Variation and Correlation of Oats — Part II 141 



The means (M), standard deviations (<r), and coefficients of variability 



(C) for the plants grown from these sowings are given in Table 7: 



TABLE 7. Means, Standard Deviations, and Coefficients of Variability, Series 

 1219, 1221, 1257, 1259.* Varieties in Hills and in Drills 



Average yield of culm per plant, in decigrams 



1219 1221 1257 1259 



M.... 3.433 ± .096 7.890 ± .118 3.950 ± .102 9.087 ± .124 



a.... 2.473 ± .068 3.034 ± .083 2.628 ± .072 3.186 ± .088 



C 72.04 ±2.82 38.45 ±1.20 66.53 ±2.51 35.06 ±1.08 



Average height of plant, in centimeters 



1219 1221 1257 1259 



M....55.850± .432 58.683± .290 49.566± .416 51.916± .252 



ff .... 11.114± .306 7.462± .205 10.703± .294 6.486± .178 



C 19.90 ± .57 12.72 ± .36 21.59 ± .62 12.49 ± .35 



Average number of kernels per culm of plant 



1219 1221 1257 1259 



M....29.293± .695 55.293 ± .737 28.440 ± .663 55.480 ± .700 



ff .... 17.867± .491 18.942 ± .521 17.054 ± .469 17.992 ± .495 



C 60.99 ±2.21 34.26 ±1.05 59.96 ±2.16 32.43 ± .98 



Average number of spikelets per culm of plant 



1219 1221 1257 1259 



M....17.160± .359 31.427 ± .393 14.000 ± .330 28.260 ± .357 



ff.... 9.230 ± .254 10.110 ± .278 8.475 ± .233 9.190 ± .253 



C 53.79 ±1.86 32.17 ± .97 60.54 ±2.19 32.52 ± .98 



Average weight of straw per culm of plant, in decigrams 



1219 1221 1257 1259 



M.... 5.227 ± .107 10.190 ± .129 5.303 ± .116 9.423 ± .117 



ff.... 2.763 ± .076 3.317 ± .091 2.977 ± .082 2.997 ± .082 



C 52.86 ±1.81 32.55 ± .99 56.14 ±1.97 31.81 ± .96 



Average weight of kernels per plant, in milligrams 



1219 1221 1257 1259 



M....10.913± .115 14.080 ± .066 13.067 ± .093 16.163 ± .063 



<7.... 2.967 ± .082 1.684 ± .046 2.400 ± .066 1.632 ± .045 



C 27.19 ± .80 11.96 ± .33 18.37 ± .52 . 10.10 ±..28 



* 1219, Early Champion in drills 

 1221, Early Champion in hjlLq 

 1257, Sixty Day in drills 

 1259, Sixty Day in hilla 



