I E> RAR.Y 
 
 OF THL 
 
 U N I VERS ITY 
 Of ILLINOIS 
 
 <o3O.~7 
 
 cop. "2 
 
 ABHICULTUBE 
 
NOTICE: Return or renew all Library Materials! The Minimum Fee for 
 each Lost Book is $50.00. 
 
 The person charging this material is responsible for 
 its return to the library from which it was withdrawn 
 on or before the Latest Date stamped below. 
 
 Theft, mutilation, and underlining of books are reasons for discipli- 
 nary action and may result in dismissal from the University. 
 To renew call Telephone Center, 333-8400 
 
 UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN 
 
 OCT1 
 
 V V i 
 
 41994 
 
 L161 0-1096 
 
Experimental 
 CORN HYBRIDS 
 TESTED IN 1949 
 
 By R. W. Jugenheimer 
 L. F. Bauman 
 D. E. Alexander 
 
 C. M . Woodworth 
 
 Bulletin 538 - UNIVERSITY OF ILLINOIS 
 AGRICULTURAL EXPERIMENT STATION 
 
Location of 
 
 194 9 test 
 
 fields 
 
 CONTENTS 
 
 PAGE 
 
 MEASURING PERFORMANCE 527 
 
 MATERIAL TESTED 528 
 
 Hybrid Designations and Pedigrees (Table 2) 530 
 
 RESULTS OF TESTS 535 
 
 Ohio K24 Maturity: Northern Illinois (Table 3) .536 
 
 Iowa 4059 Maturity: Northern and North-Central Illinois 
 
 (Tables 4 and 5) 537 
 
 U.S. 13 Maturity: North-Central, Central, and South-Central 
 
 Illinois (Tables 6 and 7) 539 
 
 Illinois 448 Maturity: South-Central and Southern Illinois 
 
 (Tables 8 and 9) 542 
 
 Acknowledgment is due the following persons for their collaboration in these tests- 
 D. FORD, Geneseo, and ROYAL OAKES, Bluffs, for providing land for some of these 
 BENJAMIN KOEHLER and JOHN H. BIGGER for providing, respectively, the data 
 on premature dying of plants from diseases and on relative corn borer damage 
 
 Urbana, Illinois 
 
 Publications in the Bulletin series report the results of investigations made 
 or sponsored by the Experiment Station 
 
 February, 1950 
 
EXPERIMENTAL CORN HYBRIDS 
 TESTED IN 1949 
 
 By R. W. JUGENHEIMER, L. F. BATTMAN, D. E. ALEXANDER, and C. M. WooowoRTH 1 
 
 THIS REPORT summarizes the results of tests of experimental corn 
 hybrids conducted in 1949 by this Station. Trials were made at five 
 locations : in DeKalb county in northern Illinois, in Henry county in north- 
 central Illinois, in Champaign county in central Illinois, in Scott county in 
 south-central Illinois, and in Fayette county in southern Illinois. These 
 five locations are representative of the soil, rainfall, and length of growing 
 season found in different sections of the state. 
 
 In these tests 275 hybrids were compared for yield, maturity, resistance 
 to lodging, and other agronomic characters. Only hybrids of similar ma- 
 turity were tested on the same field. The name of a familiar hybrid whose 
 maturity was considered the standard for the group is included in each 
 table heading. 
 
 Since the hybrids whose performance is recorded in this bulletin are not 
 yet in commercial use, the information about them is of most value to 
 those producers of hybrid seed who are on the alert for new, improved 
 hybrids for their customers. 
 
 The 1949 performance of hybrids available in commercial quantities to 
 Illinois farmers has been reported in Bulletin 536 of this Station. 
 
 MEASURING PERFORMANCE 
 
 All plots in these tests were planted and thinned by hand in fields 
 prepared in the usual way for corn. Six kernels were planted in hills spaced 
 40 inches apart. Three plants per hill were left at Brownstown and DeKalb; 
 four plants per hill were left in all other tests. Plots at Urbana were 2x8 
 hills in size. Plots at all other locations were 2x5 hills. All entries were 
 replicated and arranged in a randomized block design. 
 
 1 R. W. JUGEXHEIMER and C. M. WOODWORTH, Professors of Plant Genetics; L. F. BAUMAN and 
 D. E. ALEXANDER, Special Research Assistants in Plant Genetics. 
 
 527 
 
528 BULLETIN No. 538 [February, 
 
 Data from all plots are included in the results. The only correction for 
 imperfect stands was the following adjustment for missing hills: 
 
 /Number of hills^ /0.3 X Number of missing 
 
 \hi 
 
 Corrected = Field Vperplot ) V hills per plot 
 
 weight weight 
 
 /Number of hills\ /Number of missing\ 
 
 \ per plot / \hillsperplot / 
 
 This adjustment adds 0.7 of the average hill yield for each missing hill, and 
 assumes that 0.3 is made up by the increased yield of surrounding hills. 
 
 Double-cross 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. To determine the shelling percent- 
 age, the corn from one replication of each entry at each location was shelled. 
 Percentage of moisture in the shelled grain was obtained with a Steinlite 
 moisture meter. 
 
 Erect plants at harvest, stand, smutted plants, dropped ears, and pre- 
 maturely dead plants were determined from actual counts on all replica- 
 tions of each test for which such data are presented. Plant and ear heights 
 are recorded in feet and inches respectively. Corn borer damage was scored 
 in five classes: Score 1 was least injured by the corn borer and Score 5 was 
 most injured. 
 
 General information concerning the tests is given in Table 1, including 
 dates of planting and harvesting, and other general data. 
 
 MATERIAL TESTED 
 
 One hundred forty-five different double crosses, 127 three-way crosses, 
 and three miscellaneous crosses were grown on the five test fields. The 
 Illinois hybrids were developed by members of the Plant Breeding division 
 of the University of Illinois Agronomy Department. 
 
 The University does not produce hybrid seed corn in commercial quan- 
 tities. If a hybrid gives satisfactory performance, the parental lines are 
 released for use by seedsmen. Hybrids that include new inbred lines are 
 produced under the "delayed release" program adopted by most of the states 
 in the corn belt. Delayed release enables the Experiment Station to control 
 the use of the new line during the early years of its commercial utilization. 
 The multiplication of a new line and the production of single crosses is 
 handled by the Station or by some designated agency. After a satisfactory 
 probationary period of two to five years, a new line is released to the public. 
 
 Table 2 contains the pedigrees of most of the State Agricultural Experi- 
 ment Station and U.S. hybrids whose performance is shown in this report. 
 
1950] EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 
 
 Table 1. GENERAL INFORMATION: Tests of Illinois 
 Experimental Corn Hybrids, 1949 
 
 529 
 
 Field and 
 section of state 
 
 Size 
 of 
 plots, 
 hills 
 
 Plants 
 hfll 
 
 Date of- Ohio 
 
 Iowa 4059 U.S. 13 111. 
 
 448 
 
 Planting 
 
 w K24 
 
 Ha . r ' D.C." 
 vesting 
 
 D ' C ' wi'yb D -C.' 
 
 w!~y D - C - & 
 
 3- 
 
 way b 
 
 For results see 
 Table No 
 
 Field- 
 DeKalb: N. . 
 
 . 10 
 
 3 
 
 4 
 4 
 4 
 3 
 
 3 
 4 
 4 
 4 
 3 
 
 
 3 
 
 45678 
 Number of entries 
 24 50 
 24 50 47 50 
 47 50 
 47 50 49 
 49 
 
 Number of replications 
 22 
 2222 
 2 2 
 222 
 2 
 
 9 
 
 50 
 50 
 
 '2 
 2 
 
 May 24 
 May 14 
 May 12 
 May 10 
 May 30 
 
 May 24 
 May 14 
 May 12 
 May 10 
 May 30 
 
 Nov. 2 25 
 Oct. 12 
 Nov. 8 
 Oct. 5 
 Nov. 25 
 
 Nov. 2 3 
 Oct. 12 
 Nov. 8 
 Oct. 5 
 Nov. 25 
 
 Henry: NC. . 
 
 10 
 
 Champaign: C. . 
 Scott: SC .... 
 
 . 16 
 10 
 
 Fayette: C 
 
 . 10 
 
 Field 
 
 DeKalb: N 
 
 10 
 
 Henry: NC. . . . 
 
 . 10 
 
 Champaign: C. . 
 Scott: SC .... 
 
 . 16 
 10 
 
 Fayette: C 
 
 . 10 
 
 
 
 Double crosses. b Three-way and double crosses. c The fields are located near the following cities and 
 towns: in DeKalb county near DeKalb, in Henry county near Geneseo, in Champaign county near Urbana, 
 in Scott county near Bluffs, and in Fayette county near Brownstown. 
 
 The pedigrees of the Indiana and Tapicorn hybrids are not available. No 
 significance attaches to the order of the single crosses and the lines within 
 each single cross ; it does not indicate which should be used as seed or pollen 
 parent in the production of a hybrid. 
 
 Illinois yellow hybrids are numbered consecutively below 2000, while 
 white hybrids are numbered in the 2000 series. Illinois white hybrid numbers 
 usually are followed by the letter "W." 
 
 The letter "A" or "B" following an Illinois hybrid number indicates that 
 the combination of inbred lines making up the hybrid has been rearranged 
 or "permuted." For example, if the original pedigree of an Illinois hybrid 
 is (1X2) (3X4), the pedigree of the number followed by the letter "A" 
 means that the hybrid was put together (1X3) (2X4). The pedigree of 
 the number followed by the letter "B" would be (1X4) (2 X3). A differ- 
 ence in reciprocals is not recognized in this method. 
 
 When a short dash (-) followed by a number occurs as a part of an 
 Illinois hybrid number, it means that a tested related line has been substi- 
 tuted for one of the inbred lines included in the original hybrid. For ex- 
 ample, the pedigree of Illinois 972 is (Hy X WF9) (L317 X 701). Illinois 
 972A is (Hy X L317) (WF9 X 701), and Illinois 972B is (Hy X 701) 
 (WF9 X L317). Inbred Oh7, a close relative of 701, was found to produce 
 a better hybrid and therefore was substituted for 701 in Illinois 972. Thus 
 Illinois 972A1 would be (Hy X L317) (WF9 X Oh7). The figure 1 indicates 
 the first substitution of a related line in a hybrid; figure 2, the second 
 substitution, and so on. (Continued on page 534} 
 
530 BULLETIN No. 538 [February, 
 
 Table 2. HYBRID NUMBERS, PEDIGREES AND 
 INDEX TO TABLES 
 
 ,. Performance given 
 H y brld Fedl g ree in Table No. 
 
 Illinois hybrids 
 
 21 (Hy X 187-2) (WF9 X 38-11) 4CD, 5, 6ACD 
 
 101 (M14 X WF9) (187-2 X W26) 3ABC, 5 
 
 200 (WF9 X 38-11) (L317 X K4) *. 8ABCD 
 
 274-1 (Hy X WF9) (Oh7 X 187-2) 6ACD 
 
 751 (A X 90) (Hy X WF9) 3ABC, 5 
 
 972A1 (Hy X L317) (WF9 X Oh7) 6ABCD 
 
 1240 (R2 X 187-2) (M14 X WF9) 4D, 6D 
 
 1246 (R61 X 187-2) (WF9 X 38-11) 6D 
 
 1261 (R2 X R61) (M14 X WF9) 4D 
 
 1277 (M14 X WF9) (1.205 X 187-2) 3ABC, 4ABCD 
 
 1279 (M14 X WF9) (A375 X 187-2) 3ABC 
 
 1280 (M14 X WF9) (Os420 X 187-2) 3ABC, 4ABCD 
 
 1281 (M14 X WF9) (A374 X A375) 3ABC 
 
 1289 (M14 X W22) (WF9 X 1.205) 4ABCD 
 
 1332 (Hy XOh7) (WF9 X 38-11) 6D, 8D 
 
 1337 (Hy2 X R61) (WF9 X 38-11) 6ACD, 8D 
 
 1349 (38-11 X Mo940) (K155 X K201) 8BD 
 
 1375 (M14 X WF9) (N6 X OhSIA) 4BCD 
 
 1417 (Hy2 X WF9) (P8 X N6) 6ACD 
 
 1421 (Hy2 X WF9) (P8 X Oh7) 6ACD 
 
 1422 (Hy2 X WF9) (5120B X Oh7) 6ACD 
 
 1426 (Hy2 X WF9) (38-11 X I.159L1) 6ACD 
 
 1445A (38-11 X K4) ( CI.7 X CI.21E) 8ABD 
 
 1459 (38-11 XK4) ( K201 X CI.21E) 8ABD 
 
 1489 (B9 X W3) (OhSIA X W22) 3C 
 
 1493 (WF9 X 1.205) (Oh28 X W22) 3BC 
 
 1494 (WF9 X Oh51A) (Oh28 X W22) 4CD 
 
 1508 (L7 X L17) (L12 X Oh28) SBC, 4CD, 5 
 
 1509 (Hy2 X WF9) (P8 X L304A) 6CD 
 
 1511 (Hy2 X WF9) (38-11 X L304A) 6CD 
 
 1512 (Hy2 X B2) (WF9 X L304A) 6CD 
 
 1514 (Hy2 X 38-11) (L304A X N6) 6CD 
 
 1515 (Hy X BIO) (WF9 X 38-11) 6CD, 8D 
 
 1518 (P8 X L304A) (WF9 X B2) 6CD 
 
 1521 (38-11 X K201) (T8 X CI.21E) 8BD, 9 
 
 1521B (38-11 XCI.21E) (K201 X T8) 8BD 
 
 1537 (38-11 X K155) (T8 X CI.21E) 8BD 
 
 1539A (38-11 X CI.7) (K201 X CI.21E) 8BD 
 
 1540 (38-11 X CI.21E) (K155 X K201) 8BD 
 
 1541A (38-11 X CI.7) (K155 X CI.21E) 8BD 
 
 1554 (Hy X R59) (WF9 X 38-11) 6CD 
 
 1555A (WF9 X Oh51A) (1.224 X Oh28) 4D 
 
 1556B (M14 X 1.224) (Oh28 X OhSIA) 4D 
 
 1557 (M14 X Oh28) (1.205 X OhSIA) 4D 
 
 1558 (M14 X WF9) (1.205 X Oh28) 4D 
 
 1559B (M14 X Oh28) (WF9 X OhSIA) 4D 
 
 1560A (WF9 X OhSIA) (1.205 X Oh28) 4D 
 
 1563B.. . . (38-11 X K201) (Kys X Ky36-ll) 8D 
 
 (Table is continued on next page) 
 
1950} EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 531 
 
 Table 2. Continued 
 
 ,-, , . Performance given 
 H >' bnd Pedl g ree in Table No. 
 
