108 Clyde E. Leighty 



TABLE 4. — Means, Standard Deviations, and Coefficients of Variability, Series 

 1200, 1219, 1238, 1257.* ' Varieties 



Average yield of culm per plant, in decigrams 

 1200 1219 1238 1257 



M.... 6.403 ± .149 3.433 ± .096 8.217 ± .219 3.950 ± 102 



^.... 3,826 ± .105 2.473 ± .068 5.632 ± .155 2.628 ± 072 



C 59.75 ±2.15 72.04 ±2.82 68.54 ±2.62 66.53 ±2.51 



Average height of plant, in centimeters 

 1200 1219 1238 1257 



M....56.533± .362 55.850 ± .432 62.916± .507 49.566± 416 



a.... 9.304 ± .256 11.114 ± .306 13.041 ± .359 10.703 ± .294 



C 16.46 ± .46 19.90 ± .57 20.73 ± .59 21.59 ± .62 



Average number of kernels per culm of plant 



1200 1219 1238 1257 



M....26.387± .510 29.293± .695 30.213± .755 28.440± .663 



(7.... 13.113 ± .361 17.867 ± .491 19.420 ± .534 17.054 ± .469 



C 49.70 ±1.67 60.99 ±2.21 64.28 ±2.39 59.96 ±2.16 



Average number of spikelets per culm of plant 



1200 1219 1238 1257 



M...,14.120± .275 17,160± .359 16.587± .421 14.000± .330 



<T.... 7.082 ± .195 9.230 ± .254 10.834 ± .298 8.475 ± .233 



C 50.16 ±1,69 53.79 ±1.86 65.32 ±2.45 60.54 ±2.19 



Average weight of straw per culm of plant, in decigrams 



1200 1219 1238 1257 



M.... 8.653 ± .180 5.227 ± .107 9,767 ± .204 5.303 ± .116 



fj 4.632 ± .127 2,763 ± .076 5.250 ± .144 2.977 ± .082 



C 53.53 ±1.85 52.86 ±1.81 53.75 ±1.86 56.14 ±1.97 



Average weight of kernels per plant, in milligrams 



1200 1219 1238 1257 



M....22.640± .172 10.913± .115 25.413± .155 13.067 ± .093 



<T.... 4.417 ± .121 2,967 ± .082 3.983 ± .110 2.400 ± .066 



C 19,51 ± ,56 27.19 ± .80 15.67 ± .44 18.37 ± .52 



*1200, Great American 

 1219, Early Champion 

 1238, Welcome 

 1257, Sixty Day 



