INHERITANCE OF ENDOSPERM COLOR IN MAIZE 399 
Collins (2) reports a dominant white (albinistic) mutation in en- 
dosperm color. The mutation consisted of a single, wholly white 
ear which appeared in a field of a carefully selected strain of dark 
yellow dent with red cobs known as Gorham Yellow Dent. 
The "albinistic" ear was fully matured, had white cobs, and the 
seeds when closely examined had a faint trace of yellow at the base, 
but would ordinarily be regarded as pure white. This white was 
evidently "dominant" over the Gorham Dent yellow, since the original 
mutant ear must have been in part, at least, cross-pollinated from the 
surrounding plants — all of which were Gorham Dent. The immediate 
descendants of this ear, either when selfed or cross-pollinated, con- 
sisted of both yellows and whites, the former greatly predominating. 
The yellows consisted of both dents and pale types, the former being 
the more numerous. Seeds of the three color types were grown. 
From 19 white seeds, 17 all white self-pollinated ears and two white 
tinged yellow ears were obtained. From 16 light yellow seeds were 
obtained 2 very light yellow ears, 1 1 ears with light yellow and white 
seeds approximating in many cases a 3 Y : i W ratio, i ear with dark 
yellow and white seeds approximating a 3 : i ratio, and 2 ears un- 
classified. Forty-nine dark yellow seeds produced 16 ears with yellow 
of varying shades, 22 ears with both yellow and white grains in the 
ratio of 3 : I (8,694 Y • 2,954 W), 4 ears with both yellow and white 
grains in the ratio of 15 Y : I W (2,548 Y : 177 W — theoretically 
expected 2,555 Y : 170 W), and seven ears with all shades from dark 
yellow to white. Crosses between a second generation progeny plant 
from the albinistic ear (presumably heterozygous for yellow and white) 
(no. 47) with two white seeded varieties of corn, in both cases gave 
ears with both white and yellow grains — the ratios approximating 
1:1. Selfed yellows (44 seeds) from various ears of the first cross 
(no. 47 X White Dent) gave yellows and whites approximating a 
ratio of 3 Y : i W (44 ears with 16,351 Y : 5,184 W, theoretically 
expected 16,151 Y : 5,384 W). Selfed yellow seeds from the second 
cross (no. 47 X white Hopi) gave 2 ears with both yellow and white 
seeds, the yellow predominating and one ''pure white ear.'' Seeds 
of the selfed pure white ear gave 5 pure white ears and 4 faint yellowish 
tinted white seeded ears. No data are given as to cob color in the 
case of the second appearance of a white endosperm mutation, nor in 
the case of the dozen or more pure white ears obtained in later gene- 
rations. Since both the white cob and white endosperm appeared 
