26 



BULLETIN 209, IT. S. DEPARTMENT OF AGRICULTURE. 



Table VI. — Varieties of American native and Franco-American grapes under test on 

 their oivn»roots at eleven experiment vineyards in California — Continued. 



Varieties. 



c 



5 



| 



"o 

 O 



d 

 a 



u 

 a> • 



XT * 



C3 







■3 



o 



h3 



a 



M 



O 



03 



a 



o 



a 

 o 

 m 



B 



p 



s 



o 

 o 



tfi 





+ 



+ 



+ 

 + 

 + 

 + 



+ 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 +. 





















+ 

















+ 













































+ 







Little Blue 



































































+ 



+ 





























































+ 



+ 

 + 











+ 

 + 





+ 









+ 

































































Maxatawney 

























+ 











+ 



+ 



































































+ 



+ 



+ 





+ 



+ 



+ 



+ 



+ 

















+ 

















+ 





















+ 







+ 





+ 



















+ 









































Olita 









































































+ ' 







+ 









+ 



Peabody 













+ 

 + 







Pearl 























+ 



























+ 

 + 



+ 





+ 







+ 

 + 

 + 







Plant de Cannes 



+ 







+ 



+ 

















Poc Islington 



+ 

 + 



4- 

 + 

 + 



+ 



+ 

 + 

 + 



+ 





































+ 









+ 







+ 

















+ 





+ 











Red Eagle 















































































Rogers: 























No. 13 

















+ 







No. 32 





















Rommel 

















+ 





+ 









+ 













Shalah 













+ 











Wyoming Red 



+ 









































To grow vines on resistant stocks successfully, it should be borne 

 in mind that the resistance of vines depends upon the inherent 

 characters of the vine and its adaptation to soil, climatic, and other 

 conditions, and that the resistant quality of the stock is very mate- 

 rially affected by the congeniality of the varieties grafted on it. 



CONGENIALITY AND ADAPTABILITY OF VINES. 



Two vine varieties are congenial to each other if both top and 

 root flourish when one is grafted on the other. (See PL X, fig. 1.) 

 The congeniality would be called perfect when one variety grafted 

 on another behaves as if the stock were grafted with a scion of itself, 

 the union being perfect and the behavior of the vine the same as 

 that of an entire ungrafted plant 



