STUDIES ON OAT BREEDING. 



137 



whorls, the number of spikelets in the lower whorl, and the 

 length of the longest branches in the lower whorl. 2 * 



Line 355 which leads the list as to yield ranks also highest 

 with regard to all these head characters, while line 247 occupies 

 the lowest rank of the table. 



The lines 355 and 307 of the Banner variety show the highest 

 values for the length of head and for the length of the longest 

 branch in the lower whorl. This correlation of the longest 

 branch in the lower whorl is also illustrated by Line 351. 



Table 10. 

 Data on Certain Straw and Head Characters. 













































a 



'3 



is 



03 



03 



II 



eu 



m 



oTi 



o 



Line 

 number. 



Parent Variety 



a 



o 



. <*> 





o.2 



go 



O 





a . 



3 TO 







2 . 



.spa 



a 



■P 



M 



a 





a-" ■ 



03 tiTl 



6 



°o 



3! 







a§ 



Q 



i-l 



HJ3 p£ 



R-2is 



£ 



&.s 



C* GO 







cm. 



mm. 



cm. 



cm. 



cm. 









Maine 355 





138.6 

 132.9 

 132.5 

 133.9 



41.3 

 39.4 

 41.7 

 40.4 



22.0 

 21.2 

 20.5 

 20.7 



12.4 

 12.6 

 12.0 

 11.7 



5.9 

 5.6 

 5.7 

 6.0 



6.0 

 5.7 

 5.4 

 5.6 



10.8 



10.3 



9.8 



10.1 



37.3 



307 





33 6 



351 





32.4 



340 





32.1 



336 





138.6 



41.3 



21.0 



11.3 



5.7 



6.0 



8.3 



32.8 



346 





133.9 



42.9 



20.6 



11.7 



5.6 



5.8 



10.5 



33.4 



247 



Imported Scotch 

 Average. . .'. 



133.7 



40.4 



19.7 



10.9 



5.3 



5.0 



9.9 



30.4 





134.9 



41.1 



20.8 



"" 



5.7 



5.6 



10.0 



33.2 



GRAIN CHARACTERS. 



With pure lines selected chiefly for high yielding ability out 

 of only three more or less related commercial varieties the grain 

 will naturally not show many striking botanical characters that 

 would serve as a basis for classification. Furthermore, the 

 three groups of the pure lines resemble in respect to external 

 grain characters their respective parent varieties so that the 



24 It is realized that the material from which these data have been ob- 

 tained is comparatively small and that the analysis of ? large number of 

 plants would bring out these relations more clearly and smooth out the 

 irregularities. 



