» 



Variation and Correlation of Oats — Part II 



Series 1257 



Totals 12 19 23 27 32 27 28 15 21 18 22 9 12 7 18 4 2 1 



137 





■^ 



00 



Ol 



o 



o 



•<i< 



00 



IN 



CO 



o 



T)< 



00 



IN 



CO 



o 



•* 



00 



N 



CO 



Q 



ja 













(N 



<N 



(N 



C5 



^^ 



T)( 



■* 



•* 



lO 



>o 



CO 



CO 



CD 



r- 



t> 



. 00 



c: 





i 



1 



00 



i 



-J. 



O 



■* 



M 



(M 



o 



o 



■* 



00 



IN 



ci 



i 



4. 



00 



1 



IN 



1 



o 



o 













'^ 



<N 



(N 



C^ 



CO 



M 



Tt< 



■* 



Tt" 



lO 



lO 



CO 



CO 



CO 



t^ 



t^ 



H 



5- 6 











1 

































1 



6- 7 





1 



1 





































2 



7- 8 



2 



3 



2 





1 









1 

























9 



8- 9 



3 



1 



1 



2 





1 













1 



















9 



9-10 





1 



2 





2 





1 







1 























7 



10-11 



3 



4 



3 



2 



4 





4 





2 



2 





1 





1 















26 



11-12 





3 



5 



4 



7 



7 



4 



1 



2 



1 







1 





2 













37 



12-13 





1 



2 



3 



9 



5 



5 



4 



5 



3 



5 





2 





2 













46 



13-14 





2 



4 



6 



2 



7 



7 



2 



2 



2 



4 



4 



2 



3 



4 









1 





52 



14-15 



2 



2 



1 



4 



5 



2 



2 



2 



3 



5 



5 



2 



3 



2 



3 



1 



1 



1 







46 



15-10 



1 







4 



1 



1 



3 



6 



5 



2 



3 





3 



1 



2 



1 









2 



35 



16-17 



1 





2 







1 







1 



1 



5 



1 



1 





5 





1 









19 



17-18 





1 





2 





3 



2 







1 













2 











11 



300 



,FiG. 113. — Correlation between average weight of kernels per plant, in milligrams, subject; and 

 average number of kernels per culm of plant, relative. Sixty Day 



r=.415=b.032 



There are some slight differences observable m the coefficients here 

 determined, which may be mentioned as possiblj^ having some varietal 

 significance. The highest correlation coefficient is fomid in series 1238 

 in four out of seven comparisons, and m the remaining three cases it is 

 high. In no case is it the lowest. In three out of seven cases, series 1200 

 has the highest coefficient, and once it has the lowest coefficient. Series 

 1219 has the lowest coefficient in six out of seven cases. One would 

 expect, then, to find in the Welcome variety of oats relatively high cor- 

 relation between all characters here used in correlation studies. In the 

 Great American variety there is relatively high correlation when average 

 weight of kernels per plant is one of the characters considered, and relatively 

 low when jaeld is correlated with weight of straw, although the coefficient 

 is very high in the latter case. In the Early Champion variety relatively 

 low correlations may be expected when practically all the characters here 

 concerned are correlated, but especially when average weight of kernels 

 is a factor. The coefficients themselves, however, are high. The Sixty 

 Day variety seems to occupy an intermediate position as regards correla- 

 tion of the characters under consideration. 



The differences between the coefficients of correlation for the same 

 characters determined for the different varieties are assembled m 

 Table 6: 