 Illinois hybrids concluded 
 
 1564B (38-11 X K201) (K4 X Ky36-ll) 8D 
 
 1565 (R40 X 38-11) (B18 X Ky36-ll) 8D 
 
 1566B (R40 X 38-11) (K201 X Ky36-ll) 8D 
 
 1567B (38-11 X Ky36-ll) (K201 X T8) 8D 
 
 1568 (K4 X Ky36-ll) (K155 X K201) 8D 
 
 1570 (Hy2 X Oh41) (WF9 X 38-11) 6D, 7, 8D 
 
 1571 (R61 X 1.205) (L7 X L17) 5 
 
 1572 (R2 XR61) (L7 X L17) 5 
 
 1573 (R2 XM14) (L7 X L17) 5 
 
 1574 (WF9 X 38-11) (L12 X Oh28) 5 
 
 1575 (M14 X WF9) (L12 X Oh28) 5 
 
 1576 (R61 X WF9) (L12 X Oh28) 5 
 
 1577 (R61 X 187-2) (L12 X Oh28) 5 
 
 A Multiple hybrid 4D, 6D, 8D, 9 
 
 2159AW (H21 X Ky27) (K64 X CI.61) 8CD 
 
 2190W (H21 X K6) (K64 X Ky49) 6BCD 
 
 2214W (R30 X Ky27) (H21 X K64) 8CD 
 
 2216W (H21 X CI.61) (K64 X Ky27) 8CD 
 
 2224W (H21 X Ky27) (K6 X CI.61) 8D 
 
 Miscellaneous hybrids 
 
 Ind. 4601 5 
 
 Ind. 4610 5 
 
 Iowa 4297 (M14 X 187-2) (WF9 X 1.205) 5 
 
 Kans. 2275W (33-16 X Ky27) (K55 X K64) 6D, 8CD 
 
 Ohio K24 (WF9 X Oh51A) (Oh33 X Oh40B) 3C 
 
 Ohio L41 (Hy X WF9) (Oh40B X Oh41) 5 
 
 Ohio C54 (Hy X Oh26) (Oh43 X Oh45) 5 
 
 Ohio K62 (Oh26 X Oh51) (Oh43 X Oh45) 3C 
 
 Ohio W64 (WF9 X OhSIA) (Oh43 X Oh45) 3C 
 
 U.S. CB1 (Hy X L304A) (P8 X H10) 6CD 
 
 U.S. CB2 (Hy X L304A) (P8 X Hll) 6D 
 
 U.S. 13 (Hy X L317) (WF9 X 38-11) 4CD, 6ABCD, 7, 8ABCD 
 
 U.S. 505 (WF9 X 38-11) (K155 X T8) 8D 
 
 U.S. 521W (K60 X Ky27) (K64 X Ky49) 6BCD 
 
 U.S. 537W (K55 X K64) (Ky27 X Mo22) 6BCD 
 
 U.S. 541W (R30 X Ky27) (K64 X Mo22) 8CD 
 
 C.B. 7301 (M14 X Ny3) (A206 X OhSIA) 3C 
 
 C.B. 7303 (M14 X OhSIA) (A206 X Ny3) 3C 
 
 C.B. 7304 (M14 X Ny3) (A334 X OhSIA) 3C 
 
 C.B. 7307 (Id50 X OhSIA) (M14 X Ny3) 3C 
 
 C.B. 7308 (Id50 X Ny3) (M14 X OhSIA) 3C 
 
 C.B. 7314 (M14 X OhSIA) (B8 X Ny3) 3C 
 
 C.B. 7318 (M14 X OhSIA) (MS19 X Ny3) 3C 
 
 C.B. 7323 (M14 X OhSIA) (A334 X Ny3) 3C 
 
 C.B. 7327 (M14 X Ny3) (B8 X OhSIA) 3C 
 
 C.B. 7329 (M14 X B8) (Ny3 X OhSIA) 3C 
 
 C.B. 7330 (Id59 X Ny3) (M14 X Oh51A) 3C 
 
 C.B. 7335 (M14 X B8) (A206 X Oh51A) 3C 
 
 (Table is continued on next page) 
 
532 BULLETIN No. 538 [February, 
 
 Table 2. Continued 
 
 _. ,. Performance given 
 Hyb" d Pedl g ree in Table No. 
 
 Miscellaneous hybrids continued 
 
 C.B. 7345 (M14 X R51) (A206 X OhSIA) 3C 
 
 C.B. 7501 (R61 X Oh7A) (38-11 X BIO) 6D 
 
 C.B. 7502 (WF9 X Oh7A) (38-11 X BIO) 6D 
 
 C.B. 7503 (Hy2 X BIO) (H10 X Oh7A) 6D 
 
 C.B. 7504 (WF9 X BIO) (H10 X Oh7A) 6D 
 
 C.B. 7506 (Hy2 X BIO) (WF9 X Oh7A) 6D 
 
 C.B. 7508 (Hy2 X 38-11) (WF9 X Oh7A) 6D 
 
 C.B. 7513 (R61 X WF9) (38-11 X BIO) 6D 
 
 C.B. 7514 (WF9 X BIO) (38-11 X Oh7A) 6D 
 
 C.B. 7519 (Hy2 X Oh7A) (38-11 X BIO) 6D 
 
 C.B. 7520 (Hy2 X WF9) (H10 X 38-11) 6D 
 
 C.B. 7523 (H10 X Oh7A) (38-11 X BIO) 6D 
 
 C.B. 7526 (Hy2 X BIO) (WF9 X H10) 6D 
 
 C.B. 7529 (Hy2 X WF9) (H10 X Oh7A) 6D 
 
 C.B. 7601W (H21 X Ky49) (K64 X Mo2RF) 8D 
 
 C.B. 7603 (38-11 X Ky36-ll) (B18 X K4) 8D 
 
 C.B. 7605 (38-11 X K4) (B18 X K201) 8D 
 
 C.B. 7605W (33-16 X Mo2RF) (H21 X K64) 8D 
 
 C.B. 7606W (R30 X H21) (K64 X Mo2RF) 8D 
 
 C.B. 7609 (38-11 X B18) (K4 X Ky36-ll) 8D 
 
 C.B. 7610 (38-11 XKy36-ll) (B18 X K155) 8D 
 
 C.B. 7610W (H21 X K64) (Ky49 X Mo2RF) 8D 
 
 C.B. 7619W (R30 X H21) (33-16 X Mo2RF) 8D 
 
 C.B. 7624 (38-11 X Ky36-ll) (B18 X T8) 8D 
 
 C.B. 7627W (H21 X Ky27) (K64 X Mo2RF) 8D 
 
 C.B. 7632 (38-11 X B18) (K201 X Ky36-ll) 8D 
 
 C.B. 7633 (38-11 X Ky36-ll) (B18 X K201) 8D 
 
 C.B. 7636 (38-11 X K4) (K201 X T8) 8D 
 
 C.B. 7638W (H21 X K64) (33-16 X Ky49) 8D 
 
 C.B. 7647W (R30 X H21) (Ky27 X Mo2RF) 8D 
 
 C.B. 7648W (H21 X Ky27j (33-16 X Mo2RF) 8D 
 
 C.B. 7655W (R30 X K64) (33-16 X Mo2RF) 8D 
 
 C.B. 7663 (38-11 X K4) (K201 X Ky36-ll) 8D 
 
 C.B. 7664 (38-11 X K155) (K201 X T8) 8D 
 
 N.E. 7701 (Hy2 X OhSIA) (R2 X W22) 4D 
 
 N.E. 7705 (Hy2 X W22) (R2 X 1.205) 4D 
 
 N.E. 7709 (Hy2 X Oh51A) (R2 X 1.205) 4D 
 
 N.E. 7716 (R2 X 1.205) (OhSIA X W22) 4D 
 
 N.E. 7717 (1.205 X OhSIA) (W22 X Pa55) 4D 
 
 N.E. 7721 (Hy2 X W24) (R2 X W22) 4D 
 
 N.E. 7722 (Hy2 X W22) (R2 X OhSIA) 4D 
 
 N.E. 7802 (C102 X C103) (WF9 X BIO) 4D, 6D 
 
 N.E. 7803 (C102 X C103) (Hy2 X WF9) 6D 
 
 N.E. 7805 (C102 X Oh7A) (C103 X Hy2) 6D 
 
 N.E. 7814 (C102 X C103) (WF9 X 38-11) 6D 
 
 N.E. 7815 (C102 X C103) (WF9 X Oh7A) 6D 
 
 N.E. 7826 (C103 X Hy2) (WF9 X Oh7A) 6D 
 
 N.E. 7830 (C102 X BIO) (C103 X WF9) 6D 
 
 Tapicorn 2 5 
 
 Tapicorn 4 5 
 
 (Table is continued on next page) 
 
1950] 
 
 EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 
 Table 2. Continued 
 
 533 
 
 Pedigree 
 
 Performance given 
 in Table No. 
 
 Miscellaneous hybrids continued 
 
 M14 X (WF9 X 1.205) 5 
 
 B32 X (WF9 X 1.205) 5 
 
 B33 X (WF9 X 1.205) 5 
 
 B34 X (WF9 X 1.205) 5 
 
 Nl X (WF9 X 1.205) 5 
 
 N2 X (WF9 X 1.205) 5 
 
 N6 X (WF9 X 1.205) 5 
 
 Oh7B X (WF9 X 1.205) 5 
 
 Oh43 X (WF9 X 1.205) 5 
 
 CI.187-2 X (WF9 X 1.205) 5 
 
 W22 X (WF9 X 1.205) 5 
 
 W64 X (WF9 X 1.205) 5 
 
 W72 X (WF9 X 1.205) 5 
 
 W86 X (WF9 X 1.205) 5 
 
 W112 X (WF9 X 1.205) 5 
 
 W144 X (WF9 X 1.205) 5 
 
 CI.187-2 X (WF9 X 1.205) 5 
 
 B32 X (M14 X CI.187-2) 5 
 
 B33 X (M14 X CI.187-2) 5 
 
 B34 X (M14 X CI.187-2) 5 
 
 Nl X (M14 X CI.187-2) 5 
 
 N2 X (M14 X CI.187-2) 5 
 
 N6 X (M 14 X CI.187-2) 5 
 
 Oh7B X (M14 X CI.187-2) 5 
 
 Oh43 X (M14 X CI.187-2) 5 
 
 W22 X (M14 X CI.187-2) 5 
 
 W64 X (M14 X CI.187-2) 5 
 
 W72 X (M14 X CI.187-2) 5 
 
 W86 X (M14 X CI.187-2) 5 
 
 W112 X (M14 X CI.187-2) 5 
 
 W144 X (M14 X CI.187-2) 5 
 
 WF9 X (M14 X CI.187-2) 5 
 
 1.205 X (M14 X CI.187-2) 5 
 
 C103 X (WF9 X 38-11) 7 
 
 C104 X (WF9 X 38-11) 7 
 
 H12 X (WF9 X 38-11) 7 
 
 H13 X (WF9 X 38-11) 7 
 
 H14 X (WF9 X 38-11) 7 
 
 H15 X (WF9 X 38-11) 7 
 
 H16 X (WF9 X 38-11) 7 
 
 H17 X (WF9 X 38-11) 7 
 
 H18 X (WF9 X 38-11) 7 
 
 T92 X (WF9 X 38-11) 7 
 
 T96 X (WF9 X 38-11) 7 
 
 BIO X (WF9 X 38-11) 7 
 
 Bll X (WF9 X 38-11) 7 
 
 L317 X (WF9 X 38-11) 7 
 
 Hy X (WF9 X 38-11) 7 
 
 Pedigree 
 
 Performance given 
 in Table No. 
 
