Wheat Investigations. 



21 



■while the Preston lines, with the exception of the few strains 

 of the Unnamed variety, rank highest. The great variations in 

 the i ooo-kernel- weight of the individual strains grown in the 

 same season on a limited, uniform piece of land, are rather note- 

 worthy. It is further of interest to note that the lines with the 

 very high weight per iooo kernels as a rule yielded flour of 

 poor baking quality. The Hues that produced the largest bread 

 volume were those with a i ooo-kernel- weight not over 35 grams. 

 Table 3 shows the remarkable effect exerted by the Aroos- 

 took environment upon the weight of kernels of the Minnesota 

 lines. 



TABLE 3. 



Showing Effect of Aroostook Growing Conditions Upon the 

 Weight of Kernel of Pure Lines Introduced from Minnesota. 



Maine Minnesota 

 Acces- Accession 

 sion No. No. 



N. S. N. 



Weight in grams per 1000 kernels 



Selected from 

 Variety 



of original seed 

 grown in Minne- 

 sota 



of the same seed 



grown one season 



in Aroostooi 



183 1011 I 1-15-161 Velvet Chaff 

 186 1037 1-12-1 Roya'.ton (Red) 

 185 1037 1 1-12-6 Royalton (White) 



181 188x188 ,11-06-39 Preston x Preston 



184 470 ! 1-06-52 Hedge Row (durum) 



182 337 ' 1-00-45 Speltz Marz (durum) 



19.788 



32.891 



22.000 



34.315 



20.923 



35.105 



22.268 



37.241 



37.411 



43.104 



37.386 



45.510 



Average 



Average (excluding the 



durum lines) 



26.629 

 21.244 



38.028 

 34.888 



The average weight per iooo kernels of the original seed 

 has increased by 18.7 per cent in the course of one season. It 

 should, however, be stated that at the time of the determination 

 of the 1000-kernel-weight the original Minnesota grown seed 

 was older and therefore drier than the Aroostook grown seed 

 and considerably shriveled, so that the actual difference in weight 

 should probably be smaller. On comparing the data in Table 

 3 with those in Table 2 it will be seen that the average weight 

 per iooo kernels of the Aroostook lines is practically identical 

 with the average weight of the Minnesota lines attained under 

 Aroostook conditions. These data which very well agree with 



