478 KePORT of the DEPARTi\[ENT OF HoRTirULTFRE OF THE 



portion should be 1 R: 2 R y: 1 Y, that is, one pure yellow 

 should have appeared to three pure and heterozygous reds. As 

 already noted in the JSTorthern Spy discussion, Kails is more 

 prepotent in the transmission of shape-determining factors. In 

 the Northern Spy and Ralls progeny, we have individuals both 

 larger and smaller than either parent — this variability may be 

 explained by assuming that the progenitors of Ralls and Northern 

 Spy covered variations of similar magnitude. The transmission 

 of acidity in Ralls is discussed under Northern Spy. 



Borne. — Little can be said as to the inheritance of the charac- 

 ters of Rome from the one individual grown. Its shape and 

 stem cavity were transmitted to this seedling. 



Sutton. — This variety gave three reds and two nearly yellows 

 when crossed with Northern Spy. Thus Sutton as well as the 

 Spy must carry either yellow or a simple red. In the transmis- 

 sion of shape, Northern Spy seems to be sightly prepotent, for it 

 impressed its shape on three fruits to the Sutton's one. Little 

 can be said of the transmission of size except that the Sutton 

 did not give small fruits. The transmission of flavor in Sutton 

 is discussed under Northern Spy. 



Conclusion. — The inheritance of skin color, flesh color, size 

 and shape are more or less hypothetical but acidity is undoubt- 

 edly inherited as a ]\Iendelian character. Combining crosses, 

 all of which were produced from subacid parents, we get a total 

 of 22 sweet, 82 subacid and 2 acid apples. Fifteen of these are 

 from crosses in which sweetness is not carried by one or both 

 parents, and, therefore, must be eliminated, thus leaving 22 

 sweets to 69 subacids and acids, numbers which approach very 

 closely the theoretical 1 :3 ratio. If the sweet apples contain a 

 higher amount of sugar than the subacid apples, and this assump- 

 tion is favored, the results are analogous to those obtained by 

 Pearl and Bartlett with crosses of corn^ where high sucrose 

 content behaved as a recessive to low sucrose. 



CONCRETE RESULTS. 



All will be interested, it is certain, in knowing how many 

 of the progeny of these crosses seem to the writers to have sufli- 



1 Pearl, R. and Bartlett, J. M., 1911. Ztschr. Induk. Ah/<tamn>. Trrrh. 

 6: 27. 1911. 



