Aug. 18,1923 
Inheritance of Dwarfing in Maize 
307 
Table V. —Coefficients of biserial correlations in the second generation of the dwarf- 
brachy tic hybrid 
Measured characters. 
Stature groups. 
Normal versus 
brachytic stature. 
Normal versus 
dwarf stature. 6 
Dwarf versus 
brachytic stature. 
Length leaf . 
°-0. 40±. 033 
a — • 20±. O37 
. 12 db. 036 
• 75 ±*o 45 
. 22±. 037 
Width leaf. 
O.37 ±.029 
0.431 ±-<>37 
Number tassel branches . 
Total number leaves. 
. 09±. 063 
c -. 099^.054 
Leaf index. 
Height. 
c -. 882±. 035 
a Minus sign indicates negative correlation with brachytic stature. 
6 Correlations are positive with dwarf stature, 
c Minus sign indicates negative correlation with dwarf stature. 
Fig. 6.—Frequency distribution for number of tassel beanches. Shaded portion, dwarf plants; solid lines, 
brachytic plants; broken lines, normal plants. 
While the heterogeneous nature of the F 2 plants precludes the possi¬ 
bility of analyzing the correlations of the measured characters in the 
population as a whole, some insight may be gained on the interrelations 
of these characters if the three groups of plants, normal, brachytic, 
and dwarf, are analyzed separately. These correlations are given in 
Table VI. 
