-30 



Maine Agricultural Experiment Station. 1920 



A comparison of the two sets of data given in Table 6 shows 

 that the Minnesota lines when transferred into Aroostook and 

 grown there one season suffered a loss of only about o.8 per cent 

 of protein. If we further add that the original Minnesota grown 

 seed, when' analyzed for protein was considerably older, and 

 having a lower moisture content than the Aroostook progeny 

 grown from it, the latter's loss of 0.8 per cent of protein as com- 

 pared with the former becomes negligible. 



TABLE 6. 



Comparison of the Protein Content of the Minnesota Grown 

 Lines with that of their Aroostook Grown Progeny. 





Minnesota 



Accession N. S. N. Selected from 

 No. Variety 



Original Minnesota 

 grown seed 



Aroostook grown 

 progeny 



Maine 



Access. 



No. 



Nitrogen 



in 

 per cent 



Protein 



(Nx5.7) 



in 

 per cent 



Nitrogen 



in 

 per cent 



Protein 

 (Nx5.7) 



in 

 per cent 



182 

 186 

 183 

 184 

 185 



337 1-00-45 Speltz Marz (durum) 

 1037 1-12-1 Royalton (Red) 

 1011 1-15-161 Velvet Chaff 



470 1-00-52 Hedge Row (durum) 

 1037 1-12-6 Royalton (White) 



2.75 

 2.72 

 2.71 

 2.68 

 2.55 



15.68 

 15.50 

 15.45 

 15.28 

 14.54 



2.18 

 2.48 

 2.71 

 2.04 

 2.48 



12.43 

 14.14 

 15.45 

 11.59 

 14.14 



Average 

 Average 



(excluding durum lines) 



2.68 

 2.66 



15.30 

 15.17 



2.42 

 2.52 



13.79 

 14.36 



A consideration of the changes caused by the Aroostook 

 environment in the weight, size, shape of kernel as well as in the 

 protein content of the original Minnesota grown seed very 

 clearly indicates that the effect of the Aroostook environment 

 upon the Minnesota grown wheats is decidedly more noticeable 

 in the physical characteristics than in the crude protein content. 

 A very notable exception are the two durum lines. The Minne- 

 sota grown Speltz Marz heads the list of the Minnesota lines in 

 regard to protein content; at the end of one season's growth in 

 Aroostook this line shows the second lowest protein content of 

 all 99 lines analyzed. The second durum line, Hedge Row, suf- 

 fered an even greater loss in nitrogen — 3.69 per cent. By con- 

 trast, the Aroostook grown Velvet Chaff line shows a protein 

 content identical with that of the Minnesota grown seed, while 



