Variation and Correlation of Oats — Part I 



51 



The correlation between average weight of kernels per plant and average 

 number of spikelets per culm per plant (Figs. 55, 56, 57), determined for 





o 



6 



o 



CO 



1 



o 

 1 



o 



1 

 o 



o 



CO 

 1 



o 



o 

 1 



8 



o 



CO 



1 



o 



o 



o 

 o 



1 



8 



o 



3 



o 



o 



1 

 O 



1—1 





8.5- 9.5 





1 





1 

















•2 



9.5-10.5 









1 

















1 



10.5-11.5 



1 







1 

















2 



11.5-12.5 









1 



1 









1 







3 



12.5-13.5 









2 







1 











3 



13.5-14.5 





1 



3 



2 



6 



3 





2 









18 



14.5-15.5 





5 



10 



14 



22 



21 



11 



7 



2 







93 



15.5-16.5 





6 



18 



30 



33 



31 



30 



22 



8 



5 



1 



185 



16.5-17.5 





3 



10 



25 



31 



25 



26 



11 



4 



2 





138 



17.5-18.5 





2 



3 



8 



9 



6 



5 



3 



1 







38 



18.5-19.5 









2 



6 



2 



3 



2 



1 







16 



19.5-20.5 

















1 









1 



6 18 44 87 108 



76 48 17 



1 



500 



Fig. 



52. — Average weight of kernels per plant in milligrams, subject 



Average number of kernels per culm per plant, relative. 1909 

 Coefficient of correlation = .121 ± .030 





B 



o 



o 



o 



o 



8 



o 



05 



o 

 o 









^ 



s 



1 



s 



i 





i 



1 





11.5-12.5 













1 







1 



12.5-13.5 



1 



1 



1 





1 









4 



13.5-14.5 



2 





4 



4 



3 



3 







16 



14.5-15.5 





4 



8 



8 



14 



10 



4 



2 



50 



15.5-16.5 



2 



5 



14 



21 



15 



11 



4 





72 



16.5-17.5 



3 



9 



21 



36 



13 



15 



6 





103 



17.5-18.5 



3 



7 



26 



18 



19 



7 



3 





83 



18.5-19.5 





3 



10 



11 



10 



3 







37 



19.5-20.5 



1 



2 



3 



10 



1 



1 





1 



19 



20.5-21.5 





1 



6 



2 



1 









10 



21.5-22.5 



1 



1 



2 













4 



22.5-23.5 























23.5-24.5 







1 













1 



13 33 96 110 77 51 17 



400 



Fig. 53.- 



■ Average weight of kernels per plant in milligrams, subject 

 Average number of kernels per culm per plant, relative. 1910 

 Coefficient of correlation =^ —.172 ± .033 



