90 



Bulletin 393 



6-5-5 indicates that the fruit contained three seeds, which in turn con- 

 tained embr}'os measuring six, five, and five millimeters, respectively. 

 The fruits in the different lots are arranged in order of their weight. The 

 weights of the spurs bearing the fruit are also given. The fruits in 

 each lot were produced on the same branch. 



TABLE 44. Weight of Fruit, Weight of Spur, and Length of Embryo 



The data show that in most cases the size of the fruit can be accounted 

 for by taking into consideration the weight of the spur and the length 

 of the embryos in the seeds. The fruit with the longest embryos will 

 usually be the heaviest if it is borne on the most vigorous spur. A fruit 

 may attain a good size on a relatively small spur if its seeds contain large 

 embryos. Conversely, a small fruit borne on a large spur is the result 

 of a small embr^^o. 



In this connection it should be noticed that a small spur may produce 

 a large fruit, and a large spur a relatively small fruit. These facts afford 

 additional evidence to show that the weight of the spur is not markedly 

 influenced early in the season by the fruit borne on it. 



That exceptions are found to the general rule is not surprising. One 

 could hardly expect that a single measurement would tell all about the 

 possibilities of the embr\'os for fruit formation. Some embrj'os are 

 pliimper than others even tho they are of the same length. Some have 



204 



