Variation and Correlation of Oats — Part II 



173 



Series 100 



4 



i 



O GO O C<J ■* 

 (M (M (M 



S ^ g^ Totals 



4 ci 



5 34 7 



















20 42 



15 

















25 



30 



15 



4 



2 











3 



13 



12 



11 



6 













2 



2 



5 



6 



6 



3 











1 





6 

 4 



7 

 2 



1 



3 



1 

 1 



1 



4 



1 



0-1 

 1-2 

 2-3 

 3-4 

 4-5 

 5-6 

 6-7 

 7-8 

 8-9 



Totals 5 54 77 60 30 20 24 16 8 







46 

 77 

 76 

 45 

 24 

 18 

 11 

 1 

 2 



300 



Fig. 140. — Correlation behveen average yield of culm per plant, in 

 decigrams, subject; and average number of spikelets per culm of 

 . plant, relative 



r = .885 ± .008 



The difference in each case amounts to less than three times its probable 

 error. Degrees of crowding, then, have little effect on the correlation 

 between yield and number of spikelets. 



Series 122 



(N ■* CO 00 



o (^^ 4< CO 



Totals 



0-1 



29 48 1 











78 



1-2 



34 51 



11 









96 



2-3 



1 34 



26 



11 







72 



3-4 



5 



11 



11 



7 



3 



37 



4-5 







2 



7 



2 1 



12 



5-6 







2 



1 



1 



4 



6-7 









1 





1 



Totals 29 83 91 48 26 16 6 1 



300 



Fig. 141. — Correlation between average yield of 

 culm per plant, in decigrams, subject; and average 

 number of spikelets per culm of plant, relative 



r = .851 ± .011 



I 