 Miscellaneous hybrids continued 
 
 K148 X (WF9 X 38-11) 7 
 
 K150 X (WF9 X 38-11) 7 
 
 Mo557 X (WF9 X 38-11) 7 
 
 N3 X (WF9 X 38-11) 7 
 
 Oh4C X (WF9 X 38-11) 7 
 
 Oh7A X (WF9 X 38-11) 7 
 
 Oh29 X (WF9 X 38-11) 7 
 
 Oh45 X (WF9 X 38-11) 7 
 
 W92 X (WF9 X 38-11) 7 
 
 C103 X (Hy X L317) 7 
 
 C104 X (Hy X L317) 7 
 
 WF9 X (Hy X L317) 7 
 
 H12 X (Hy XL317) 7 
 
 H13 X (Hy XL317) 7 
 
 H14 X (Hy XL317) 7 
 
 H15 X (Hy XL317) 7 
 
 H16X (Hy XL317) 7 
 
 H17X (Hy XL317) 7 
 
 H18X (Hy XL317) 7 
 
 38-11 X (Hy X L317) 7 
 
 T92 X (Hy X L317) 7 
 
 T96 X (Hy X L317) 7 
 
 BIO X (Hy X L317) 7 
 
 Bll X (Hy XL317) 7 
 
 K148 X (Hy X L317) 7 
 
 K150 X (Hy X L317) 7 
 
 Mo557 X (Hy X L317) 7 
 
 N3 X (Hy XL317) 7 
 
 Oh4C X (Hy X L317) 7 
 
 Oh7A X (Hy X L317) 7 
 
 Oh29 X (Hy X L317) 7 
 
 Oh45 X (Hy X L317) 7 
 
 W92 X (Hy X L317) 7 
 
 Hy2 X (T8 X CI.21E) 9 
 
 R38 X (T8 X CI.21E) 9 
 
 R62 X (T8 X CI.21E) .9 
 
 R63 X (T8 X CI.21E) 9 
 
 H10 X (T8 X CI.21E) 9 
 
 38-11 X (T8XCI.21E) 9 
 
 Oh29 X (T8 X CI.21E) 9 
 
 L317 X (T8 X CI.21E) 9 
 
 Kys X (T8 X CI.21E) 9 
 
 K4 X (T8 X CI.21E) 9 
 
 K148 X (T8 X CI.21E) 9 
 
 K155 X (T8 XCI.21E) 9 
 
 K166 X (T8 X CI.21E) 9 
 
 K201 X (T8 X CI.21E) 9 
 
 Ky36-ll X (T8 X CI.21E) 9 
 
 (Table is concluded on next page) 
 
534 
 
 BULLETIN No. 538 
 Table 2. Concluded 
 
 [February, 
 
 Pedigree 
 
 Performance given 
 in Table No. 
 
 Miscellaneous hybrids continued 
 
 Mo567 X (T8 X CI.21E) 9 
 
 Mo572 X (T8 X CI.21E) 9 
 
 Mo577 X (T8 X CI.21E) 9 
 
 Oh7B X (T8 X CI.21E) 9 
 
 Oh41 X (T8 XCI.21E) 9 
 
 Ok.12 X (T8 X CI.21E) ' 9 
 
 T202 X (T8 X CI.21E) 9 
 
 CI.7 X (T8 X CI.21E) 9 
 
 Hy2 X (38-11 X K201) 9 
 
 R38 X (38-11 X K201) 9 
 
 R62 X (38-11 X K201) 9 
 
 R63 X (38-11 X K201) 9 
 
 H10 X (38-11 X K201) 9 
 
 Oh29 X (38-11 X K201) 9 
 
 L317 X (38-11 X K201) 9 
 
 Kys X (38-11 X K201) 9 
 
 K4 X (38-11 X K201) 9 
 
 Pedigree 
 
 Performance given 
 in Table No. 
 
 Miscellaneous hybrids concluded 
 
 K148 X (38-11 X K201) 9 
 
 K155 X (38-11 X K201) 9 
 
 K166 X (38-11 X K201) 9 
 
 Ky36-ll X (38-11 X K201) 9 
 
 Mo567 X (38-11 X K201) 9 
 
 Mo572 X (38-11 X K201) 9 
 
 Mo577 X (38-11 X K201) 9 
 
 Oh7B X (38-11 X K201) 9 
 
 Oh41 X (38-11 X K201) 9 
 
 Ok.12 X (38-11 X K201) 9 
 
 T8 X (38-11 X K201) 9 
 
 T202 X (38-11 X K201) 9 
 
 CI.7 X (38-11 X K201) 9 
 
 CI.21E X (38-11 X K201) 9 
 
 38-1 1 X K201 9 
 
 T8XCI.21E... .-9 
 
 (Continued from page 529} 
 
 Three sets of three-way crosses differing in maturity were tested in 
 1949. Seed of the inbred lines involved in these crosses was contributed by 
 the state or federal corn breeder who developed them. The following indi- 
 viduals formed the committees responsible for collecting inbred seed, mak- 
 ing the crosses, and distributing seed of the three-way test crosses to state 
 and federal agencies interested in conducting tests: Iowa 4059 and U.S. 13 
 maturities, J. H. Lonnquist (Nebraska), G. F. Sprague (Iowa), and G. H. 
 Stringfield (Ohio) ; 111. 448 maturity, M. S. Zuber (Missouri) , L. A. Tatum 
 (Kansas), and R. W. Jugenheimer (Illinois). M. T. Jenkins (U.S. Depart- 
 ment of Agriculture) is responsible for summarizing the data from the 
 individual workers, making the predictions, and mimeographing the report. 
 
1950] EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 535 
 
 RESULTS OF THE TESTS 
 
 The data obtained from these tests are summarized in Tables 3 to 9 on 
 the following pages. 
 
 Seedsmen are urged not to give too much consideration to small, or 
 in some cases what may seem to be quite substantial, differences in yields 
 among entries, for it is not possible to determine the relative yielding ability 
 of a hybrid with absolute accuracy. Small differences between entries are 
 seldom of any significance ; and what may seem to be even fairly large dif- 
 ferences may not, in reality, prove significant when subjected to statistical 
 analysis. 
 
 Note, for example, in Table 3 that in the four-year averages one entry 
 must yield 6 bushels more than another before the difference becomes sig- 
 nificant. Of the five entries here only that with the highest yield (92 bush- 
 els) and the one with the lowest yield (86 bushels) show enough difference 
 for the difference to be significant. In Section C of this table, where only 
 one year's results are given, one entry must yield 16 bushels more than 
 another before it can be said that there is a significant difference in yielding 
 ability. 
 
 The fact is that differences in yield are to be expected among plots 
 planted with the same seed. These differences may be due to such things 
 as slight variations in the soil or in stand. While these variations are re- 
 duced by repeating, or "replicating," the planting of the same hybrid several 
 times in the same test, differences will still remain that cannot be said to be 
 due to anything but chance. How much is due to chance is determined by 
 statistical analysis. These differences are called "significant differences" and 
 are shown for each group of data in the following tables. 
 
 Another difficulty in comparing the yielding ability of different hybrids 
 is that they may respond differently to seasonal conditions some, for 
 example, doing better than others in a dry season, or a short season, or 
 a cool season, or under some other handicap, and some doing better than 
 others when conditions are reversed. In 1949 some hybrids performed quite 
 satisfactorily despite corn borer infestation, disease prevalence, and strong 
 winds. Others that had been among the best performers in previous years 
 did very poorly when subjected to these conditions. 
 
 Two-, three-, and four-year averages are therefore much more reliable 
 indexes to relative yielding ability than is the performance of one year 
 alone. Those parts of the tables summarizing the results of two or more 
 years therefore deserve the most weight. 
 
536 BULLETIN No. 538 
 
 Table 3. DOUBLE CROSSES OF OHIO K24 MATURITY 
 Tested in Northern Illinois, 1946-1949 
 
 Rank 
 in 
 yield 
 
 
 Entry 
 
 Acre 
 
 Mois- 
 ture 
 in 
 grain 
 
 Shell- 
 
 Erect 
 
 Height Smut- Dr e a PP ed 
 
 Corn 
 borer 
 dam- 
 age 
 
 Plant Ear plants 
 
 A Four-year averages, 1946-1949 
 
 i 
 
 2 
 3 
 4 
 5 
 
 6 
 
 111 
 111 
 111 
 111 
 111 
 
 111 
 
 1280. . 
 
 bu. 
 92 
 
 perct. 
 22 
 21 
 20 
 20 
 21 
 
 22 
 21 
 
 perct. 
 80 
 80 
 80 
 
 79 
 78 
 
 80 
 80 
 
 perct. 
 84 
 83 
 87 
 89 
 78 
 
 88 
 85 
 
 perct. ft. in. perct. number 
 98 
 
 score 
 
 . 1279 
 
 91 
 
 96 
 
 
 1277 . 
 
 90 
 
 96 
 
 
 . 1281 
 
 . . 90 
 
 98 
 
 
 .751 
 
 88 
 
 98 
 
 
 101 
 
 86 
 
 97 
 
 
 
 96 
 
 97 
 
 
 
 6 
 
 
 
 
 
 B Two-year averages, 1948-1949 
 
 1 
 
 111. 1493. . 
 
 . 104 
 
 18 
 
 76 
 
 96 
 
 100 
 
 q 
 
 
 
 42 
 
 ? 
 
 111. 1508 
 
 . . . 102 
 
 18 
 
 78 
 
 87 
 
 100 
 
 8 
 
 q 
 
 43 
 
 3 
 
 111. 1280 . . 
 
 100 
 
 22 
 
 80 
 
 84 
 
 98 
 
 8 
 
 q 
 
 39 
 
 4 
 
 111. 1277 
 
 98 
 
 18 
 
 80 
 
 90 
 
 98 
 
 q 
 
 
 
 42 
 
 > 
 
 Ill 1279 
 
 96 
 
 20 
 
 79 
 
 86 
 
 98 
 
 8 
 
 q 
 
 40 
 
 fi 
 
 111. 1281 . 
 
 96 
 
 19 
 
 78 
 
 90 
 
 98 
 
 8 
 
 8 
 
 40 
 
 7 
 
 111.751 
 
 95 
 
 20 
 
 78 
 
 90 
 
 100 
 
 8 
 
 8 
 
 40 
 
 8 
 
 111. 101 
 
 . . . 92 
 
 22 
 
 79 
 
 94 
 
 100 
 
 8 
 
 8 
 
 39 
 
 
 
 98 
 
 20 
 
 78 
 
 90 
 
 99 
 
 8 
 
 q 
 
 41 
 
 
 Significant difference. . . 
 
 9 
 
 
 
 
 
 
 
 
 C 1949 results 
 
 1 
 
 111. 1493. . 
 
 . 108 
 
 16 
 
 78 
 
 92 
 
 100 
 
 9.3 
 
 44 
 
 
 
 1 333 
 
 1.6 
 
 2 
 
 Ohio K62 
 
 . . . 107 
 
 18 
 
 82 
 
 89 
 
 100 
 
 8.7 
 
 38 
 
 1 
 
 267 
 
 2.2 
 
 3 
 
 111. 1280 
 
 . . . 106 
 
 17 
 
 81 
 
 71 
 
 99 
 
 9.0 
 
 38 
 
 2 
 
 400 
 
 2.7 
 
 4 
 
 111. 1508 
 
 . . . 103 
 
 17 
 
 78 
 
 74 
 
 100 
 
 9.0 
 
 42 
 
 
 
 800 
 
 2.7 
 
 5 
 
 Ohio W64 
 
 . . . 103 
 
 17 
 
 84 
 
 92 
 
 100 
 
 9.0 
 
 34 
 
 1 
 
 933 
 
 2.7 
 
 6 
 
 C.B. 7345... 
 
 . 101 
 
 17 
 
 82 
 
 66 
 
 100 
 
 9.0 
 
 40 
 
 4 
 
 1 732 
 
 3.5 
 
 7 
 
 C.B. 7304 
 
 . . . 100 
 
 16 
 
 83 
 
 66 
 
 100 
 
 8.8 
 
 37 
 
 
 
 800 
 
 3.4 
 
 8 
 
 111. 751 
 
 . . . 100 
 
 16 
 
 80 
 
 81 
 
 101 
 
 9.0 
 
 41 
 
 2 
 
 800 
 
 2.3 
 
 9 
 
 111. 1277 
 
 . .. 98 
 
 17 
 
 81 
 
 82 
 
 96 
 
 9.2 
 
 43 
 
 
 
 533 
 
 1.8 
 
 10 
 
 111. 1281 
 
 . .. 98 
 
 18 
 
 79 
 
 82 
 
 99 
 
 8.8 
 
 39 
 
 
 
 933 
 
 2.4 
 
 11 
 
 C.B. 7301 . . . 
 
 . 98 
 
 16 
 
 82 
 
 51 
 
 99 
 
 9.0 
 
 46 
 
 
 
 1 333 
 
 3.4 
 
 12 
 
 C.B. 7318 
 
 . .. 95 
 
 17 
 
 81 
 
 74 
 
 100 
 
 8.7 
 
 35 
 
 1 
 
 667 
 
 3.7 
 
 13 
 
 111. 101 
 
 . . . 95 
 
 17 
 
 80 
 
 88 
 
 99 
 
 8.8 
 
 41 
 
 1 
 
 533 
 
 1.9 
 
 14 
 
 111. 1279 
 
 . .. 95 
 
 17 
 
 80 
 
 72 
 
 98 
 
 9.0 
 
 37 
 
 
 
 533 
 
 3.5 
 
 15 
 
 C.B. 7303 
 
 . .. 94 
 
 16 
 
 82 
 
 67 
 
 100 
 
 9.0 
 
 39 
 
 1 
 
 1 333 
 
 3.2 
 
 16 
 
 C.B. 7329... 
 
