12 38-11 XN82481 78 16 82 91 96 58 2 13 K201XN82481 82 19 82 69 97 55 14 K712XN82481 95 19 83 86 97 60 2 2 15 Kyl26XN82481 75 19 83 92 96 56 2 16 Cl03XOh7B ... 94 17 77 100 97 56 2 17 38-llXOh7B 82 16 81 98 99 58 7 18 K201XOh7B 99 18 80 97 97 54 19 K712XOh7B 85 17 84 100 94 58 2 20 Kyl26XOh7B 69 16 81 100 99 55 21 N82481XOh7B... 90 17 82 100 99 54 22 Cl03XOh41 62 19 75 93 99 42 23 38-11 XOh41 71 15 79 98 99 48 7 24 K201XOh41 86 19 79 83 99 54 25 K712XOh41 95 18 81 100 99 57 27 N82481XOh41. . 85 18 78 90 99 53 2 28 Oh7BXOh41 77 17 78 97 99 54 29 C103XCI.21E 100 19 80 98 99 58 3 30 38-11XCI.21E 75 15 83 95 99 60 5 31 K201XCI.21E 94 20 79 72 94 54 2 32 K712XCI.21E... 89 23 80 100 97 53 5 33 Kyl26XCI.21E 74 19 80 100 99 58 7 34 N82481XCI.21E 83 18 83 90 94 59 2 35 Oh7BXCI.21E 84 17 81 97 99 52 2 36 Oh41XCI.21E 86 19 78 91 97 52 2 Average 84 18 81 94 97 55 2 B Double crosses 44 111. 1880. . 96 15 83 90 99 52 42 111. 1857 92 19 79 90 97 56 7 26 GCP 6220 88 17 83 98 99 55 3 45 111. 1889 87 15 82 95 99 56 2 2 41 111. 1856 85 18 83 97 91 57 3 47 111. 1913. . 85 14 83 100 99 54 2 46 111. 1893 84 17 77 100 99 52 5 37 111. 1849 82 20 79 87 99 52 39 111. 1851 79 17 81 98 94 56 40 111. 1852 79 16 82 98 97 53 38 111. 1850. . 73 18 82 91 96 59 2 48 111. 1918 73 15 82 92 97 49 43 111. 1859 71 17 79 97 99 54 2 49 III. 1919 68 14 81 100 99 48 Average 82 17 81 95 97 54 2 28 BULLETIN No. 606 [January, Table 12. TOP AND DOUBLE CROSSES OF ILLINOIS 448 MATURITY Tested in South-Central Illinois, 1956 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry yield Mois- ture in grain Shell- ing Erect plants ;tanH Ear Dropped c btand height ears A Inbred lines crossed with (Mo . 804) bu. perct. perct. perct. perct. in. perct. perct. i CI.34... 78 17 80 98 98 62 1 2 CI.35 92 22 78 94 97 63 3 Kyl26 78 18 79 97 98 61 2 4 K758 82 19 80 97 98 49 1 5 K759 84 19 79 97 97 60 6 K762 . . . 84 18 81 91 99 59 1 7 K763 83 17 79 94 99 58 2 8 K764 76 17 81 92 98 51 9 K720 87 17 81 100 97 54 4 10 K713 81 19 81 92 97 63 4 11 K765... 90 20 77 93 98 63 12 K766 91 20 79 88 98 58 1 13 K767 80 19 78 91 97 56 5 14 K770 78 18 79 99 97 48 1 15 K771 83 19 77 97 98 60 16 K711.. 90 18 80 96 98 56 17 Mo9108 77 18 77 90 97 66 5 18 Mo0225 83 21 79 98 98 60 1 19 Mo9662 79 18 81 94 99 56 20 Mo9689 102 18 82 98 99 62 2 21 Mo9635... 87 17 79 89 97 64 22 N15 93 20 81 69 97 54 1 23 Oh7B 87 17 81 96 97 59 1 24 Okll 84 18 81 78 99 48 3 Average . 