Aug. 26, 19x8 
38t 
Variation and Correlation in Wheat 
due to the differences in environment between the first two and last 
two years. 
Table XIII .—Coefficients of correlations between plant characters 
Characters studied. 
Yield of kernels per plant (dgm.) and— 
Number of kernels per plant. 
Average weight of kernels per plant .mgm. 
Number of culms per plant. 
Average height of culms per plant.cm. 
Average length of spikes per plant.cm. 
Total length of spikes per plant.cm. 
Number of culms per plant and— 
Average length of spikes per plant.cm. 
Total length of spikes per plant.cm. 
Average weight of kernels per plant (mgm.) 
and— 
Number of kernels per plant. 
Number of culms per plant. 
Average length of spikes per plant_cm., 
Total length of spikes per plant.cm., 
Average height of culms per plant (cm.) and— 
Number of kernels per plant. 
Average weight of kernels per plant.. mgm. 
Number of culms per plant.. 
Average*length of spikes per plant.cm.. 
Total length of spikes per plant.cm., 
Height of plants at appearance of second leaf 
(cm.) and— 
Height of plants at six weeks.cm.. 
Height of tallest culm at maturity.cm.. 
Height of plants at six weeks (cm.) and— 
Height of tallest culm atmaturity...... cm.. 
1914 
1915 
19x6 
1917 
0.851^:0.010 
.55°± *027 
. Soo± .029 
.384^ .033 
•357± -034 
• 636± .023 
0.881 ±o. 006 
. 5°4i • 021 
• 669± ,015 
• 3°3± .025 
•344± .024 
. 8o8± .009 
0.95 2 ±0.002 
. 370± .022 
. 8i8± .008 
. 478± .0x9 
• 459± .020 
. 9io± . 004 
0.973 ±0.001 
. 3o6± .027 
.324± .009 
. 452± .024 
• 59i± * 020 
• 9H± .005 
• o6i± .038 
■ 872± .009 
• 024± .028 
• 839 ± .008 
. 039± .025 j 
• 958± .002 
. 236±. 029 
. 9462b .003 
.I37± -038 
• 07i± .038 
•i53± -038 
• ooi± .038 
. I92± .027 
. I37± • 027 
. I20± .027 
. I59± . 027 
. i6o± • 024 
—.054± .025 
. 552± .017 
• o79± .025 
.i6o± .030 
— .009± .030 
. 4ii± .025 
. 09i± .030 
• 257± .036 
. 4 o 8± .030 
• I95± -037 
• 3iS± -035 
.036± .038 
•339± .025 
• 07i± .028 
• 092 ± .028 
• 4i9± *023 
• 2&o± . 026 
• 364± .022 
.648± .014 
• 046± .025 
. 775 ± -oio 
.235± .024 
• 43i± .025 
. 426± .025 
. 205± .029 
. 668± .017 
• 3SI± *027 
.4o6± .038 
• 38o± .033 
• 467± .022 
.2702b .026 
• 470± .019 
.272± .023 
. 466± .024 
.211± .029 
•399± *038 
.236db .026 
• 523± .018 
• 3X4± .027 
Table XIV. — Yield in decigrams of kernels per plant correlated with average weight in 
milligrams of kernels per plant, IQ14 
Yield of kernels per plant (dgm.). 
Fre¬ 
V) 
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2 
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13. 
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2 
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2 
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19. 
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21. 
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Freauencv. 
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63 | 
CT 
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22 
2Q 
6 
A 
300 
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J* 
O i 
9 
1 
a 
Correlation®* o. 550* 0.027. 
64614°—18-4 
