Variation and Correlation of Oats — Part II 



187 



Series 102 





«5 



4 



00 



o 



M 



1 



1 



CD 



4 



CO 



1—1 



g 



^ 



^H 







1 



GO 

 <>« 



ci 



o 

 CO 



Tot 



0-1 



3 



8 



16 



15 



17 



3 



1 















63 



1-2 









1 



21 



27 



23 



5 



1 











78 



2-3 













5 



16 



17 



15 



4 



1 



1 





59 



3-4 

















7 



15 



14 



2 



2 





40 



4^5 

















2 



4 



15 



8 



3 





32 



5-6 





















5 



5 



1 



2 



13 



6-7 





















1, 



4 



9 





14 



7-8 

































8-9 

























1 





1 



Totals 



8 16 16 38 35 40 31 35 39 20 17 



300 



Fig. 161. — Correlation betiveen average yield of culm per plant, in 

 decigrams, subject; and diameter of straw, in decimillimeters , relative, 



r= .878 ± .009 



be of some importance. It seems that, up to a certain point, as crowding 

 increases the correlation between yield and diameter of straw increases, 

 and that beyond this point there is a decrease in correlation. 



Series 118 









--1 



-H 



--1 



■-1 



--1 



Oi 



c^ 



CV) 



(M 







'i^ 



o 



GO 



O 

 I— 1 



CVl 



M^ 



o 



00 



r-H 



§ 



CM 





Tota 



0-1 



11 



37 



52 



34 



15 



4 













153 



1-2 









12 



40 



25 



8 







1 





86 



2-3 













2 



19 



15 



4 







40 



3-4 

















7 



8 







15 



4-5 



















2 



3 





5 



5-6 























1 



1 



Totals 11 37 52 46 55 31 27 22 14 



1 



300 



Fig. 162. — Correlation between average yield of culm per plant, 

 in decigrams, subject; and diameter of straw, in decimillimeters, 

 relative 



r= .871 ± .009 



Comparing average yield of culm per plant and breaking strength of 

 straw (Figs. 163 to 168), it is seen that there is again a significant differ- 

 ence in correlation produced by crowding. In both lines the lowest 



