THE AMERICAN NATURALIST [Vol. XLVIII 



The principal facts of interest here are the production 

 of only one red-eared plant to about 140 variegated-eared 

 ones from narrow- striped seeds, and of about one red- 

 eared to two variegated-eared plants from seeds with 

 from one half to perhaps three fourths red. 



Of 20 variegated ears, heterozygous for pericarp color, 

 that were crossed with pollen from pure non-colored 

 strains, 5 had only narrow- striped grains and 15 had 

 variously broad-striped grains and even some self-red 

 ones. The summaries of these crosses are as follows : 



Here again, just as with homozygous, variegated ears, 

 the more red there is in the pericarp the more likely are 

 the female gametes to carry a factor for self-red. While 

 the number of individuals dealt with are too few to afford 

 reliable evidence, it is suggestive to note that the ratio of 

 red-eared to variegated-eared plants, though not the ratio 

 of red-eared to total plants, is greater in case of parent 

 ears that are heterozygous than of those that are homozy- 

 gous for variegated pericarp. 



So far nothing has been said of the results in genera- 

 tions later than the one grown from the selected seeds 

 (FJ. Let us now see what results follow when the varie- 

 gated ears and the red ears produced as explained above 

 become the parents of second generations (F 2 ) from the 

 selected seeds. The variegated ears so produced behave 

 like the original variegated ears from which seeds were 

 selected and their progenies have, therefore, been included 

 in the data already presented. There remains only to 

 present the records of the progenies of red ears. 



Data are available from 7 F t red ears obtained from 

 self-pollinated, homozygous, variegated plants. Five of 