 . 93 
 
 15 
 
 84 
 
 75 
 
 101 
 
 8.8 
 
 40 
 
 2 
 
 1 066 
 
 2.7 
 
 17 
 
 C.B. 7307 
 
 . . . 93 
 
 16 
 
 82 
 
 79 
 
 100 
 
 8.8 
 
 42 
 
 4 
 
 133 
 
 2.8 
 
 18 
 
 111. 1489 
 
 . .. 92 
 
 16 
 
 82 
 
 51 
 
 100 
 
 9.3 
 
 45 
 
 
 
 1 600 
 
 3.7 
 
 19 
 
 OhioK24 
 
 . .. 92 
 
 17 
 
 81 
 
 77 
 
 102 
 
 9.3 
 
 39 
 
 1 
 
 1 333 
 
 2.7 
 
 20 
 
 C.B. 7323 
 
 ... 91 
 
 16 
 
 81 
 
 61 
 
 99 
 
 8.8 
 
 41 
 
 3 
 
 933 
 
 3.3 
 
 21 
 
 C.B. 7327... 
 
 . 91 
 
 15 
 
 84 
 
 81 
 
 98 
 
 9.0 
 
 41 
 
 3 
 
 2 400 
 
 2.9 
 
 22 
 
 C.B. 7314 
 
 . .. 90 
 
 15 
 
 84 
 
 69 
 
 100 
 
 9.0 
 
 42 
 
 
 
 800 
 
 3.3 
 
 23 
 
 C.B. 7335... 
 
 . .. 88 
 
 16 
 
 82 
 
 66 
 
 100 
 
 9.0 
 
 40 
 
 1 
 
 2 533 
 
 3.5 
 
 24 
 
 C.B. 7330.... 
 
 . .. 87 
 
 17 
 
 80 
 
 70 
 
 100 
 
 9.0 
 
 39 
 
 
 
 667 
 
 3.0 
 
 25 
 
 C.B. 7308 
 
 . .. 87 
 
 16 
 
 79 
 
 54 
 
 100 
 
 8.8 
 
 41 
 
 1 
 
 800 
 
 3.7 
 
 
 Average 
 
 . .. 96 
 
 16 
 
 81 
 
 73 
 
 100 
 
 9.0 
 
 40 
 
 1 
 
 1 008 
 
 2.9 
 
 
 Significant difference. . . 
 
 . . 16 
 
 
 
 
 
 
 
 
 
 
1950} 
 
 EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 
 
 537 
 
 Table 4. DOUBLE CROSSES OF IOWA 4059 MATURITY 
 Tested in Northern and North-Central Illinois, 1946-1949 
 
 Rank 
 in Entry 
 yield 
 
 Acre 
 yield 
 
 Mois- 
 ture 
 in 
 grain 
 
 Shell- 
 ing 
 
 Erect 
 plants 
 
 s,.na 
 
 Hei ( 
 
 5ht 
 
 plants 
 
 acre 
 
 dam- 
 age 
 
 Plant 
 
 Ear 
 
 A Four-year averages, 1946-1949 
 
 i 
 
 3 
 
 111 1277 
 
 bu. 
 95 
 
 perct. 
 21 
 21 
 21 
 21 
 
 perct. 
 80 
 79 
 80 
 80 
 
 perct. 
 86 
 88 
 83 
 86 
 
 perct. 
 95 
 94 
 97 
 95 
 
 ft. 
 
 in. 
 
 perct. 
 
 number 
 
 score 
 
 111. 1289. . . 
 
 95 
 
 
 
 
 
 
 111. 1280. . . 
 
 94 
 
 
 
 
 
 
 
 . 95 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 
 
 
 B Three-year averages, 1947-1949 
 
 i 
 
 3 
 4 
 
 111. 1277. . 
 
 . 102 
 
 21 
 21 
 21 
 20 
 21 
 
 80 
 
 78 
 81 
 80 
 80 
 
 83 
 84 
 86 
 79 
 83 
 
 96 
 94 
 93 
 98 
 95 
 
 9.1 
 8.8 
 8.8 
 8.8 
 8.9 
 
 40 
 39 
 39 
 38 
 39 
 
 
 
 
 111. 1289. . . 
 
 100 
 
 111. 1375 
 
 . . . 99 
 
 Ill 1280 
 
 98 
 
 
 100 
 
 Significant difference. . . 
 
 7 
 
 C Two-year averages, 1948-1949 
 
 i 
 
 2 
 
 4 
 5 
 
 6 
 7 
 8 
 
 111. 21. . 
 
 . 116 
 
 20 
 22 
 20 
 20 
 20 
 
 20 
 19 
 20 
 20 
 
 79 
 78 
 79 
 80 
 78 
 
 80 
 80 
 80 
 79 
 
 76 
 84 
 84 
 88 
 89 
 
 82 
 89 
 92 
 86 
 
 98 
 97 
 98 
 95 
 92 
 
 97 
 100 
 89 
 96 
 
 9.8 
 10.0 
 9.0 
 9.2 
 
 8.8 
 
 8.8 
 9.4 
 8.8 
 9.2 
 
 49 
 52 
 40 
 40 
 39 
 
 36 
 41 
 38 
 42 
 
 
 
 
 U S 13 
 
 112 
 
 111. 1508. . . 
 
 110 
 
 111. 1277 
 
 . . . 108 
 
 Ill 1289 
 
 106 
 
 111. 1280 
 
 104 
 
 111. 1494 
 
 . . . 104 
 
 Ill 1375 
 
 103 
 
 
 108 
 
 Significant difference. . . 
 
 9 
 
 
 
 
 D 
 
 1949 
 
 results 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 
 13 
 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 24 
 
 111. 1558. . , 
 
 . 118 
 
 20 
 
 18* 
 18 
 19 
 18 
 
 19 
 18 
 16 
 18 
 18 
 
 19 
 18 
 18 
 17 
 18 
 
 19 
 18 
 19 
 18 
 18 
 
 18 
 17 
 17 
 18 
 18 
 
 80 
 80 
 80 
 79 
 80 
 
 79 
 80 
 84 
 80 
 79 
 
 79 
 80 
 80 
 81 
 81 
 
 80 
 80 
 79 
 80 
 80 
 
 80 
 82 
 80 
 81 
 80 
 
 82 
 63 
 78 
 54 
 81 
 
 69 
 80 
 79 
 56 
 81 
 
 81 
 77 
 80 
 79 
 80 
 
 80 
 70 
 74 
 64 
 79 
 
 61 
 65 
 68 
 85 
 74 
 
 98 
 95 
 91 
 97 
 81 
 
 94 
 99 
 96 
 97 
 84 
 
 96 
 97 
 99 
 86 
 98 
 
 96 
 92 
 
 97 
 85 
 
 78 
 
 86 
 98 
 95 
 
 79 
 92 
 
 8.6 
 10.0 
 9.2 
 9.8 
 9.4 
 
 10.0 
 9.5 
 9.4 
 9.6 
 
 8.7 
 
 9.9 
 9.9 
 8.6 
 9.1 
 9.6 
 
 9.6 
 9.2 
 8.9 
 9.3 
 9.6 
 
 8.9 
 9.0 
 8.7 
 8.9 
 9.3 
 
 37 
 46 
 41 
 48 
 42 
 
 51 
 40 
 40 
 44 
 37 
 
 43 
 43 
 37 
 37 
 41 
 
 44 
 41 
 40 
 42 
 44 
 
 38 
 38 
 33 
 
 40 
 41 
 
 1 
 2 
 2 
 
 
 1 
 
 2 
 1 
 
 1 
 2 
 
 1 
 
 1 
 
 
 
 1 
 
 
 1 
 
 
 3 
 
 1 
 2 
 2 
 
 1 
 
 300 
 1 100 
 400 
 1 300 
 700 
 
 1 300 
 200 
 300 
 900 
 200 
 
 400 
 600 
 200 
 300 
 500 
 
 700 
 500 
 1 000 
 600 
 700 
 
 700 
 400 
 300 
 200 
 580 
 
 2.5 
 2.0 
 3.0 
 1.8 
 2.3 
 
 2.2 
 2.5 
 3.8 
 2.3 
 3.3 
 
 2.3 
 1.8 
 2.3 
 3.0 
 3.3 
 
 1.8 
 1.8 
 3.0 
 2.8 
 2.8 
 
 2.7 
 3.3 
 2.5 
 3.0 
 2.5 
 
 N.E. 7722 
 
 . . . 115 
 
 Ill 1277 
 
 114 
 
 111. 21 
 
 , . . 114 
 
 N E 7721 
 
 113 
 
 U S 13 
 
 111 
 
 111. 1560A.. . . . 
 
 ..'111 
 
 111. 1555A 
 
 . . . 110 
 
 N.E. 7709 
 
 109 
 
 111. 1289 
 
 . . . 109 
 
 N.E. 7705... 
 
 . 109 
 
 N.E. 7716 
 
 108 
 
 111. 1557 
 
 . . . 108 
 
 Ill 1559B 
 
 108 
 
 111. 1494 
 
 . . . 108 
 
 111. A... 
 
 . 108 
 
 Ill 1240 
 
 105 
 
 111. 1508 
 
 . . . 105 
 
 N E 7717 
 
 104 
 
 N.E. 7701 
 
 . . . 103 
 
 111. 1261. . 
 
 . 103 
 
 111. 1556B 
 
 102 
 
 111. 1280 
 
 . . . 99 
 
 Ill 1375 
 
 . 98 
 
 
 . 108 
 
 Significant difference. . . 
 
 . .. 13 
 
538 
 
 BULLETIN No. 538 
 
 Table 5. THREE-WAY AND DOUBLE CROSSES OF 
 
 IOWA 4059 MATURITY 
 Tested in Northern and North-Central Illinois, 1949 
 
 Entry 
 
 Mois- 
 Acre ture Shell- 
 yield in ing 
 grain 
 
 Sante Stand 
 
 Hei( 
 
 ;ht 
 
 Smut- Dr PP ed porn 
 ted e n ara ^orer 
 
 P lants afre tge" 
 
 Plant 
 
 Ear 
 
 M14 X 187-2 (common parent) 
 
 bu. jperct. perct. 
 
 perct. 
 
 perct. 
 
 ft. 
 
 in. 
 
 perct. 
 
 number 
 
 score 
 
 WF9. . . 
 
 102 
 
 18 78 
 
 82 
 
 98 
 
 8.4 
 
 34 
 
 
 
 300 
 
 2.0 
 
 1.205 
 
 89 
 
 19 82 
 
 82 
 
 99 
 
 8.0 
 
 38 
 
 1 
 
 300 
 
 3.1 
 
 B32 
 
 91 
 
 18 82 
 
 51 
 
 99 
 
 8.5 
 
 36 
 
 1 
 
 600 
 
 4.0 
 
 B33 
 
 100 
 
 19 77 
 
 66 
 
 98 
 
 8.9 
 
 38 
 
 3 
 
 600 
 
 2.8 
 
 B34 
 
 103 
 
 17 81 
 
 93 
 
 100 
 
 8.6 
 
 37 
 
 1 
 
 100 
 
 2.8 
 
 Ml... 
 
 . 113 
 
 18 80 
 
 51 
 
 99 
 
 9.0 
 
 40 
 
 4 
 
 300 
 
 3.6 
 
 N2 
 
 87 
 
 18 79 
 
 47 
 
 98 
 
 9.1 
 
 43 
 
 4 
 
 100 
 
 4.5 
 
 N6 
 
 109 
 
 20 81 
 
 77 
 
 100 
 
 8.2 
 
 38 
 
 3 
 
 200 
 
 3.4 
 
 Oh7B 
 
 90 
 
 19 80 
 
 85 
 
 82 
 
 8.8 
 
 38 
 
 2 
 
 
 
 2.3 
 
 Oh43 
 
 100 
 
 17 83 
 
 87 
 
 96 
 
 8.0 
 
 30 
 
 
 
 500 
 
 2.8 
 
 W22. . 
 
 . 90 
 
 17 82 
 
 78 
 
 99 
 
 8.2 
 
 34 
 
 4 
 
 300 
 
 3.0 
 
 W64 
 
 86 
 
 18 81 
 
 61 
 
 98 
 
 8,1 
 
 34 
 
 1 
 
 
 
 2.8 
 
 W72 
 
 86 
 
 23 81 
 
 67 
 
 100 
 
 8.4 
 
 34 
 
 2 
 
 300 
 
 3.1 
 
 W86 
 
 100 
 
 17 78 
 
 78 
 
 99 
 
 8.2 
 
 38 
 
 1 
 
 600 
 
 1.6 
 
 W112 
 
 100 
 
 19 81 
 
 81 
 
 96 
 
 8.6 
 
 39 
 
 1 
 
 400 
 
 1.8 
 
 W144 
 
 94 
 
 20 80 
 
 82 
 
 98 
 
 8.5 
 
 36 
 
 4 
 
 1 000 
 
 2.3 
 
 
 WF9X 
 
 1.205 (common parent) 
 
 B32... 
 
