1 32 



lock: studies in plant breeding 



F3. 



Grains from No. 1 of Table 27 were sown and pollination 

 was effected from plants of G. W. S. Only a few good plants 

 were obtained. In tbe following table tbe plants (a) were 

 derived from black grains, (b) from white. The results are 

 in accordance with those already described for each pair of 

 similar characters taken separately, except as regard the pau- 

 city of starchy grains on the (b) plants. Upon these a few 

 grains were intermediate in appearance between typical dent 

 and typical sugar grains ; such grains were counted as sugary 

 hut possibly not quite all of them were really of this nature. 

 Out of 85 supposed sugary grains grown in F 4 (pollination 

 again from G. W. S.) only one yielded a cob bearing both 

 starchy and sugary grains, whilst the remaining 84 gave 

 nothing but sugary. 



\iuong plants (a), a certain number of the yellow grains 

 were distinctly paler than the others, and it appeared from 

 an examination of the next generation that these belong more 

 properly to the " white " than to the " yellow " group. The 

 appearance of these grains causes the white group to grade into 

 the yellow to some extent, and consequently the figures for 

 white and yellow are not fully trustworthy. 



Table 28. 



F4. 



G .mi- representing all the combinations <>f characters 

 sown i>\ in) i m| Table 28 were Bown. Pollination was once 



