S. C. Harlani) 



209 



The ^3. Of 21 families grown from F^ plants with bloom, 10 bred 

 true (230 plants). 



11 families segregated into bloom and no-bloom. 



Of 10 families grown from F^ plants with no-bloom, all bred true 

 (217 plants). 



Back crosses of F^ plants with the no-bloom parent. 



The conclusion previously arrived at by White and the present 

 writer that presence and absence of bloom form a simple Mendelian pair 

 of characters is confirmed by the above results. The symbols B and b 

 will be used to denote presence and absence of bloom respectively. It 

 will be noted that there is a marked excess of dominants in the Fn 



