INHERITANCE OF WAXY ENDOSPERM IN MAIZB. 73 
the expected ratio where two independent factors are required to 
produced a colored seed (Table X.X XII). 
TABLE XXXIII.—Correlation between the endosperm texture and the aleurone 
color of self-pollinated ears of maize having approximately 43.75 per cent of 
the seeds white in the second generation of the hybrid Dh 237. 
Pedigree No. of— Number of seeds. Percentage of— 
Self-pol- W+X.!} error. 
Progeny ear. linated | Total.| WX.| WH. | CX. CH. Waxy. | White. 
o. 
1 2 3 4 5) 6 7 8 9 10 11 
} 1738 ER epee oven See Self..... 664 94 190 42 338 0. 60 0. 045 21.0 42.75 
PAUSE Bea ee ea (0) 560 94 179 28 259 653 046 21.6 48.2 
NGS 38 Bepeeeecot| Gre do 595 93 163 45 294 577 046 23.2 43.0 
1 CY (a aS eee aA (OES do 658 96 163 51 348 601 033 22.3 39.3 
Motaless jel. tee ds 2,477 377 695 166 | 1,239 603 023 21.9 43.2 
The total number of seeds for the four ears are grouped as follows: 
Number of seeds. 
Class. CRIA OT el | ILEALER, CNL POMCI UE aan aT oR) Correlation. 
CH. CX. WH. | WX. 
CLES) ay 0 ea 2 Bs aU Sa 1, 239 166 695 377 0. 603+ 0. 0229 
Beepectedma.e tactics dees oot: Hee. OF EEE ROE” | Pee: 1,190 203 668 416 . 570 
The agreement is very close, the deviation of 0.033 being but 
slightly larger than the probable error, and none of the four ears 
comprising the group deviated in excess of twice the probable error. 
CORRELATION IN CROSSES BETWEEN THE TWO HYBRIDS DH 234 
AND DH 237. 
If the above explanation is correct and the association is between 
the factor for color C’ and horny endosperm Z/, a cross between the 
two first-generation hybrids should result in two groups of ears, one 
group all colored, the other group with four classes of seeds, but no 
correlation. Both these groups were obtained; the all-colored group 
has been previously discussed under aleurone color, and the progeny 
of three such ears are considered from the standpoint of correlations 
on pages 88 to 95. 
Nine ears were obtained with the hybrid Dh 234 as the female 
parent and eight ears were secured with the same hybrid used as the 
male parent. These 17 ears showed four classes of seeds, indicating 
that the plants of the hybrid Dh 237 were heterozygous for the 
color factor C as well as endosperm texture. None of the correla- 
tions are above 0.1, 9 being plus and 7 minus correlations. The 
two groups are shown in Table XXXIV. Together they aggregate 
10,032 individuals with a correlation of 0.0149+0.0166. 
