Variation and Correla.tion of Oats— Part I 



43 



i 



0- 1 



7 7 



7 



3 



1 











25 



1- 2 



1 19 



23 



15 



2 



1 



1 







62 



2- 3 



2 



23 



45 



23 



2 



1 







96 



3- 4 





3 



31 



44 



16 



2 







96 



4- 5 







4 



30 



34 



10 



3 





81 



5- 6 





1 





4 



20 



19 



3 





47 



6- 7 







2 



6 



9 



16 



6 



1 



40 



7- 8 









5 



15 



4 



6 



1 



31 



8- 9 











3 



4 



3 





10 



9-10 













2 







2 



10-11 











1 



1 



2 



1 



5 



11-12 















2 





2 



12-13 















1 





1 



13-14 











1 



1 







2 



8 28 57 100 115 102 61 26 



500 



Fig. 39. — Total yield of plant in grams, subject 



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

 Coefficient of correlation = .767 =b .012 



^ 



0-1 

 1-2 

 2-3 

 3-4 

 4-5 

 5-6 

 6-7 

 7-8 

 8-9 



.'A 



1 

 o 



.^ 



6 



.^ 



A 



lO 



A 



1—1 



(N 



<M 





CO 



^ 





lO 



3 

















4 



13 



14 



11 



6 



1 





1 



2 



7 



30 



40 



19 



6 



2 







1 



13 



31 



45 



16 



3 









2 



15 



33 



20 



9 



1 











9 



18 

 4 



1 



11 

 2 

 1 



4 

 1 

 1 



9 21 59 97 112 66 28 8 



3 



50 



106 



109 



80 



42 



7 



2 



1 



400 



Fig. 40. — Total yield of plant in grams, subject 



Average number of spikelets per culm per plant, relative. 

 Coefficient of correlation = .665 ± .019 



1910 



varies from . 665± . 019 for 1910 to . 879± . 005 for 1908. This correlation 

 is very high, positive, and fairly stable. It indicates that the total yield 

 is dependent to a large extent on the number of spikelets produced. The 

 correlation of yield and total number of spikelets would undoubtedly 

 be higher than that with average number of spikelets per culm. 



