364 



THE CANADIAN HORTICULTURIST. 



is, if we wish to use Satsuma as a pollinizer 

 for Coe Golden Drop, or Lombard for Wild 

 Goose, the probability is that the combina- 

 tion would work, if the two varieties bloom 

 together ; but since the three groups usually 

 bloom at somewhat different periods there 

 be no general cross-pollination outside the 

 limits of the species. 



Numerous crosses and common orchard 

 practice have also shown that the European 

 pears, as Bartlett, and the Sand Pear hybrids. 



Fig 1900, compare the size of the Seckels 

 which received Kieffer pollen with those 

 which had Lawrence pollen. The specimens 

 shown are typical of thirty fruits secured 

 from these two crosses in 1899. 



It is necessary to study not only the mutual 

 affinity of varieties belonging to different 

 species, but also of varieties of the same 

 species. Some varieties will not fertilize 

 each other, though blossoming at the same 

 time. Kerr has found that Whittaker plum 



Fig. 1900. — Seckel. From Kieffer Pollen Above, From Lawrence Pollen Below. 



as Kieffer, will fertilize each other regularly 

 when they bloom together. Several Kieffer 

 fruits from Bartlett pollen and Bartlett fruits 

 from Kieffer pollen were secured in the cross- 

 ing work of 1899. In fact, my experience 

 has been that if Kieffer pollen is put on the 

 pistils of our common pears, of the Euro- 

 pean class, it will usually produce larger 

 fruit than pollen from most varieties of that 

 type. Kieffer is a good pollinizer for Bart- 

 lett, Angouleme, Clapp, Nelis and the like 

 varieties, when they bloom together. In 



will not fertilize Wild Goose nor will Early 

 Red help Caddo Chief. Again, the pollen of 

 some varieties will give better fruit than that 

 of others when used on the pistils of self- 

 sterile or even on self-fertile varieties. There 

 is very little definite knowledge as to what 

 varieties are best adapted for pollinating self- 

 sterile sorts. Waugh and Kerr have studied 

 this point with native plums for several years 

 and their judgment is united in a table of 

 recommended pollinizers for plums (12th 

 Report Vt. Ag. Ex. Sta.) A few results 