 . 92 
 
 19 81 
 
 81 
 
 95 
 
 8.9 
 
 39 
 
 1 
 
 2 000 
 
 2.3 
 
 B33 
 
 109 
 
 19 77 
 
 90 
 
 89 
 
 9.0 
 
 40 
 
 
 
 1 900 
 
 1.8 
 
 B34 
 
 82 
 
 17 79 
 
 93 
 
 99 
 
 8.1 
 
 35 
 
 4 
 
 200 
 
 2.8 
 
 Nl 
 
 110 
 
 18 81 
 
 79 
 
 98 
 
 9.2 
 
 40 
 
 
 
 400 
 
 2.5 
 
 N2 
 
 71 
 
 22 77 
 
 84 
 
 89 
 
 8.9 
 
 39 
 
 6 
 
 1 000 
 
 2.1 
 
 N6... 
 
 . 109 
 
 19 80 
 
 88 
 
 100 
 
 8.5 
 
 36 
 
 1 
 
 1 000 
 
 2.8 
 
 Oh7B 
 
 107 
 
 18 81 
 
 92 
 
 87 
 
 8.9 
 
 37 
 
 2 
 
 600 
 
 1.8 
 
 Oh43 
 
 113 
 
 18 80 
 
 96 
 
 99 
 
 8.5 
 
 33 
 
 1 
 
 600 
 
 2.1 
 
 W22 
 
 89 
 
 18 79 
 
 93 
 
 97 
 
 8.5 
 
 35 
 
 4 
 
 800 
 
 1.6 
 
 W64 
 
 92 
 
 19 82 
 
 90 
 
 96 
 
 8.6 
 
 38 
 
 2 
 
 600 
 
 1.8 
 
 W72. . , 
 
 . 80 
 
 17 78 
 
 92 
 
 93 
 
 8.2 
 
 36 
 
 2 
 
 1 400 
 
 2.0 
 
 W86 
 
 97 
 
 19 81 
 
 67 
 
 99 
 
 8.8 
 
 37 
 
 2 
 
 600 
 
 3.3 
 
 W112 
 
 104 
 
 20 80 
 
 86 
 
 93 
 
 8.6 
 
 37 
 
 1 
 
 200 
 
 2.0 
 
 W144 
 
 90 
 
 19 80 
 
 96 
 
 99 
 
 8.6 
 
 35 
 
 6 
 
 1 100 
 
 1.3 
 
 187-2 
 
 93 
 
 18 82 
 
 81 
 
 94 
 
 9.1 
 
 42 
 
 4 
 
 400 
 
 2.1 
 
 M14 
 
 94 
 
 19 80 
 
 88 
 
 96 
 
 8.4 
 
 33 
 
 5 
 
 900 
 
 2.5 
 
 Miscellaneous 
 
 Iowa 4297... 
 
 . 92 
 
 18 80 
 
 78 
 
 96 
 
 8.6 
 
 36 
 
 4 
 
 700 
 
 2.6 
 
 111.21 
 
 116 
 
 18 79 
 
 72 
 
 91 
 
 9.4 
 
 48 
 
 6 
 
 800 
 
 2.1 
 
 Ohio L41 
 
 114 
 
 20 80 
 
 66 
 
 100 
 
 9.0 
 
 40 
 
 2 
 
 600 
 
 3.0 
 
 OhioC54 
 
 112 
 
 19 82 
 
 71 
 
 95 
 
 9.0 
 
 40 
 
 2 
 
 700 
 
 2.8 
 
 Ind. 4601 
 
 109 
 
 19 83 
 
 75 
 
 91 
 
 9.2 
 
 42 
 
 2 
 
 700 
 
 2.5 
 
 111. 1574. . 
 
 . 109 
 
 19 79 
 
 74 
 
 98 
 
 9.5 
 
 43 
 
 2 
 
 900 
 
 2.0 
 
 Ind. 4610. . . 
 
 109 
 
 20 79 
 
 77 
 
 84 
 
 9.5 
 
 40 
 
 3 
 
 1 400 
 
 2.3 
 
 111. 1575 
 
 .... 103 
 
 19 80 
 
 77 
 
 99 
 
 8.8 
 
 41 
 
 1 
 
 700 
 
 1.8 
 
 111. 1571 
 
 102 
 
 19 79 
 
 76 
 
 98 
 
 8.1 
 
 38 
 
 1 
 
 1 300 
 
 3.0 
 
 Tapicorn 4 
 
 100 
 
 18 78 
 
 70 
 
 97 
 
 9.1 
 
 41 
 
 3 
 
 600 
 
 2.0 
 
 111. 1573. . 
 
 . 99 
 
 18 79 
 
 82 
 
 97 
 
 8.6 
 
 37 
 
 1 
 
 400 
 
 2.8 
 
 111. 1576 
 
 98 
 
 20 79 
 
 69 
 
 96 
 
 9.1 
 
 42 
 
 2 
 
 600 
 
 3.6 
 
 Tapicorn 2 .... 
 
 .... 97 
 
 20 75 
 
 67 
 
 97 
 
 9.4 
 
 46 
 
 1 
 
 1 600 
 
 3.5 
 
 111. 1577 
 
 96 
 
 19 80 
 
 80 
 
 97 
 
 9.1 
 
 44 
 
 2 
 
 600 
 
 2.1 
 
 111. 1508 
 
 91 
 
 19 80 
 
 79 
 
 99 
 
 8.6 
 
 36 
 
 
 
 900 
 
 2.8 
 
 111.751. . 
 
 . 90 
 
 19 80 
 
 67 
 
 92 
 
 8.2 
 
 36 
 
 8 
 
 700 
 
 3.3 
 
 111. 101 
 
 89 
 
 19 80 
 
 68 
 
 96 
 
 8.2 
 
 34 
 
 4 
 
 400 
 
 3.0 
 
 111. 1572 
 
 87 
 
 18 78 
 
 76 
 
 98 
 
 8.6 
 
 39 
 
 2 
 
 1 300 
 
 3.3 
 
 Average 
 
 . 98 
 
 19 80 
 
 78 
 
 96 
 
 8.7 
 
 38 
 
 2 
 
 684 
 
 2.6 
 
 Significant difference. . 
 
 18 
 
 
 
 
 
 
 
 
 
1950} 
 
 EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 
 
 539 
 
 Table 6. DOUBLE CROSSES OF U.S. 13 MATURITY 
 Tested in North-Central, Central, and South-Central Illinois, 1947-1949 
 
 Rank 
 
 in 
 yield 
 
 Entry 
 
 Days Mois- 
 Acre to ture Shell- Erect 
 
 TT;v,f ,,+ Dropped 
 Helght S " t - 
 
 ears 
 - 
 
 A Three-year averages, 1947-1949 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 
 111. 1421.. . 
 
 bu. 
 110 
 
 perct. 
 19 
 20 
 20 
 19 
 20 
 
 20 
 19 
 19 
 18 
 19 
 
 perct. 
 82 
 80 
 82 
 82 
 80 
 
 82 
 80 
 81 
 82 
 81 
 
 perct. 
 87 
 84 
 84 
 85 
 79 
 
 81 
 91 
 82 
 80 
 84 
 
 perct. ft. in. pe 
 99 ... 47 
 98 ... 48 
 97 ... 47 
 98 ... 45 
 97 ... 49 
 
 98 ... 43 
 97 ... 48 
 97 ... 48 
 97 ... 50 
 98 ... 47 
 
 ct. numb 
 
 111. 1422 
 
 . . . 110 
 
 111. 972A1 
 
 109 
 
 111.274-1 
 
 108 
 
 U.S. 13 
 
 ... 106 
 
 Ill 1417 
 
 105 
 
 111. 1426. . 
 
 105 
 
 111. 1337 
 
 ... 102 
 
 Ill 21 
 
 101 
 
 
 106 
 
 Significant difference. . 
 
 6 
 
 
 
 B Three-year averages, 1947-1949 
 
 1 
 
 111. 2190W. . 
 
 Ill 
 
 22 
 
 79 
 
 82 
 
 97 
 
 54 
 
 
 
 9 
 
 U S 521W 
 
 109 
 
 22 
 
 82 
 
 79 
 
 97 
 
 55 
 
 
 
 1 
 
 111. 972A1 . 
 
 108 
 
 19 
 
 82 
 
 85 
 
 97 
 
 46 
 
 
 
 4 
 
 U S 13 
 
 105 
 
 20 
 
 81 
 
 78 
 
 98 
 
 50 
 
 
 
 i 
 
 U S 537W 
 
 96 
 
 23 
 
 80 
 
 84 
 
 98 
 
 54 
 
 
 
 
 
 106 
 
 21 
 
 81 
 
 82 
 
 97 
 
 52 
 
 
 
 
 Significant difference. . 
 
 7 
 
 
 
 
 
 
 
 
 C Two-year averages, 1948-1949 
 
 1 
 
 111. 1514. . 
 
 . 124 
 
 20 
 
 82 
 
 88 
 
 98 
 
 48 
 
 
 2 
 
 111. 1509 
 
 . . . 122 
 
 21 
 
 82 
 
 87 
 
 98 
 
 50 
 
 
 3 
 
 U.S. CB1 
 
 . . . 122 
 
 21 
 
 84 
 
 84 
 
 98 
 
 52 
 
 
 4 
 
 111. 1421 
 
 ... 120 
 
 20 
 
 83 
 
 88 
 
 98 
 
 47 
 
 
 5 
 
 111. 1422 
 
 . . . 120 
 
 21 
 
 80 
 
 81 
 
 100 
 
 50 
 
 
 6 
 
 111. 1511. . 
 
 . 120 
 
 20 
 
 82 
 
 88 
 
 94 
 
 50 
 
 
 7 
 
 111. 2190W 
 
 . . . 120 
 
 24 
 
 79 
 
 82 
 
 98 
 
 56 
 
 
 8 
 
 111. 972A1 
 
 .. . 118 
 
 20 
 
 82 
 
 84 
 
 86 
 
 46 
 
 
 9 
 
 111. 1518 
 
 .. . 117 
 
 20 
 
 82 
 
 89 
 
 98 
 
 46 
 
 
 10 
 
 U.S. 521W 
 
 .. . 116 
 
 22 
 
 80 
 
 78 
 
 98 
 
 56 
 
 
 11 
 
 111. 1512. . 
 
 . 115 
 
 20 
 
 82 
 
 90 
 
 98 
 
 48 
 
 
 12 
 
 111. 274-1 
 
 ... 114 
 
 20 
 
 82 
 
 88 
 
 98 
 
 45 
 
 
 13 
 
 111. 1426 
 
 ... 114 
 
 20 
 
 80 
 
 90 
 
 96 
 
 49 
 
 
 14 
 
 U.S. 13 
 
 ... 114 
 
 20 
 
 80 
 
 79 
 
 99 
 
 50 
 
 
 15 
 
 111. 1554 
 
 ... 113 
 
 22 
 
 80 
 
 78 
 
 98 
 
 50 
 
 
 16 
 
 111. 1337. . 
 
 . 112 
 
 20 
 
 82 
 
 80 
 
 98 
 
 49 
 
 
 17 
 
 111. 1417 
 
 ... 112 
 
 21 
 
 82 
 
 83 
 
 98 
 
 42 
 
 
 18 
 
 111. 21 
 
 . . . Ill 
 
 20 
 
 82 
 
 79 
 
 97 
 
 50 
 
 
 19 
 
 111. 1515 
 
 ... Ill 
 
 22 
 
 78 
 
 82 
 
 98 
 
 50 
 
 
 20 
 
 U.S. 537W 
 
 ... 98 
 
 26 
 
 80 
 
 84 
 
 98 
 
 53 
 
 
 
 Average 
 
 ... 116 
 
 21 
 
 81 
 
 84 
 
 97 
 
 49 
 
 
 
 Significant difference. . . . 
 
 9 
 
 
 
 
 
 
 
 
 
 
 D 1949 
 
 results 
 
 1 
 
 N.E. 7815... 
 
 . 113 
 
 73 19 
 
 81 
 
 81 
 
 91 
 
 9.9 44 
 
 1 450 
 
 2 
 
 111. 1421 
 
 . . . Ill 
 
 73 18 
 
 84 
 
 77 
 
 98 
 
 9.8 46 
 
 2 200 
 
 3 
 
 111. 972A1 
 
 ... Ill 
 
 73 19 
 
 82 
 
 73 
 
 95 
 
 9.7 45 
 
 283 
 
 4 
 
 111. 1514 
 
 ... 110 
 
 72 19 
 
 83 
 
 77 
 
 99 
 
 9.8 44 
 
 1 367 
 
 5 
 
 111. 1422 
 
 ... 110 
 
 74 19 
 
 80 
 
 63 
 
 97 
 
 9.9 46 
 
 1 175 
 
 (Table is concluded on next page) 
 
540 
 
 BULLETIN No. 538 
 
 [February, 
 
 Table 6. DOUBLE CROSSES OF U.S. 13 MATURITY concluded 
 
 Rank 
 in Entry 
 yield 
 
 Acre 
 yield 
 
 Days 
 to 
 half- 
 silk 
 
 Mois- 
 ture 
 in 
 grain 
 
 Shell- 
 ing 
 
 Erect 
 plants 
 
 Stand 
 
 Height 
 
 Smut- 
 - ted 
 plants 
 
 Dropped 
 ears 
 per 
 acre 
 
 Plant 
 
 Ear 
 
 D 1949 results 
 
 concluded 
 
 
 
 bu. 
 
 
 perct. 
 
 perct. 
 
 perct. 
 
 perct. 
 
 ft. 
 
 in. 
 
 perct. 
 
 number 
 
 6 
 
 111. 274-1... 
 
