414 



Journal of Agricultural Research 



Vol. V, No. lo 



On the hypothesis of factors acting as multipliers, the range of the 

 long-podded plants should be about 1.5 times that of the short-podded 

 plants, as it is in the more reliable 1912 results. 



To sum up, the results of investigation of the second generations agree 

 with the hypotheses that all the factors act as multipliers; that factor E 

 is completely dominant; that the minor factors show zero dominance; 

 that the minor factors act symmetrically with regard to each of the two 

 grandparental lengths, which is not the case in a cross of the Florida 

 velvet bean by the Yokohama bean {Stizolohium hassjoo). 



THIRD GENERATION 



Table VI gives all the third-generation families, grown in the elimi- 

 nation field, which segregated measurable short podded; and also all 

 which did not, but had eight or more measurable survivors. Because of 

 the crowding, these results are not so reliable as those given in Table VII, 

 which include all the families grown on poles in 19 13. 



Table VI. — Frequency arrays of the average lengths of ripe pods of the third generation 

 Florida velvet bean X Lyon bean {classes of ^ mm.) 



[The asterisk (*) shows the pod length of the parent plant of the family.] 



Parentage. 



Length of 

 pod.nun 



VL-292 . . 

 VL-133 . . 

 VL-171 . . 

 VL-325 . . 

 VL-88 . . . 

 VL-509 . . 

 VL-164 . . 

 VL-294 . - 

 VL-85 . . . 



VL-158 . . 

 VL-569 . . 

 VL-319.. 

 VL-147 . . 

 VL-114.. 

 VL-2S5 • ■ 



VL-92 . . . 



VL^4 . . . 

 VL-194 • . 

 VL-610 . . 

 VL-102 . . 

 VL-120 . . 

 VL-177 . . 

 VL-2SI . . 

 VL-sis". 



VL-480 . . 

 VL-sis-^. 



Vh-297C. 



Average 



length of 



pod.o 



.(107) 



o The averaccs for the first nine families refer to the long-podded plants alone. 

 b Grown in the elimination field in igii. 

 c Grown on poles in 191 2. 