85 18 80 93 98 58 1 B Inbred lines crossed with (AES 903W) 26 K647-53 . . 81 19 77 97 95 48 27 K691-53 88 22 76 90 93 55 2 28 K859-52 85 19 78 96 92 50 29 K661-53 73 20 73 100 99 S? 3 30 K669-53 76 21 74 100 98 49 3 31 K503-52 . . 86 17 78 98 97 6? 2 32 K689-53 94 18 78 92 99 57 5 33 K690-53 85 19 75 98 98 54 1 34 K3 64-50 92 19 80 94 96 6? 3 35 K709-53 97 22 77 97 97 59 1 36 K722-53 . . 97 19 79 96 97 56 4 37 K242-51 96 18 82 91 93 57 3 38 K519-52 84 20 79 97 97 46 1 39 K788-53 79 16 75 100 97 56 40 Mol2021 82 18 81 91 97 54 3 Average . 86 19 77 96 96 54 2 C Double crosses 41 AES903W... 89 20 77 96 97 55 1 44 111. 1919 89 16 82 97 98 49 1 42 111. 2235W. . . 88 17 80 98 99 57 43 111. 1918 85 16 81 94 97 5? 1 25 Mo. 804 81 17 79 97 98 62 2 Average . 86 17 80 96 98 55 1 7957] EXPERIMENTAL CORN HYBRIDS: 1956 TESTS 29 Table 13. AVERAGE PERFORMANCE OF INBRED LINES AS MEASURED IN SINGLE CROSSES* (Comparisons can be made only within each section) Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect Stand Ear Dropped c .. plants ^ d height ears Half- silk A 111. 1277 maturity (summarized from Table 3) 1 2 3 4 5 6 7 8 9 10 Oh43 . . bu. 126 perct. 18 18 17 17 18 16 17 18 17 20 18 perct. 81 81 80 78 78 81 82 81 80 75 80 Perct. perct. 99 99 92 99 97 98 96 97 99 98 96 99 94 98 98 98 98 97 99 96 97 98 in. perct. 40 44 47 41 44 47 46 1 39 44 47 44 perct. 1 1 1 1 1 2 1 days N24 -. . . 126 WF9 123 Oh28 122 B37 121 A545 121 A297 119 M14 . 114 B14 113 B38 109 Average . 119 B U.S. 13 maturity (summarized from Table 8) 1 2 3 4 5 6 7 8 9 10 R154. . . 140 15 16 18 18 16 16 17 16 15 18 16 86 85 83 84 82 84 85 84 84 81 84 86 86 85 91 75 86 83 92 88 88 86 98 98 99 98 99 98 98 98 99 98 98 55 52 54 54 58 50 57 49 56 61 55 2 2 1 1 2 1 1 2 3 2 8 1 3 5 5 2 10 4 7 5 5 68 68 70 71 73 68 72 68 70 73 70 R151 139 R153 138 R105 137 CI.38B . 137 WF9 . . 137 CI.42A 136 R101 135 R130 133 CI.317B. . . 132 Average . 136 c U.S. 13 maturity (summarized from Table 9) 1 2 3 4 5 6 7 8 9 Oh7B... 145 17 21 21 18 20 15 21 19 18 19 82 83 80 82 82 85 80 80 81 82 97 94 93 89 94 89 94 91 95 93 98 98 97 97 96 99 99 97 96 97 49 53 54 54 52 51 51 50 50 52 i 2 1 2 4 1 2 3 2 5 10 8 4 12 14 14 4 6 9 76 78 78 77 77 76 78 76 76 77 Kyl26 143 K201 143 N82481. 141 K712 135 38-11.. . 134 CI.21E 133 Oh41 133 C103 132 Average 138 D 111. 448 maturity (summarized from Table ID 1 2 3 4 5 6 7 8 9 K712.. . 