The Endosperm in Inheritance 157 



the phenomenon of triple fusion. On the other hand, 

 this type of inheritance indicates that the triple fusion, 

 so far from being an unimportant cytological process, 

 is really significant. 



It may be questioned why the other endosperm 

 characters are not inherited in this way, as for example 

 aleurone colors, just as well as floury and corneous 

 characters. The question cannot be answered satis- 

 factorily, any more than it can be explained why some- 

 times there is complete dominance and sometimes 

 only partial dominance. All that can be said is that 

 corneous and floury characters appear to be inherited in 

 a different way from endosperm colors, where the 

 presence of one color factor is sufficient to cause the 

 complete determination of color. 



1. EAST, E. M., and HAYES, H. K., Inheritance in maize. Conn. 

 Agric. Exper. Sta. Bull. no. 167. pp. 142. pis. 25. 1911. 



2. HAYES, H. K., and EAST, E. M., Further experiments on 

 inheritance in maize. Conn. Agric. Exper. Sta. .Bull. no. 188. 

 pp. 31. pis. 7. 1915. 



3. WEBBER, HERBERT J., Xenia, or the immediate effect of 

 pollen in maize. U.S. Dept. Agric. Bull. no. 22. pp. 44. 

 pis. 4. 1900. 



