Dec. 6,1915 
Inheritance of Length of Pod in Certain Crosses 
4i5 
Table VII. —Frequency arrays of the average length of ripe pods of the third-generation 
Lyon bean X Florida velvet bean (classes of 3 mm.) 
[The asterisk (*) indicates the pod length of the parent of the family] 
In length of pods, VL-319 and TV-113 are the two lowest families 
from long-podded parents. The family of VT-319 ranges from 76 to 
88 mm. and seems homozygous for E ; that of LV-113 ranges from 76 
to 85 mm., and throws short-podded, ranging from 49 to 58 mm. The 
parental lengths were 82 and 79 mm., respectively. To all appearances 
these two families are homozygous recessives for minor factors (regarded 
as positive). 
VT-480 and VI^85 are the two highest families with the highest aver¬ 
ages. (VL-297 was a nearly normal black plant throwing velvet.) The 
family of VI^-480 ranges from 97 to 112 mm. and is homozygous for E . 
VT-85 ranges from 88 or 94 to 112 and throws short-podded of 70 to 
73 mm. long. The parental lengths were 113 and 106 mm., respectively. 
VI^-480, as shown in the fourth generation, is apparently homozygous 
for all minor factors, as well as for E. 
Thus, both near the minimum and near the maximum of the second- 
generation long-podded plants, we find plants homozygous and heterozy¬ 
gous for E . Hence, E is probably completely dominant. 
The numbers in each family are not large enough to determine the sepa¬ 
rate ranges. The fifth and last lines of Table V show the pod lengths of 
the parents of these families. The correlation between the average pod 
• lengths of the long-podded parents and the averages of the long-podded 
plants of their progenies is 82 ±5 per cent for 36 third-generation families. 
The range of the short-podded plants in the various families is from 49 
or 52 to 73 mm., and that of the long-podded from 73 to 118 mm. in the 
elimination field (omitting the black plant, VI/-297) and from 76 to 115 
