LUTHER BURBANK 



lect, were lacking in virility and produced no blos- 

 soms. The similar case of the motley hybrids 

 made by crossing various members of the rose 

 family with their cousin the dewberry will be re- 

 called. Also the strange progeny of the straw- 

 berry and the raspberry. 



The Chinese-European hybrid quince, then, in 

 its dwarfed growth and its sterility merely illus- 

 trates the principle of growth that we have pre- 

 viously seen manifested with various other plants. 



But the extreme dwarfness of the progeny gives 

 an element of added interest. It would be worth 

 while, could time be found for it, to make more 

 extensive hybridizing tests along the same lines. 

 Possibly some other strains of the two species 

 than those employed might prove to have slightly 

 greater affinity. In that case it is conceivable that 

 a new race of quinces might be produced that 

 would bear fruit of a new character and give us 

 an interesting and perhaps valuable addition to 

 the rather small list of orchard fruits. 



In this connection I may refer again to the ex- 

 periments in which I hybridized the quince and 

 the apple, and to others in which the quince and 

 pear were similarly united. The story of these 

 experiments has been told in earlier chapters, and 

 no detailed account of them need be given here. 

 It suffices to repeat that the hybrids in each case 



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