110 MANUAL OF TROPICAL AND SUBTROPICAL FRUITS 



race of Florida identical with the common mango of the West 

 Indies, Mexico, and Central America. He was not able to 

 determine whether the egg-cell develops into an embryo, or 



whether all of the em- 

 bryos are adventitious, 

 the egg-cell being 

 crowded out or de- 

 stroyed in some other 

 way. If the fertilized 

 egg-cell develops and is 

 represented in the ma- 

 ture seed, the plant 

 arising from it should 

 exhibit variation; but 

 the seedling races are 

 so constant that it 

 seems probable that 

 the egg-cell is lost at 

 some stage in the de- 

 velopment of the fruit, 

 and that all of the em- 

 bryos are normally 

 adventitious. There 

 is as yet no proof, 

 however, that fruits 

 will develop on this or 

 other mangos unless 

 the flowers are pol- 

 linated. The subject 

 is an important one 

 and will repay further investigation. 



It has been observed in Florida that monoembryonic grafted 

 varieties, such as Mulgoba, will, when grown from seed, some- 

 times revert to polyembryony in the first generation (Fig. 10). 



FIG. 10. Seedlings of grafted Indian mangos 

 usually do not produce fruit exactly like the 

 parent. Each of the fruits here shown repre- 

 sents a tree grown from a seed of the Mulgoba 

 mango. The variations in size and shape of 

 fruit, and in the amount of fiber around the seed, 

 are noteworthy. (X |) 



