GKAIN-SOEGHUM EXPEEIMENTS IIST THE PANHANDLE OP TEXAS. 



61 



between the two is in height. The original head row of No. 30 in 

 1907 was heterozygous for stature, but of six head rows grown from 

 it in 1908, two were uniformly dwarf and probably inherently so. 



In 1909, 10 head rows were grown from seed of row No. 340-1 of 

 1 908. All the rows were uniformly dwarf and early. To test the purity 

 of this progeny in regard to dwarf stature, 10 heads were selected 

 from the tallest of the dwarf plants and 10 from the lowest. The 

 average difference in the height of the two sets of parents was about 

 6 or 8 inches. In 1910 the seed from each lot of heads was used to 

 sow 10 head rows. There was absolutely no difference in the progeny 

 of the two lots called, respectively, Nos. 340-1-Ad and 340-1-At. 



Fig. 10.— a plat of Dawn (Dwarf) kaflx, C. I. No. 340, at the Amarillo Cereal Field Station, August 17,1915; 



yield, 68.3 bushels per acre. 



For six generations since, or nine in aU, this race has bred true for 

 dwarf stature and earliness. A plat of Dawn kafir grown at 

 Amarillo, Tex., in 1915, is shown in figure 10. 



The number of plats grown in each year in the 9-year period 

 has varied from 1 to 3, the total number being 17. Selection has 

 been practiced within this race in the hope of obtaining still lower 

 stature or earher maturity, but without special success. The results 

 of the experiments conducted are shown in Tables XX and XXII , 

 and the annual and average yields of this selection are compared 

 with those of other kafirs in Table XXX. 



Besides being more dwarf than the ordinary Blackhull kafir, the 

 Dawn kafir is also a little earlier, as will be seen in Table XXII. In 

 1908, when all varieties developed normally, the difference was 



