Variation and Correlation of Oats — Part II 



155 



The numbers of culms per plant for the 300 plants used for biometrical 

 study of each of these series of oats are given in the following table: 



TABLE 12. Number of Culms per Plant for Each Series 





Number of culms per plant 



Average 

 number 





1 



2 



3 



4 



of culms 

 per plant 



68 



156 

 275 

 300 

 147 

 300 

 300 



102 

 24 



"71 



38 

 1 



"l9 



4 

 .... 



"l 



1.633 



102 



1.087 



118 



1 



63* 



100 



1 .-471 

 1 



122 .- 



1 







*In this series 238 plants were used. 



There is very little stooling when 700 plants of these varieties are grown 

 in eighteen-foot rows, and none at all when as many as 1500 are so grown. 



The means (M), standard deviations ("■), and coefficients of variabilitj^ 

 (C) for ten characters of these two Imes of oats, sowai at these different 

 rates, are given in Tables 13 and 14. In these tables the figures for the 

 least crowded series are given in the left column, those for the most 

 crowded in the right column, and the intermediate in the middle. Line 

 50al-18-2 is reported in Table 13, and line 62-II-19-2 in Table 14. 

 These lines will be referred to hereinafter as lines 50 and 62. 



TABLE 13. Means, Standard Deviations, and Coefficients of Variability, Series 

 63, 100, 122. Degrees of Crowding. Pure Line 50al-18-2 



Average jaeld of culm per plant, in decigrams 



63 100 122 



M 6.063 ± .108 2.630 ± .065 1.917 ± .047 



^ 2.469 ± .076 1.665 ± .046 1.215 ± .033 



C 40.72 ±1.45 63.31 ±2.34 63.38 ±2.34 



Average height of plant, in centimeters 



63 100 122 



M 71.785± .441 55.850± .448 54.983 ± .426 



T 10.100± .312 11.526± .317 10.950± .301 



C 14.07 ± .44 20.64 ± .59 19.92 ± .57 