 . 109 
 
 73 
 
 18 
 
 83 
 
 78 
 
 98 
 
 9.8 
 
 45 
 
 
 
 575 
 
 7 
 
 111. 1509 
 
 108 
 
 73 
 
 19 
 
 83 
 
 75 
 
 98 
 
 9.7 
 
 45 
 
 1 
 
 408 
 
 8 
 
 C.B. 7526 
 
 108 
 
 75 
 
 20 
 
 81 
 
 73 
 
 98 
 
 9.8 
 
 49 
 
 1 
 
 325 
 
 9 
 
 U.S. CB1 
 
 107"' 
 
 72 
 
 19 
 
 84 
 
 71 
 
 96 
 
 9.8 
 
 48 
 
 4 
 
 850 
 
 10 
 
 111. 1570 
 
 105 
 
 74 
 
 19 
 
 80 
 
 64 
 
 99 
 
 9.5 
 
 48 
 
 1 
 
 233 
 
 11 
 
 111. 1511.. 
 
 . 105 
 
 72 
 
 18 
 
 82 
 
 78 
 
 91 
 
 9.8 
 
 46 
 
 3 
 
 817 
 
 12 
 
 111. 1332 
 
 104 
 
 75 
 
 18 
 
 82 
 
 75 
 
 96 
 
 9.8 
 
 46 
 
 
 
 175 
 
 13 
 
 U.S. 13 
 
 104 
 
 74 
 
 19 
 
 81 
 
 61 
 
 98 
 
 9.8 
 
 48 
 
 1 
 
 800 
 
 14 
 
 C.B. 7520 
 
 . . . . . 104 
 
 75 
 
 18 
 
 82 
 
 77 
 
 96 
 
 9.9 
 
 50 
 
 1 
 
 300 
 
 15 
 
 111. 2190W 
 
 103 
 
 75 
 
 21 
 
 79 
 
 67 
 
 96 
 
 10.4 
 
 53 
 
 4 
 
 817 
 
 16 
 
 N.E. 7803... 
 
 . 102 
 
 74 
 
 20 
 
 80 
 
 78 
 
 94 
 
 10.3 
 
 48 
 
 
 
 1 233 
 
 17 
 
 N.E. 7805 
 
 101 
 
 73 
 
 19 
 
 81 
 
 65 
 
 99 
 
 10.0 
 
 51 
 
 
 
 658 
 
 18 
 
 U.S. CB2 
 
 101 
 
 75 
 
 20 
 
 81 
 
 68 
 
 94 
 
 9.8 
 
 48 
 
 4 
 
 742 
 
 19 
 
 111. 1554 
 
 101 
 
 74 
 
 21 
 
 81 
 
 62 
 
 98 
 
 9.8 
 
 49 
 
 1 
 
 450 
 
 20 
 
 N.E. 7830 
 
 100 
 
 75 
 
 18 
 
 80 
 
 78 
 
 99 
 
 10.2 
 
 51 
 
 1 
 
 1 308 
 
 21 
 
 111.21. . 
 
 . 99 
 
 74 
 
 18 
 
 83 
 
 59 
 
 96 
 
 9.5 
 
 48 
 
 
 
 392 
 
 22 
 
 111. 1246 
 
 98 
 
 72 
 
 17 
 
 83 
 
 70 
 
 97 
 
 9.4 
 
 46 
 
 3 
 
 408 
 
 23 
 
 C.B. 7513 
 
 98 
 
 74 
 
 17 
 
 80 
 
 72 
 
 97 
 
 9.4 
 
 45 
 
 1 
 
 842 
 
 24 
 
 U.S. 521W 
 
 97 
 
 76 
 
 21 
 
 81 
 
 58 
 
 96 
 
 10.1 
 
 52 
 
 3 
 
 733 
 
 25 
 
 111. 1518 
 
 97 
 
 72 
 
 18 
 
 82 
 
 79 
 
 98 
 
 9.3 
 
 41 
 
 5 
 
 367 
 
 26 
 
 C.B. 7508... 
 
 . 97 
 
 77 
 
 19 
 
 81 
 
 72 
 
 95 
 
 9.8 
 
 47 
 
 2 
 
 883 
 
 27 
 
 111. 1417 
 
 97 
 
 71 
 
 18 
 
 83 
 
 67 
 
 97 
 
 9.4 
 
 42 
 
 1 
 
 350 
 
 28 
 
 N.E. 7814 
 
 96 
 
 72 
 
 18 
 
 80 
 
 80 
 
 97 
 
 9.8 
 
 45 
 
 2 
 
 683 
 
 29 
 
 C.B. 7502 
 
 95 
 
 75 
 
 19 
 
 80 
 
 83 
 
 95 
 
 9.3 
 
 37 
 
 1 
 
 408 
 
 30 
 
 N.E. 7826 
 
 95 
 
 76 
 
 20 
 
 79 
 
 76 
 
 97 
 
 9.9 
 
 47 
 
 1 
 
 725 
 
 31 
 
 111. 1426. . . 
 
 . 95 
 
 73 
 
 18 
 
 82 
 
 82 
 
 96 
 
 9.3 
 
 44 
 
 2 
 
 600 
 
 32 
 
 111. 1337 
 
 95 
 
 73 
 
 18 
 
 82 
 
 67 
 
 97 
 
 9.3 
 
 44 
 
 1 
 
 850 
 
 33 
 
 C.B. 7506 
 
 93 
 
 76 
 
 20 
 
 80 
 
 75 
 
 98 
 
 9.6 
 
 44 
 
 
 
 492 
 
 34 
 
 C.B. 7514 
 
 93 
 
 76 
 
 19 
 
 78 
 
 76 
 
 95 
 
 9.5 
 
 46 
 
 2 
 
 583 
 
 35 
 
 111. 1512 
 
 92 
 
 73 
 
 19 
 
 82 
 
 80 
 
 98 
 
 9.5 
 
 44 
 
 1 
 
 1 492 
 
 36 
 
 K. 2275W. . . 
 
 . 92 
 
 78 
 
 20 
 
 82 
 
 76 
 
 96 
 
 9.8 
 
 48 
 
 2 
 
 800 
 
 37 
 
 111. 1515 
 
 91 
 
 74 
 
 18 
 
 79 
 
 70 
 
 95 
 
 9.7 
 
 48 
 
 2 
 
 1 700 
 
 38 
 
 N.E. 7802 
 
 91 
 
 74 
 
 19 
 
 78 
 
 78 
 
 99 
 
 10.0 
 
 45 
 
 2 
 
 1 267 
 
 39 
 
 C.B. 7501 
 
 91 
 
 76 
 
 20 
 
 79 
 
 70 
 
 98 
 
 9.5 
 
 46 
 
 2 
 
 650 
 
 40 
 
 111. 1240 
 
 88 
 
 69 
 
 17 
 
 81 
 
 82 
 
 97 
 
 8.8 
 
 36 
 
 1 
 
 258 
 
 41 
 
 C.B. 7519... 
 
 . 85 
 
 78 
 
 20 
 
 80 
 
 68 
 
 98 
 
 10.0 
 
 52 
 
 1 
 
 433 
 
 42 
 
 111. A.... 
 
 80 
 
 74 
 
 19 
 
 80 
 
 61 
 
 94 
 
 9.5 
 
 44 
 
 2 
 
 450 
 
 43 
 
 C.B. 7529 
 
 78 
 
 75 
 
 20 
 
 78 
 
 79 
 
 91 
 
 9.0 
 
 41 
 
 1 
 
 608 
 
 44 
 
 U.S. 537W 
 
 75 
 
 81 
 
 24 
 
 79 
 
 71 
 
 97 
 
 10.2 
 
 51 
 
 
 
 67 
 
 45 
 
 C.B. 7503 
 
 75 
 
 78 
 
 20 
 
 79 
 
 79 
 
 98 
 
 9.4 
 
 45 
 
 1 
 
 317 
 
 46 
 
 C.B. 7504... 
 
 . 68 
 
 78 
 
 19 
 
 76 
 
 83 
 
 97 
 
 8.8 
 
 38 
 
 1 
 
 433 
 
 47 
 
 C.B. 7523 
 
 66 
 
 74 
 
 19 
 
 76 
 
 78 
 
 96 
 
 8.8 
 
 43 
 
 1 
 
 458 
 
 
 Average 
 
 97 
 
 74 
 
 19 
 
 81 
 
 72 
 
 96 
 
 9.7 
 
 46 
 
 1 
 
 626 
 
 
 Significant difference 
 
 12 
 
 
 
 
 
 
 
 
 
 
1950] 
 
 EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 
 
 541 
 
 Table 7. THREE-WAY AND DOUBLE CROSSES OF 
 
 U.S. 13 MATURITY 
 Tested in North-Central, Central, and South-Central Illinois, 1949 
 
 Entry 
 
 Acre 
 yield 
 
 Days Mois- 
 to ture Erect o t j 
 half- in plants 
 silk grain 
 
 Height 
 
 Smut- 
 - ted 
 plants 
 
 Dropped 
 ears 
 per 
 acre 
 
 Prema- 
 turely 
 dead 
 plants 
 
 Plant 
 
 Eai 
 
 WF9 X 38-11 (common parent) 
 
 
 bu. 
 
 perct. 
 
 perct. perct. 
 
 ft. 
 
 in. 
 
 perct. 
 
 number 
 
 perct. 
 
 C103... 
 
 ... 88 
 
 74 
 
 18 
 
 89 
 
 92 
 
 9 
 
 .6 
 
 45 
 
 5 
 
 825 
 
 24 
 
 C104 
 
 ... 92 
 
 76 
 
 17 
 
 69 
 
 79 
 
 9 
 
 ,8 
 
 49 
 
 3 
 
 283 
 
 46 
 
 Hy 
 
 . . . 102 
 
 74 
 
 20 
 
 79 
 
 95 
 
 9 
 
 8 
 
 49 
 
 3 
 
 533 
 
 13 
 
 T92 
 
 ... 85 
 
 74 
 
 18 
 
 79 
 
 92 
 
 9 
 
 ,4 
 
 46 
 
 3 
 
 800 
 
 19 
 
 T96 
 
 ... 76 
 
 74 
 
 17 
 
 78 
 
 89 
 
 9 
 
 .6 
 
 48 
 
 3 
 
 800 
 
 4 
 
 H12... 
 
 . 80 
 
 75 
 
 19 
 
 80 
 
 95 
 
 9 
 
 .1 
 
 46 
 
 8 
 
 550 
 
 4 
 
 H13 
 
 . .. 86 
 
 74 
 
 19 
 
 90 
 
 88 
 
 9 
 
 .8 
 
 49 
 
 6 
 
 2 067 
 
 25 
 
 H14 
 
 ... 81 
 
 73 
 
 19 
 
 75 
 
 93 
 
 9 
 
 9 
 
 46 
 
 4 
 
 1 133 
 
 17 
 
 H15 
 
 . . . 102 
 
 71 
 
 19 
 
 83 
 
 96 
 
 9 
 
 .7 
 
 44 
 
 4 
 
 592 
 
 14 
 
 H16 
 
 . . . 92 
 
 79 
 
 19 
 
 78 
 
 94 
 
 9 
 
 ,7 
 
 49 
 
 3 
 
 600 
 
 3 
 
 H17... 
 
 . 92 
 
 74 
 
 19 
 
 62 
 
 97 
 
 9 
 
 .4 
 
 44 
 
 1 
 
 258 
 
 7 
 
 HIS 
 
 . .. 75 
 
 76 
 
 19 
 
 80 
 
 94 
 
 10 
 
 4 
 
 51 
 
 21 
 
 1 550 
 
 3 
 
 L317 
 
 . .. 112 
 
 75 
 
 18 
 
 65 
 
 94 
 
 10 
 
 2 
 
 54 
 
 
 
 1 225 
 
 12 
 
 BIO 
 
 . .. 87 
 
 78 
 
 19 
 
 75 
 
 95 
 
 8, 
 
 8 
 
 43 
 
 2 
 
 650 
 
 10 
 
 Bll 
 
 . .. 94 
 
 74 
 
 19 
 
 88 
 
 94 
 
 9 
 
 3 
 
 44 
 
 2 
 
 833 
 
 8 
 
 K148... 
 
 . 96 
 
 74, 
 
 19 
 
 83 
 
 90 
 
 10 
 
 2 
 
 46 
 
 5 
 
 417 
 
 18 
 
 K150 
 
 . . . 91 
 
 71 
 
 18 
 
 66 
 
 93 
 
 9 
 
 2 
 
 43 
 
 3 
 
 650 
 
 50 
 
 Mo557 
 
 . .. 112 
 
 74 
 
 21 
 
 72 
 
 95 
 
 9 
 
 6 
 
 45 
 
 5 
 
 375 
 
 8 
 
 N3 
 
 ... 82 
 
 72 
 
 18 
 
 84 
 
 86 
 
 8 
 
 3 
 
 40 
 
 4 
 
 350 
 
 13 
 
 Oh4C 
 
 ... 96 
 
 78 
 
 21 
 
 88 
 
 93 
 
 9 
 
 8 
 
 50 
 
 
 
 858 
 
 2 
 
 Oh7A. . 
 