92 19 19 18 19 17 18 18 18 16 18 82 80 79 80 80 81 78 81 81 80 98 86 97 93 99 89 93 98 95 94 97 95 97 97 98 97 99 96 99 97 56 54 54 56 55 56 51 56 56 55 5 2 3 1 1 2 3 6 3 K201 88 C103 88 CI.21E 86 Oh7B 85 N82481. . , 84 Oh41 80 Kyl26 80 38-11. 75 Average . 84 Calculated for each inbred by averaging the performance of single crosses in which it was one of the parents. Table 14. DOUBLE-CROSS HYBRID NUMBERS, PEDIGREES, AND INDEX TO TABLES Hybrid Pedigree Table No. Illinois hybrids 21 (Hy2X187-2)(WF9X38-ll) 2ABCDE, 4ABCDE, 6ABCDE 101 (M14XWF9)(187-2XW26) 2ABCDE 200 (WF9X38-11)(L317XK4) 10ABCDE 274-1 (Hy2XWF9)(Oh7X 187-2) 4ABCDE, 6ABCDE 972A-1 (Hy2XL317)(WF9XOh7) 4ABCDE, 6ABCDE 1091A (Hy2Xl87-2)(M14XWF9) 2ABCDE 1277 (M14XWF9)(I.205X 187-2) 2ABCDE, 3B, 4ABCDE 1279 (M14XWF9)(A375X 187-2) 2ABCDE 1280 (M 14 XWF9)(Os420X 187-2) 2ABCDE, 3B, 4ABCDE 1281 (M14XWF9)(A374XA375) 2ABCDE 1289 (M14XW22)(WF9XI.205) 2ABCDE 1332 (Hy2XOh7)(WF9X38-ll) 4ABCDE, 5, 6ABCDE, 8B, 10ABCDE 1349 (38-11 XMo940)(K15SXK201) 10ABCDE 1375 (M14XWF9)(N6XOh51A) 2ABCDE 1421 (Hy2XWF9)(P8XOh7) 6ABCDE 1493 (WF9Xl.205)(Oh28XW22) 2ABCDE 1511 (Hy2XWF9)(38-llXL304A) 4ABCDE, 6ABCDE 1539A (38-11 XCI.7)(K201 XCI.21E) 10ABCDE 1555A (WF9XOh51A)(I.224XOh28) 2ABCDE, 4ABCDE 1557 (M14XOh28)(I.205XOh51A) 2ABCDE 1559B (M14XOh28)(WF9XOh51A) 2ABCDE 1560A (WF9XOh51A)(I.205XOh28) 2ABCDE.4ABCDE 1570 (Hy2XOh41)(WF9X38-ll)....4ABCDE, 5, 6ABCDE, 8B, 10ABCDE 1570A (Hy2XWF9)(38-ll XOH41) 5 1570-1 (HyRXOh41)(WF9TMSX38-ll) 5 1575 (M14X WF9)(L12 XOH28) 2ABCDE, 4ABCDE 1643 (C103X38-ll)(Hy2XOh7A) 5 1656 (C103XHy2)(WF9X38-ll) 6E, 10ABCDE 1657 (K4XOh7)(K201XCI.21E) 10ABCDE 1660 (K4XK201)(Oh7XCI.21E) 5 1760 (WF9X38-ll)(Oh29XOh45) 4ABCDE 1767 (Hy2XOh45)(WF9X38-ll) 6ABCDE 1771 (Oh7BXCI.7)(T8XCI.21E) 10ABCDE 1777 (Hy2XWF9)(R114XR116) 6ABCDE 1788A (WF9XCI.21E)(38-llXOh41) 5 1799 (M14XWF9)(B8XOh51A) 2ABCDE 1813 (C103XOh45)(Hy2XWF9) 6BCDE 1814 (Hy2 X WF9)(M14XOh45) 4ABCDE 1819 (R2XWF9)(R61XOh43) 4ABCDE 1831 (WF9XW146)(K237XOh45) 4ABCDE 1849 (C103X38-11)(K201 XCI.21E) 9B, 10ABCDE, 11B 1850 (C103XCI.21E)(38-11XK201) 9B, 10ABCDE, 11B 1851 (C103X38-ll)(Oh7XCI.21E) 5, 9B, 10ABCDE, 11B 1852 (C103XCI.21E)(38-llXOh7) 9B, 10ABCDE, 11B 1856 (38-11 XOh7)(K201 XCI.21E) 9B, 10ABCDE, 11B 1857 (38-11 XOh41)(K201XCI.21E) 9B, 10ABCDE, 11B 1859 (38-11 XOh7)(Oh41XCI.21E) 9B, 10ABCDE, 11B 1861 (M14XWF9)(I.224XOh28). . 