150 



Clyde E. Leighty 



The average weight of kernels per plant correlated with average 

 height of plant (Figs. 107, 82, 109, 119) shows a greater difference m 

 the coefl&cients. For seri-es 1219 the coefficient is .553 ± .027, and for 

 series 1221 it is .325 ± .035. The difference is here .228 ± .044, which 

 is about five times its probable error. For series 1257 the coefficient U 

 .577 dz .026, and for series 1259 it is .1"86 zb .038, the difference here being 

 .391 ± .046) which is eight and one half times its probable error. This 

 difference is doubtless of significance. 



Ser>s? 1?59 



^ 



9-10 

 10-11 

 11-12 

 12-13 

 13-14 

 14-15 

 15-16 

 16-17 

 17-18 

 18-19 

 19-20 

 20-21 



Totals 



J. 



^ 



J^ 



1 



o 



LO 



1 



o 



^ 



^ 



^ 



(M 



CO 



CO 



-* 



'^ 



i-O 



o 



o 



o 













1 









1 



1 





1 







1 









1 



2 

 1 



2 

 2 



2 



1 



7 



1 













6 



4 



12 



6 



3 









2 



5 



18 



28 



17 



5 



1 







1 



11 



19 



24 



24 



11 











1 



9 



11 



18 



3 







1 





2 



6 



5 



10 



1 







1 





1 



4 



4 



1 

 1 







6 31 62 93 79 23 



Totals 



1 

 

 4 



8 

 11 

 31 

 76 

 90 

 42 

 25 

 11 



1 



300 



Fig. 119. — Correlation between average weight of kernels per 

 plant, in milligrams, subject; and average height of plant, 

 in ceniimeters, relative 



r= .186 ± .038 



For average weight of kernels per plant correlated with average number 

 of kernels per culm of plant (Figs. Ill, 84, 113, 120), the coefficient for 

 series 1219 is .340 ± .034, and for series 1221 it is .250 ± .036, shomng a 

 difference of .090 ± .050, which is a little less than twice its probable 

 error. Between series 1257 and series 1259 there is a dift'erence of .229 

 rb .050, which is more than four times its probable error. This difference 

 is probably significant. 



