1913] S]iaw : Studies on In fl^ieuces Affecting Protein Content of Wheat 73 



DISCUSSION OF 1906 EESULTS 



Examination of the 1905-06 results shows that in physical 

 appearance none of the seven originals carrying 100 per cent of 

 typical kernels (Group I) maintained their perfection in their 

 progeny — all showed some starchy kernels. The fact that those 

 grown at Modesto showed 97.5 per cent of typical kernels in 

 their progeny while those groAvn at Yiiba City showed but 60.1 per 

 cent very strongly suggests there must have been some local 

 condition of either soil or climate which influenced this change. 



The average protein content of this group at Modesto and 

 Yuba City decreased slightly, as did the percentage of typical 

 kernels, showing 13.15 per cent total protein in the originals and 



12.91 per cent in the progeny; while at Yuba City the results 

 were 12.52 per cent for the originals and 11.64 for the progeny. 

 It will be noted also that the Modesto samples possessed some- 

 what higher total protein as well as a larger percentage of typical 

 kernels than did those grown at Yuba City. 



Under Group II at Modesto the progeny showed an average 

 of 92.5 per cent of typical kernels from originals carrying abso- 

 lutely none, and a comparative protein content of 10.i)7 per cent 

 for the originals against 13.55 per cent for the progeny, or an 

 increase of 2.58 per cent. 



Group III at IModesto carried an average of 40.7 per cent 

 typical kernels in the originals and 96.6 per cent in the progeny, 

 and a protein content of 12.55 and 13.11 respectively, a distinct 

 increase in both respects. At Yuba City this group showed 62.9 

 and 69.5 per cent typical kernels in the originals and progeny 

 respectively, and a protein content of 12.07 per cent against 



11.92 per cent. 



Considered as a whole the results are expressed below : 