2BCDE 1862 (M14XWF9)(Oh43XOh51A) 2BCDE 1863 (M14XWF9)(I.205XOh43) 2BCDE, 4BCDE 1864 (M14XWF9)(Oh43XW22) 2BCDE 1866 (M14X WF9)(Oh26AXOh45) 2BCDE 1868 (C103XOh43)(Hy2XWF9) 4BCDE 1873 (C103XM14)(R75XOh43) 4BCDE 1875 (C103X38-ll)(Hy2XWF9) 4BCDE 1880 (R103XR104)(WF9X38-11) 5, 6BCDE, 9B, 11B 1889 (C103XOh45)(38-ll XOH29) 6BCDE, 9B, 10E, 11B 1890 (C103XOh45)(R75X38-ll) 6BCDE 1893 (C103X38-ll)(Oh7BXOh29) 6E, 9B, 10BCDE, 11B (Table is continued on next page) Table 14. Continued Hybrid Pedigree Table No. Illinois hybrids (continued) 1902 (R138XR142)(R139XR141) 2E, 4E, 6E 1909 (R130XR151)(WF9X38-11) 6CDE, 10CDE 1912 (R151 XR156)(WF9X38-11) 4CDE, 6CDE 1913 (R151XR1S4)(WF9X38-11) 4CDE, 5, 6CDE, 7D, 9B, 10CDE, 11B 1916 (R130XR154)(WF9X38-11) 4CDE, 6CDE 1917 (R153XR154)(WF9X38-11) 4CDE 1918 (R151XR153)(WF9X38-11). ...5, 6CDE, 7D, 9B, 10CDE, 11B, 12C 1919 (R130XR156)(WF9X38-11) 4CDE, 5, 6CDE, 7D, 9B, 10CDE, 11B, 12C 1921 (R71XR105XVVF9X38-11) 4E, 6E, 10E 1922 (Hy2XWF9)(R7lXR105) 4E, 6E, 10E 1926 (R71AXR74XR75X38-11) 4E, 6E, 10E 1927 (Hy2XWF9)(R71AXR74) 4E, 6E, 10E 1928 (R75X38-11XR98XR105) 4E, 6E, 10E 1930 (Hy2XWF9)(R98XR105) 4E 1935 (C103XR101XR75X38-11) 6E, 10E 1936 (Hy2XWF9)(M14XB14) 2DE, 4E 1938 (R71XR105XR98XR153) 5, 10E 1939 (R71XR98)(R105XR153) 5, 10E 1940 (R71XR153XR98XR105) 5, 10E 1941 (R98XR105XR130XR153) 5, 10E 1942 (R98XR153)(R105XR130) 5, 10E 1943 (R71XR105XR153XR154) 5, 10E 1944 (R71XR98XR130XR153) 5, 10E 1945 (R98XR151XR105XR130) 5, 10E 1946 (R98XR155XR105XR130) 5, 10E 1947 (R105XR130XR153XR155) 5, 10E 1948 (R105XR151XR153XR154) 5, 8B, 10E 1949 (R71XR105XR151XR153) 5, 10E 1950 (R71 XR105)(R153 XR155) 5, 10E 1951 (R71 XR130XR98XR155) 5, 10E 1952 (M14XB14XA545XW64A) 2E 1953 (M14XA223XB14XW64A) 2E 1954 (M14XA297XB14XA545) 2E 1955 (M14X A297)(B14X W64A) 2E 1956 (M 14X A545XB14 X A239) 2E 1957 (M14XA545XB14XW64A) 2E 1958 (M14XOh26A)(B14XA545) 2E 1959 (M14XW64AXB14XA297) 2E 1960 (M14XW64AXB14XA545) 2E 1961 (B14XA545XA239XW64A) 2E 1962 (B14XA545XA297XW64A) 2E 1963 (B14XA545)(Oh26AXW64A) 2E 1964 (R138XR143XR140XWF9) 6E 1965 (R140XWF9XR142XR143) 6E 1966 (R163XR165)(WF9XB14) 3B, 4E 1967 (R163XR168XWF9XB14) 3B, 4E 1968 (R163XR169)(WF9XB14) 3B, 4E 1969 (R165 XR168)(WF9 XB14) 3B, 4E 1970 (R165XR169)(WF9XB14) 3B, 4E 1971 (R168XR169XWF9XB14) 3B, 4E 1972 (R163 X R165XR168 X R169) 4E, 6E 1973 (R163XR168XR165XR169) 4E, 6E 1974 (R163XR169XR165XR168) 6E 1975 (WF9XCI.38BXCI.42AXCI.317B) 6E 1976 (38-llXOh41)(Oh7XCI.21E) 