Self Sterility and Cross Sterility in the Apple. 



69 



Cross Fertility and Cross Sterility in the Apple. 



In table 3 are shown the results of crossing one variety 

 with the pollen of another variety. The first column records 

 the female variety and the second column the pollen variety. 

 In the column marked "Successful pollination" are recorded 

 the number of pollinations which produced mature apples. In 

 the column "Unsuccessful pollination" are recorded the num- 

 ber of flower clusters emasculated and pollinated. 



TABLE 3. 

 Cross Fertility and Cross Sterility in the Apple. 



Pemale Parent 



Pollen Parent 



Successful 



Unsuccessful 







Pollination 



Pollination 



Ben Davis 



Baldwin 



I* 



11 



Duchess 



Baldwin 





20 



Golden Russett 



Baldwin 





2 



Northern Spy 



Baldwin 



It 



12 



Red Astrachan 



Baldwin 





4 



Rhode Island Greening 



Baldwin 





2 



Baldwin 



Ben Davis 





4 



Golden Russett 



Ben Davis 



5 



9 



Hurlbert Sweet 



Ben Davis 



3 



7 



Mcintosh Red 



Ben Davis 





5 



Northern Spy 



Ben Davis 





2 



Rhode Island Greening 



Ben Davis 





2 



Ben Davis 



Canada Red 



5 



18 



Hurlbert Sweet 



Canada Red 



1 



1 



Ben Davis 



Crab 



9 



4 



Early Harvest 



Crab 





7 



Baldwin 



Duchess 



1 



9 



Early Harvest 



Duchess 



1 



1 



Red Astrachan 



Duchess 



1 



1 



Baldwin 



Golden Russett 



22 



5 



Ben Davis 



Golden Russett 



5 



40 



Northern Spy 



Golden Russett 





2 



Red Astrachan 



Golden Russett 





2 



Rhode Island Greening 



Golden Russett 





2 



Ben Davis 



Gravenstein 



3 



22 



Ben Davis 



Hurlbert Sweet 





11 



Early Harvest 



Hurlbert Sweet 





2 



Ben Davis 



Mcintosh Red 



40 



19 



Duchess 



Mcintosh Red 





4 



Early Harvest 



Mcintosh Red 





2 



Hurlbert Sweet 



Mcintosh Red 





4 



Baldwin 



Northern Spy 





2' 



Ben Davis 



Northern Spy 



10 



10 



Golden Russett 



Northern Spy 



3 



23: 



Ben Davis 



Opalescent 



19 



23 



Hurlbert Sweet 



Opalescent 





5- 



Mcintosh Red 



Opalescent 



2 



12. 



Baldwin 



Rhode Island Greening 





2 



Ben Davis 



Rhode Island Greening 





a 



Golden Russett 



Rhode Island Greening 





2: 



Northern Spy 



Rhode Island Greening 





2 



Ben Davis 



St. Lawrence 



3 



9' 



Ben Davis 



Wealthy 



9 



3, 



1 



*Not found until succeeding year when seeds were no good. 

 tHad six shrivelled seeds. 



