Variation and Correlation of Oats — Part I 



37 



some being much less important than others, and the average yield of 

 those making up a plant is therefore not related absolutely to, the total 

 yield of the plant. 



The correlation between total yield of plant and total number of kernels 

 per plant (Figs. 28, 29, 30, 31), determined for four years, varies from 



rt T-H (M 



ioiiiiooooiQcio 



iQO'OO'OO'OO'OOiOO 



0- 1 



20 



4 



1 





















25 



1- 2 





31 



30 



1 



















62 



2- 3 







37 



58 



1 

















96 



3- 4 









29 



59 



8 















96 



4- 5 











20 



47 



14 













81 



5- 6 













3 



34 9 



1 











47 



6- 7 















1 21 18 













40 



7- 8 















12 



15 



4 









31 



8- 9 

















1 



8 



1 







10 



9-10 



















1 



1 







2 



10-11 





















1 2 



2 





5 



11-12 























1 



1 



2 



12-13 

























1 



1 



13-14 

























1 1 



2 



20 35 68 



80 58 49 30 30 17 13 



500 



Fig. 29. — Total yield of plant in grams, subject 



Total number of kernels per plant, relative. 1909 

 Coefficient of correlation ^ .977 ± .001 





i 





i 







CO 



CO 



CO 





1 





0-1 



2 



1 



















3 



1-2 





20 



30 

















50 



2-3 







61 



45 















106 



3-4 







4 



47 



51 



7 











109 



4-5 









4 



30 



39 



7 









80 



5-6 













12 



26 



4 







42 



6-7 

















3 



4 





7 



7-8 

















1 





1 



2 



8-9 





















1 



1 



2 21 95 96 81 58 33 8 4 2 400 



Fig. 30. — Total yield of plant in grams, subject 



Total number of kernels per plant, relative. 1910 

 Coefficient of correlation =^ .918 ± .005 



