No. 626] 



FACTOR RELATIONS IN MAIZE 



243 



sible to tell which was plant and which was sucker, so 

 that the same plants may have been included in the count 

 more than once. 



The figures for the segregation with respect to the tuni- 

 cate character together with the figures from a similar 

 ear, which instead of segregating starchy and sweet seg- 

 regated for yellow and white endosperm, are given as 

 follows: 



Foun.l 75 153 I S7 



Expect e l 79 , 158 | 79 



With regard to tliis second ear, which was similar to 

 the first except that it was crossed with yellow, starchy, 

 non-tunicate instead of white, sweet maize, it is to be 

 noted that tliere is no indication of linkage between the 

 factors for tiiiiicato oar and yellow oiulosperm. The fig- 

 ures ohtaiticd cotn ) >ar(M 1 to \]\o cx] xM-tancv- are given 

 herowitli : 



Factors 



Another case of linkage is suggested by the results of 

 Kast and TTayes (V.m) in the inheritance of aleurone 

 <'oloi'. From cro^-c- of colorlc^- alcnroiif b\ purple they 

 obtaiiUMl iiinrkcd drviat ioii^ \'vo\\\ the cxpivted ratios 

 which llioy could not. account lor. At that time the first 



