Variation and Correlation of Oats — Part I 



59 





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186 



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215 



15-20 



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20-25 



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25-30 





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30-35 











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40-45 

















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106 268 238 132 46 18 



825 



Fig. 65. — - Number of spikelsts per culm, subject 



Total number of kernels per culm, relative. 1908 

 Coefficient of correlation = .880 ± .005 



year, 1908, when it was .880±.005. This indicates a very high cor- 

 relation between these two characters, from which it may be concluded that 

 the spikelet and kernel development of the plant are mutually related. 



Considering as a whole the relation of the average number of spikelets 

 per culm per plant -with other characters, it has been seen that as the 

 spikelets increase or decrease there is likewise a strong, simultaneous 

 increase or decrease in the number of kernels produced, and a fairly strong 

 similar change in number of kernels per spikelet. 



Correlation of number of culms per plant with other characters 

 The correlation between number of culms per plant and average yield 

 of culm per plant (Figs. 66, 67, 68), determined for three years, varies 





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3 3 7 16 33 32 56 53 65 58 55 39 30 27 10 5 7 1 500 



Fig. 66. — Number of culms per plant, subject 



Average yield of culm per plant in grams, relative. 1909 



Coejficent of correlation ^.387. ±.026 



