INFLUENCE OF STOCK ON CION 



157 



crabapple commonly used as the stock for apples, is not 

 a particularly large tree; yet in many cases if not in all, 

 the more vigorous cions have stimulated the root system 

 of the stock to a larger size than it would normally grow. 



FIG. 73. A Tree from the Same Orchard as Fig. 72. Measures 

 six feet six inches above and nine feet seven inches below, 

 making a difference in circumference of three feet one inch. 



Peaches grafted on Myrobalan plum stock produce a larger 

 root system than would develop if ungrafted. 



Occasionally, instances are cited where both stock and 

 cion are stimulated to a growth far greater than either 

 would develop by themselves. Almonds grafted on peaches 

 have developed a circumference of a little less than ten feet 

 (Fig. 72), while the maximum size of either, growing alone, 