 . 87 
 
 76 
 
 20 
 
 84 
 
 92 
 
 9 
 
 ,5 
 
 48 
 
 2 
 
 775 
 
 4 
 
 Oh29 
 
 . .. 89 
 
 74 
 
 18 
 
 92 
 
 78 
 
 9 
 
 ,7 
 
 43 
 
 9 
 
 350 
 
 22 
 
 Oh45 
 
 ... Ill 
 
 72 
 
 20 
 
 87 
 
 97 
 
 9 
 
 .6 
 
 41 
 
 4 
 
 608 
 
 13 
 
 W92 
 
 ...100 
 
 72 
 
 18 
 
 71 
 
 92 
 
 9 
 
 3 
 
 44 
 
 3 
 
 442 
 
 13 
 
 
 HyX 
 
 L317 
 
 (common 
 
 parent) 
 
 C103. .. 
 
 . 83 
 
 76 
 
 21 
 
 88 
 
 85 
 
 10 
 
 1 
 
 48 
 
 2 
 
 467 
 
 12 
 
 C104 
 
 . . . 100 
 
 75 
 
 20 
 
 44 
 
 86 
 
 10 
 
 .4 
 
 54 
 
 3 
 
 192 
 
 52 
 
 WF9. ... 
 
 . .. 90 
 
 73 
 
 19 
 
 60 
 
 93 
 
 9 
 
 8 
 
 48 
 
 
 
 258 
 
 44 
 
 38-11 
 
 . . . 104 
 
 75 
 
 19 
 
 54 
 
 95 
 
 10 
 
 ,4 
 
 57 
 
 2 
 
 242 
 
 5 
 
 T92 
 
 . . . 92 
 
 74 
 
 19 
 
 61 
 
 96 
 
 9 
 
 9 
 
 52 
 
 
 
 542 
 
 28 
 
 T96... 
 
 . 96 
 
 76 
 
 19 
 
 64 
 
 99 
 
 10 
 
 4 
 
 59 
 
 3 
 
 1 517 
 
 13 
 
 H12 
 
 ... 96 
 
 78 
 
 20 
 
 64 
 
 98 
 
 10 
 
 ,2 
 
 57 
 
 3 
 
 150 
 
 1 
 
 H13 
 
 ... 91 
 
 76 
 
 20 
 
 73 
 
 90 
 
 10. 
 
 4 
 
 56 
 
 2 
 
 383 
 
 7 
 
 H14 
 
 . .. 85 
 
 78 
 
 22 
 
 59 
 
 89 
 
 10 
 
 4 
 
 54 
 
 
 
 942 
 
 12 
 
 H15 
 
 . . . 92 
 
 74 
 
 20 
 
 56 
 
 93 
 
 10 
 
 1 
 
 48 
 
 1 
 
 667 
 
 11 
 
 H16... 
 
 . 105 
 
 78 
 
 22 
 
 64 
 
 98 
 
 10. 
 
 4 
 
 58 
 
 4 
 
 800 
 
 21 
 
 H17 
 
 . . . 102 
 
 74 
 
 21 
 
 51 
 
 96 
 
 10 
 
 4 
 
 54 
 
 2 
 
 300 
 
 6 
 
 HIS 
 
 . . . 109 
 
 77 
 
 22 
 
 58 
 
 90 
 
 10. 
 
 6 
 
 57 
 
 7 
 
 883 
 
 7 
 
 BIO 
 
 . . . 97 
 
 78 
 
 21 
 
 55 
 
 93 
 
 10. 
 
 
 
 50 
 
 1 
 
 408 
 
 33 
 
 Bll 
 
 . . . 107 
 
 73 
 
 20 
 
 80 
 
 97 
 
 9. 
 
 9 
 
 52 
 
 
 
 108 
 
 16 
 
 K148... 
 
 . 90 
 
 78 
 
 21 
 
 62 
 
 90 
 
 10, 
 
 7 
 
 55 
 
 
 
 150 
 
 14 
 
 K150 
 
 . . . 102 
 
 74 
 
 19 
 
 51 
 
 94 
 
 10. 
 
 
 
 51 
 
 1 
 
 1 258 
 
 32 
 
 Mo557 
 
 . .. 94 
 
 74 
 
 21 
 
 65 
 
 96 
 
 10. 
 
 
 
 51 
 
 2 
 
 742 
 
 14 
 
 N3 
 
 . . . 97 
 
 74 
 
 20 
 
 62 
 
 95 
 
 9. 
 
 7 
 
 49 
 
 1 
 
 175 
 
 13 
 
 Oh4C 
 
 . .. 90 
 
 78 
 
 24 
 
 65 
 
 92 
 
 9. 
 
 8 
 
 52 
 
 1 
 
 1 233 
 
 7 
 
 Oh7A. . 
 
 . 88 
 
 80 
 
 22 
 
 72 
 
 98 
 
 10, 
 
 2 
 
 56 
 
 1 
 
 908 
 
 2 
 
 Oh29 
 
 . . . 106 
 
 76 
 
 21 
 
 85 
 
 96 
 
 10. 
 
 2 
 
 50 
 
 4 
 
 133 
 
 25 
 
 Oh45 
 
 . .. 121 
 
 70 
 
 21 
 
 74 
 
 97 
 
 10. 
 
 3 
 
 45 
 
 1 
 
 475 
 
 2 
 
 W92 
 
 ...104 
 
 74 
 
 19 
 
 61 
 
 96 
 
 10. 
 
 2 
 
 54 
 
 3 
 
 275 
 
 16 
 
 Miscellaneous 
 
 U.S. 13... 
 
 . 102 
 
 74 
 
 18 
 
 69 
 
 93 
 
 10. 
 
 1 
 
 51 
 
 
 
 392 
 
 
 111. 1570 
 
 . . . 105 
 
 72 
 
 19 
 
 69 
 
 95 
 
 9. 
 
 7 
 
 42 
 
 2 
 
 842 
 
 
 Average 
 
 . 95 
 
 75 
 
 20 
 
 71 
 
 93 
 
 9. 
 
 9 
 
 49 
 
 3 
 
 639 
 
 15 
 
 Significant difference. . 
 
 . . . 14 
 
 
 
 
 
 
 
 
 
 
 
542 
 
 BULLETIN No. 538 
 
 [February, 
 
 Table 8. DOUBLE CROSSES OF ILLINOIS 448 MATURITY 
 Tested in South-Central and Southern Illinois, 1947-1949 
 
 Rank 
 in Entry 
 yield 
 
 Mois- 
 Acre ture Shell- 
 yield in ing 
 grain 
 
 Erect 
 plants 
 
 Stand 
 
 Height 
 
 Smut- 
 ted 
 plants 
 
 Plant 
 
 Ear 
 
 
 
 A Three-year 
 
 averages 
 
 , 1947-1949 
 
 1 
 2 
 3 
 4 
 
 U S 13 
 
 bu. 
 
 . 96 
 
 perct. perct. 
 18 82 
 23 80 
 22 80 
 18 82 
 20 81 
 
 perct. 
 75 
 66 
 67 
 67 
 69 
 
 perct. 
 98 
 95 
 90 
 93 
 94 
 
 ft. 
 9.7 
 10.0 
 10.0 
 9.6 
 9.8 
 
 in. 
 48 
 55 
 57 
 51 
 53 
 
 perct. 
 
 111 1445A 
 
 . 93 
 
 Ill 1459 
 
 . 90 
 
 Ill 200 
 
 89 
 
 
 . 92 
 
 Significant difference. 
 
 10 
 
 
 
 
 
 B Two-year 
 
 averages, 
 
 1948-1949 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 
 111. 1541A.. 
 
 . 104 
 
 25 
 
 19 
 18 
 21 
 24 
 
 18 
 24 
 24 
 22 ' 
 25 
 
 22 
 22 
 
 80 
 82 
 82 
 80 
 
 78 
 
 82 
 80 
 80 
 80 
 80 
 
 80 
 80 
 
 74 
 80 
 76 
 75 
 
 72 
 
 65 
 64 
 66 
 72 
 68 
 
 78 
 72 
 
 96 
 96 
 99 
 86 
 92 
 
 92 
 94 
 86 
 98 
 82 
 
 94 
 92 
 
 10.5 
 9.8 
 9.8 
 10.3 
 10.2 
 
 10.2 
 10.2 
 10.4 
 10.2 
 10.0 
 
 10.2 
 10.2 
 
 62 
 52 
 
 47 
 57 
 58 
 
 53 
 55 
 58 
 58 
 55 
 
 60 
 56 
 
 
 Ill 1349. 
 
 102 
 
 U S 13 
 
 101 
 
 111. 1540 
 
 98 
 
 Ill 1521B 
 
 97 
 
 111. 200. . 
 
 . 96 
 
 Ill 1445A 
 
 95 
 
 111. 1459 . 
 
 . 94 
 
 111. 1537 
 
 94 
 
 Ill 1539A 
 
 92 
 
 111. 1521 
 
 88 
 
 Average 
 
 96 
 
 
 13 
 
 
 
 
 
 C Two-year 
 
 averages, 
 
 1948-1949 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 
 111. 2214W. . 
 
 100 
 
 21 
 22 
 20 
 18 
 21 
 
 18 
 20 
 20 
 
 82 
 
 82 
 80 
 81 
 78 
 
 82 
 82 
 81 
 
 83 
 
 79 
 87 
 77 
 82 
 
 80 
 69 
 80 
 
 100 
 103 
 99 
 96 
 95 
 
 98 
 97 
 98 
 
 9 
 9 
 9 
 10 
 9 
 
 9 
 9 
 9 
 
 .3 
 ,2 
 
 .7 
 
 .0 
 
 ,4. 
 
 .2 
 .0 
 
 .4 
 
 44 
 47 
 48 
 46 
 46 
 
 44 
 40 
 45 
 
 
 U.S. 541W 
 
 99 
 
 111. 2159AW 
 
 95 
 
 111. 200. . 
 
 93 
 
 111. 2216W 
 
 91 
 
 U.S. 13... 
 
 . 88 
 
 K. 2275W.... 
 
 88 
 
 Average 
 
 93 
 
 Significant difference. 
 
 9 
 
 
 
 D 1949 results 
 
 i 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 C.B. 7664... 
 
 . 96 
 
 23 
 21 
 21 
 22 
 21 
 
 18 
 21 
 22 
 21 
 24 
 
 21 
 20 
 22 
 22 
 20 
 
 20 
 22 
 19 
 19 
 22 
 
 82 
 82 
 83 
 
 77 
 83 
 
 82 
 81 
 80 
 81 
 80 
 
 81 
 81 
 80 
 82 
 80 
 
 82 
 83 
 81 
 82 
 82 
 
 77 
 63 
 68 
 66 
 66 
 
 76 
 58 
 56 
 61 
 63 
 
 65 
 76 
 55 
 57 
 61 
 
 66 
 61 
 56 
 60 
 
 74 
 
 92 
 97 
 96 
 91 
 100 
 
 99 
 97 
 97 
 92 
 92 
 
 99 
 97 
 98 
 97 
 98 
 
 95 
 99 
 94 
 99 
 96 
 
 9 
 9 
 10 
 10 
 
 9 
 
 9 
 10 
 10 
 9 
 10 
 
 9 
 9 
 10 
 10 
 10 
 
 9 
 9 
 9 
 9 
 9 
 
 .8 
 .6 
 ,2 
 
 .6 
 
 .2 
 .1 
 ,0 
 .5 
 .0 
 
 .5 
 .9 
 .4 
 .0 
 .0 
 
 .4 
 .6 
 .9 
 .6 
 .5 
 
 53 
 50 
 57 
 56 
 49 
 
 44 
 53 
 55 
 52 
 53 
 
 51 
 52 
 56 
 55 
 55 
 
 48 
 51 
 50 
 49 
 53 
 
 
 
 2 
 
 6 
 
 
 
 1 
 
 
 
 1 
 
 
 
 
 
 
 
 1 
 
 
 
 
 2 
 
 1 
 
 2 
 
 
 
 C.B. 7605W.. 
 
 ... 91 
 
 C.B. 7627W.. 
 
 90 
 
 111. 1459. . 
 
 89 
 
 111. 2214W 
 
 .... 88 
 
 111. 1332. . 
 
 88 
 
 C.B. 7638W... 
 
 88 
 
 C.B. 7610 
 
 87 
 
 C.B. 7648W.. 
 
 87 
 
 C.B. 7624 
 
 86 
 
 C.B. 7655W.. 
 
 86 
 
 111. 2159AW.. 
 
 85 
 
 C.B. 7610W.. 
 
 85 
 
 C.B. 7606W... 
 
 84 
 
 111. 2224W 
 
 84 
 
 111. 1349. . 
 
 83 
 
 U.S. 541W.. 
 
 83 
 
 111. 200 
 
 83 
 
 U.S. 13 .. 
 