5 1977 (WF9X38-ll)(Oh29XOh41) 5 1978 (C103X38-ll)(WF9XOh7A) 5 1979 (C103XB10XWF9X38-11) 5 1980 (C103XB14XWF9X38-11) 5 1981 (WF9X38-ll)(Oh7XCI.21E) 5 (Table is concluded on next page) Table 14. Concluded Hybrid Pedigree Table No. Illinois hybrids (concluded) 1982 (C103X38-11)(WF9XCI.21E) 5 1983 (Hy2XB14)(WF9X38-ll) 5 1984 (Hy2 X WF9)(Oh29 XOH41) 5 1985 (Hy2XWF9)(R61XOh41) 5 1986 (Hy2XWF9)(Oh43X 187-2) 5 1987 (C103XB10)(Hy2XWF9) 5 1988 (C103 X R61)(Hy2 X WF9) 5 1989 (Hy2 X WF9)(M14XOh29) 5 1990 (Hy2XWF9)(M14XOh43) 5 1991 (C103 XB10)(WF9XOh7A) 5 1992 (C103XB14)(WF9XOh7A) 5 1993 (WF9XOh41)(B10XB14) 5 1994 (C103XWF9)(Oh29XOh41) 5 1995 (Hy2XOh7)(38-llXOh41) 5 1996 (C103XB14)(Hy2XOh7) 5 1997 (C103XOh41)(Hy2XOh7) 5 1998 (M 14 X 187-2) (WF9XB6) 3B 1999 (C103XOh43)(M14XWF9) 3B 3000 (C103XM14)(WF9XOh51A) 3B 2235W (H21XK64) (33-16 XMo2RF). 12C 2246W (R144XR145)(R148XR149) 5, 10BCDE 2247W (R144XR145)(R146XR148) 2CDE, 4BCDE Miscellaneous hybrids AES 510 (WF9XW22)(H19XB9) 2CDE AES 512 (M14XWF9)(B9XW22) 2DE AES 610 (M14XA73)(Oh43XOh51A 2ABCDE AES 702 (111. 1790). .(C103XM14)(Hy2XWF9) 2ABCDE, 4ABCDE, 6E AES 801 (WF9XB7)(B10XB14) 6ABCDE AES 802 (HyXWF9)(38-llXN6) 6ABCDE AES 803 (WF9X 187-2) (N6XK148) 6ABCDE AES 805 (111. 1770). .(C103XOh45)(WF9X38-ll) 4ABCDE, 6ABCDE, 10ABCDE AES 806 (HyXWF9)(N6XN15) 4CDE, 6CDE AES 807W (H26XH27)(H28XH29) 6DE AES 808 (WF9X38-ll)(H14XOh43) 6E AES 903W (H28XK55)(H30XK41) 10CDE, 12C AES 904W (K64XMo22)(Tlll XT115) 10CDE GCP 6220 (WF9X38-11)(O-1265XGT107) 9B, 11B Ind. 4655 (C103XOh43)(P8XWF9) 6E Ind. 4656 (P8XWF9)(H14XOh43) 6E Ind. 5409 (M14XB14)(WF9XW22) 2E Ind. 5655 (WF9X38-llR)(Oh7BXOh45) 6E Iowa 4297 (M14X187-2)(WF9XI.205) 4ABCDE Iowa 4757 (M14XWF9)(B16XOh51A) 2E Iowa 4779 (M14XWF9)(Oh43XOh51A) 2E Iowa 4809 (M14XWF9)(B14XB37) 4E Iowa 4879 (WF9XOh43)(B14XB37) 4E Iowa 4903 (WF9XB7)(B14XB38) 6E Iowa 4912 (HyXOh41)(WF9XB14) 6E ISP 2 (C103XOh45)(M14XWF9) 2ABCDE Mich. 52-25 (M14XWF9)(MS212XOh51A) 2E Mich. 53-151 (WF9XMS209)(MS106XMS107) 2E Minn. CB4603 (B14XA297)(A295XW64A) 2E Minn. CB4621 (B14XA239)(A295XW64A) 2E Mo. 804 (38-11 XCI.21E)(K4XCI.7) 10ABCDE, 12C Mo. 916 (Mo9108XCI.21E)(Oh7BXOh29) 10E Mo. 4060AW (H30XK41)(Mo9187WXN72) 6E Nebr. 1924B (HyXWF9)(B14XN6) 4E Ohio K24 (WF9XOh51A)(Oh33 XOh40B) 2ABCDE Ohio 5317 (WF9XB14)(Oh28XOh43) 4E U.S. 13 (HyXL317)(WF9X38-ll) 6ABCDE, 7D, 10ABCDE U.S. 523W (K55XK64)(Ky27XKy49) 10DE 5M 1-57 61892