The Mode of Inlieritance of Semi-Sterility in the Offspring of Certain Hybrid Plants. 333 



Here we have 14 plants wliich were fertile, and 7 which were 

 semi-sterile. (The seeds and aborted ovules of LV-310, LV-392, and 

 LV-569, were however not counted.) 



The following table gives the results of the examination of the 

 pollen of the Fs progenies. 



Pedigree 

 number 

 of parent 



Plants Plants with 

 with sound i half aborted 

 pollen I pollen 



Pollen 

 not seen 



Plants 

 too late 



Seeds or 

 plants 

 dead 



Total 



Semi-sterile 