 82 
 
 111. 1567B 
 
 81 
 
 (Table is concluded on next page) 
 
1950} EXPERIMENTAL CORN HYBRIDS TESTED IN 1949 543 
 
 Table 8. DOUBLE CROSSES OF ILLINOIS 448 MATURITY 
 
 concluded 
 
 Rank 
 in Entry 
 yield 
 
 Acre 
 yield 
 
 Mois- 
 ture 
 in 
 grain 
 
 Shell- 
 ing 
 
 Erect 
 plants 
 
 Stand 
 
 Height 
 
 Smut- 
 ted 
 plants 
 
 Plant 
 
 Ear 
 
 D 1949 results concluded 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 
 31 
 32 
 33 
 34 
 35 
 
 36 
 37 
 38 
 39 
 40 
 
 41 
 42 
 43 
 44 
 45 
 
 46 
 47 
 
 48 
 49 
 
 K. 2275 W... 
 
 bu. 
 81 
 
 perct. 
 21 
 22 
 25 
 19 
 23 
 
 18 
 24 
 18 
 22 
 24 
 
 21 
 26 
 22 
 24 
 20 
 
 27 
 24 
 24 
 23 
 23 
 
 25 
 20 
 21 
 24 
 24 
 
 23 
 27 
 28 
 24 
 22 
 
 perct. 
 83 
 81 
 80 
 82 
 78 
 
 83 
 79 
 80 
 79 
 80 
 
 83 
 79 
 79 
 79 
 82 
 
 80 
 79 
 78 
 80 
 79 
 
 78 
 79 
 76 
 80 
 77 
 
 78 
 79 
 80 
 78 
 80 
 
 perct. 
 49 
 72 
 62 
 64 
 47 
 
 61 
 64 
 63 
 
 72 
 56 
 
 65 
 38 
 73 
 57 
 62 
 
 53 
 63 
 67 
 66 
 66 
 
 70 
 66 
 65 
 56 
 76 
 
 61 
 56 
 44 
 57 
 63 
 
 perct. 
 96 
 97 
 94 
 88 
 99 
 
 98 
 92 
 98 
 
 94 
 97 
 
 100 
 98 
 94 
 94 
 97 
 
 99 
 96 
 99 
 100 
 94 
 
 98 
 97 
 92 
 98 
 96 
 
 96 
 91 
 78 
 98 
 96 
 
 ft. 
 
 9.5 
 9.9 
 9.9 
 
 9.2 
 
 9.8 
 
 8.9 
 9.6 
 9.2 
 9.2 
 10.1 
 
 9.5 
 10.0 
 10.1 
 10.0 
 9.4 
 
 10.2 
 10.1 
 9.6 
 9.8 
 9.8 
 
 9.6 
 9.1 
 9.6 
 9.8 
 9.2 
 
 9.8 
 9.9 
 9.9 
 9.8 
 9.7 
 
 in. 
 46 
 53 
 54 
 44 
 57 
 
 44 
 52 
 49 
 46 
 58 
 
 52 
 54 
 57 
 56 
 50 
 
 60 
 55 
 55 
 56 
 54 
 
 55 
 49 
 50 
 55 
 52 
 
 54 
 54 
 54 
 55 
 52 
 
 perct. 
 
 1 
 2 
 
 
 
 1 
 
 1 
 1 
 
 1 
 1 
 
 
 
 
 1 
 
 3 
 
 
 
 3 
 
 
 1 
 1 
 1 
 
 1 
 
 
 
 1 
 
 1 
 
 1 
 
 
 2 
 3 
 1 
 
 C.B. 7601W 
 
 80 
 
 111. 1568. . 
 
 80 
 
 111. A 
 
 79 
 
 C.B. 7636 
 
 79 
 
 111. 1337 
 
 79 
 
 111. 1521B. . 
 
 79 
 
 Ill 1570 
 
 79 
 
 U.S. 505. 
 
 79 
 
 C.B. 7603 
 
 79 
 
 C.B. 7647W.. 
 
 78 
 
 Ill 1445\ * 
 
 78 
 
 111. 1521. . 
 
 78 
 
 111. 1564B 
 
 78 
 
 C.B. 7619W 
 
 77 
 
 111. 1541A 
 
 77 
 
 C.B. 7609 . 
 
 76 
 
 111. 1563B 
 
 75 
 
 C B 7633 
 
 74 
 
 C.B. 7632. . 
 
 74 
 
 C.B. 7663... 
 
 73 
 
 Ill 1515 
 
 73 
 
 111. 2216W. . . 
 
 73 
 
 C.B. 7605 
 
 72 
 
 Ill 1566B 
 
 71 
 
 111 1565 
 
 70 
 
 111. 1540. . 
 
 68 
 
 111. 1539A 
 
 65 
 
 111. 1537 
 
 57 
 
 
 80 
 
 Significant difference. . 
 
 16 
 
 
 
544 BULLETIN No. 538 
 
 Table 9. THREE-WAY AND DOUBLE CROSSES OF 
 ILLINOIS 448 MATURITY 
 
 Tested in South-Central and Southern Illinois, 1949 
 
 Entry 
 
 Mois- 
 Acre ture Shell- 
 yield in ing 
 grain 
 
 Erec 
 plan 
 
 i* Stand 
 
 M 
 
 Height 
 
 Smut- 
 ted 
 plants 
 
 Prema- 
 turely 
 dead 
 plants 
 
 Plant 
 
 Eai 
 
 T8 X CI.21E 
 
 (common parent) 
 
 
 bu. 
 
 perct. 
 
 perct. 
 
 perct. perct. 
 
 ft. 
 
 in. 
 
 perct. 
 
 perct. 
 
 Hy2 
 
 89 
 
 22 
 
 81 
 
 76 
 
 99 
 
 9.5 
 
 49 
 
 1 
 
 22 
 
 R38 
 
 90 
 
 25 
 
 77 
 
 60 
 
 99 
 
 10.0 
 
 54 
 
 1 
 
 3 
 
 R62 
 
 97 
 
 20 
 
 82 . 
 
 68 
 
 96 
 
 9.8 
 
 50 
 
 
 
 12 
 
 R63 
 
 76 
 
 21 
 
 80 
 
 71 
 
 99 
 
 10.2 
 
 56 
 
 
 
 12 
 
 H10 
 
 87 
 
 20 
 
 84 
 
 75 
 
 86 
 
 10.1 
 
 53 
 
 1 
 
 9 
 
 38-11 
 
 . 89 
 
 20 
 
 77 
 
 78 
 
 96 
 
 10.2 
 
 54 
 
 1 
 
 
 L317 
 
 97 
 
 23 
 
 79 
 
 55 
 
 99 
 
 10.2 
 
 58 
 
 
 
 4 
 
 Kys 
 
 79 
 
 24 
 
 77 
 
 74 
 
 91 
 
 9.9 
 
 53 
 
 
 
 4 
 
 K4 
 
 97 
 
 24 
 
 80 
 
 63 
 
 92 
 
 10.5 
 
 58 
 
 
 
 1 
 
 K148 : 
 
 86 
 
 24 
 
 77 
 
 80 
 
 100 
 
 10.5 
 
 52 
 
 1 
 
 7 
 
 K155 
 
 . 85 
 
 22 
 
 78 
 
 66 
 
 95 
 
 10.2 
 
 55 
 
 2 
 
 o 
 
 K166 
 
 71 
 
 23 
 
 78 
 
 70 
 
 94 
 
 9.5 
 
 51 
 
 1 
 
 6 
 
 K201 
 
 82 
 
 26 
 
 77 
 
 70 
 
 94 
 
 9.4 
 
 49 
 
 2 
 
 
 Ky36-ll 
 
 88 
 
 24 
 
 81 
 
 60 
 
 94 
 
 10.0 
 
 53 
 
 
 
 o 
 
 Mo567 
 
 92 
 
 21 
 
 78 
 
 63 
 
 98 
 
 10.2 
 
 54 
 
 1 
 
 19 
 
 Mo572 
 
 . 80 
 
 22 
 
 78 
 
 62 
 
 94 
 
 10.0 
 
 53 
 
 2 
 
 1 
 
 Mo577 
 
 92 
 
 23 
 
 80 
 
 67 
 
 99 
 
 10.0 
 
 50 
 
 1 
 
 15 
 
 Oh7B 
 
 98 
 
 21 
 
 80 
 
 86 
 
 97 
 
 10.0 
 
 51 
 
 
 
 1 
 
 Oh29 
 
 85 
 
 22 
 
 79 
 
 67 
 
 98 
 
 9.8 
 
 50 
 
 1 
 
 
 Oh41 
 
 99 
 
 23 
 
 78 
 
 76 
 
 99 
 
 9.8 
 
 52 
 
 
 
 4 
 
 Okl2 
 
 . 86 
 
 27 
 
 79 
 
 68 
 
 94 
 
 10.0 
 
 51 
 
 
 
 
 
 T202 
 
 84 
 
 25 
 
 79 
 
 64 
 
 94 
 
 9.6 
 
 53 
 
 1 
 
 5 
 
 CI.7 
 
 102 
 
 24 
 
 80 
 
 73 
 
 91 
 
 10.5 
 
 56 
 
 
 
 3 
 
 
 38-11 X 
 
 K201 
 
 (common 
 
 parent) 
 
 
 
 
 
 Hy2 ... 
 
 . 85 
 
 21 
 
 80 
 
 71 
 
 90 
 
 9.4 
 
 49 
 
 
 
 26 
 
 R38 
 
 74 
 
 23 
 
 76 
 
 53 
 
 91 
 
 9.5 
 
 56 
 
 
 
 10 
 
 R62 
 
 95 
 
 19 
 
 82 
 
 54 
 
 96 
 
 10.2 
 
 55 
 
 
 
 15 
 
 R63 
 
 63 
 
 19 
 
 78 
 
 66 
 
 96 
 
 9.6 
 
 50 
 
 
 
 4 
 
 H10 
 
 84 
 
 18 
 
 83 
 
 71 
 
 96 
 
 10.4 
 
 54 
 
 
 
 6 
 
 L317 
 
 . 91 
 
 22 
 
 80 
 
 66 
 
 100 
 
 10.4 
 
 58 
 
 
 
 2 
 
 Kys 
 
 75 
 
 22 
 
 76 
 
 68 
 
 91 
 
 10.2 
 
 58 
 
 
 
 2 
 
 K4 
 
 76 
 
 22 
 
 79 
 
 65 
 
 92 
 
 9.9 
 
 55 
 
 1 
 
 3 
 
 K148 
 
 77 
 
 23 
 
 76 
 
 78 
 
 98 
 
 10.1 
 
 52 
 
 1 
 
 14 
 
 K155 
 
 73 
 
 20 
 
 78 
 
 80 
 
 99 
 
 9.9 
 
 52 
 
 
 
 6 
 
 K166... 
 
 . 61 
 
 21 
 
 75 
 
 76 
 
 94 
 
 9.4 
 
 50 
 
 1 
 
 1 
 
 Ky36-ll 
 
 83 
 
 22 
 
 80 
 
 70 
 
 93 
 
 9.6 
 
 52 
 
 
 
 4 
 
 Mo567 
 
 90 
 
 20 
 
 78 
 
 63 
 
 91 
 
 9.9 
 
 53 
 
 2 
 
 22 
 
 Mo572 
 
 82 
 
 21 
 
 78 
 
 80 
 
 90 
 
 10.1 
 
 54 
 
 1 
 
 10 
 
 Mo577 
 
 97 
 
 20 
 
 80 
 
 66 
 
 97 
 
 9.5 
 
 48 
 
 
 
 16 
 
 Oh7B. . 
 
 . 94 
 
 20 
 
 80 
 
 63 
 
 95 
 
 9.6 
 
 52 
 
 9 
 
 
 Oh29 
 
 95 
 
 19 
 
 79 
 
 68 
 
 96 
 
 10.4 
 
 53 
 
 1 
 
 30 
 
 Oh41 
 
 96 
 
 21 
 
 78 
 
 73 
 
 96 
 
 9.2 
 
 50 
 
 
 
 o 
 
 Okl2 
 
 94 
 
 23 
 
 80 
 
 74 
 
 96 
 
 9.9 
 
 54 
 
 
 
 
 
 T8 
 
 79 
 
 22 
 
 77 
 
 67 
 
 96 
 
 9.6 
 
 55 
 
 1 
 
 
 
 T202 . . . 
 
 . 96 
 
 21 
 
 80 
 
 77 
 
 96 
 
 9.2 
 
 54 
 
 
 
 4 
 
 CI.7 
 
 98 
 
 22 
 
 81 
 
 67 
 
 97 
 
 9.9 
 
 50 
 
 
 
 6 
 
 CI.21E 
 
 86 
 
 22 
 
 76 
 
 65 
 
 94 
 
 10.0 
 
 54 
 
 1 
 
 1 
 
 Miscellaneous 
 
 38-11 X K201. . 
 
 . 90 
 
 22 
 
 79 
 
 80 
 
 79 
 
 9.4 
 
 48 
 
 2 
 
 
 
 T8 X CI.21E 
 
 84 
 
 25 
 
 78 
 
 63 
 
 92 
 
 9.9 
 
 52 
 
 1 
 
 
 
 111. 1521 
 
 , 78 
 
 22 
 
 78 
 
 81 
 
 91 
 
 9.8 
 
 54 
 
 
 
 
 111. A 
 
 83 
 
 18 
 
 82 
 
 75 
 
 96 
 
 9.4 
 
 44 
 
 
 
 
 Average 
 
 86 
 
 22 
 
 79 
 
 69 
 
 95 
 
 9.9 
 
 53 
 
 1 
 
 7 
 
 Significant difference 
 
 17 
 
 
 
 
 
 
 
 
 
 60502-5043446 
 
UNIVERSITY OF ILLINOIS-URBANA 
 Q.630.7IL6B C002 
 
 BULLETIN. URBANA 
 529-5401948-50 
 
 30112019529350