488 



Plant Physiology 



somes, in which association, particularly, mutual character 

 influences may find explanation ; and (2) separation of 

 the previously associated chromosomes (members of a 

 pair), one to each of two daughter nuclei, thus segregating 



FIG. 139. Hybridization of tomatoes : same fruits as shown in preced- 

 ing figure, in section. [Photograph by H. L. Price.] 



maternal and paternal characters. A comprehensive 

 discussion of cytological relations is entirely beyond the 

 scope of this work. 



299. Selection. - - Selection of forms for hybridization 



