No. 624] 



INHERITANCE OF HULL-LESSNESS 



27 



The three parent series from which these were taken 

 were of three types as mentioned before, therefore the 

 parent plants selected from them carried the tendency to 

 produce high or low as the case may be, and when they 

 are all arranged in a correlation table naturally a high 

 coefficient is obtained. In other words, the three i)ar(']it 

 forms were more nearly homozygous, so to speak, for 

 high or low values. More will be said on this point later. 



This relationship was further showTi by means of a 

 graph showing the relation between the parent percent- 

 age condition and the average value for the offspring, 

 the same as was done in Fig. 7. 



In this case the relationship is higher than in the 

 former series. The equation to the straight line is 

 2/ = 17.2411 + 3.206237. 



That the plants arising from heterozygous plants hav- 

 ing a low or high percentage of hulled kernels did not 

 segregate in a manner indicating any influence of the 

 hulled condition of the parent plant, as was the case to 

 some extent with series 202, is sho^\^l in Table VIII. 



It is clca 

 seem to mt 

 concerned. 



