INHERITANCE OF ENDOSPERM COLOR IN MAIZE 
Table 4 
7^3 Progeny of White-Seeded F2 Heterozygotes {Z i^XZ 21) 
Plant No. 
White 
Yellow 
Total No Grains 
I W— 63 
269 
55 
324 
I W— 89 
294 
98 
392 
I W— 90 
119 
38 
157 
I W — 91a 
277 
122 
399 
364 
88 
452 
I W— 98 
233 
74 
307 
I W — 99 
298 
108 
406 
I W — loi 
298 
140 
438 
2 W— 66 
309 
75 
384 
3 W— 43a 
113 
48 
161 
3 W— 43& . 
190 
90 
280 
3 W— 48 
143 
70 
213 
3 W— 49 
119 
39 
- 158 
3 W— 52 
343 
104 
447 
3 W-53 
216 
56 
272 
3 W— 56 
59 
22 
81 
3 W-57 
417 
72 
489 
2 ¥—77^6 
212 
78 
290 
2 Y — 776^ 
245 
81 
326 
2 Y— 846 
185 
47 
232 
Total actually obtained 
4703 
1,505 
6,208 
Total theoretically expected 
4.656 
1,552 
6,208 
Both yellow and white endosperm colors varied markedly in this 
generation. In the case of white endosperm, the differences were 
largely due to segregation of factors affecting the texture and degree 
of translucency and opaqueness. Many ears had opaque caps, while 
the remainder of the endosperm was corneous. In such cases, the 
yellow was most apparent in the corneous region. Translucent whites 
such as one finds among popcorn varieties always appear slightly 
yellow when contrasted with opaque whites such as are found among 
the dent and wax varieties. No selfed ears were obtained of a deeper 
yellow color than that in the California Pop ancestor. The all yellow 
ears were of at least three distinguishable types: (i) a very light trans- 
lucent lemon yellow, (2) a yellow as dark as the ancestral yellow and 
(3) a yellow with opaque whitish caps. 
Unbagged Ears of Z 14 and Z 21 
Unbagged ears on plants of Z 14 grown close to varieties with deep 
yellow or orange endosperm color invariably have a large number of 
dark yellow or orange grains, from which the dominance of these 
* F2 seeds probably wrongly classed as having yellow endosperm. 
