YUZO IIOSHINO 
251 
parent individuals, which belonged to the early flowering group, produced the 
early intermediate constant families; and among the later flowered parent in- 
dividuals, some produced the late or pseudo-late constant families, and some 
produced families which have almost equal variation types to those of the 
parent families. Here again, we see the variation types of segregation in the 
progenies of a monohybrid parent, and we can safely conclude that the F,^ 
grand-parents were monohybrids, being heterozygous in the determiners of 
the early intermediate flowering time and of the late or pseudo-late flowering 
time. By comparing the variation means of the constant families of four 
different progenies, however, we must assume that their F^ grand-parents 
were more or less different in the flowering character genetically. There is 
no practical difference between the variation means of both the earlier and later 
constant families in E and F, but the variation means of both the earlier and 
later constant fiiinilies in D are smaller (earlier) than those of both constants 
in the former two raisings, and the variation means of the earlier constant 
families in C are larger (later) than that in J), while the variation means of 
the later constants are almost ec}ual to that in D. 
In 1914. 
For this year, as more space was available for the experiment than in the 
previous years, we selected the following 15 families raised in 1913 (Table 1 1, 
Pis. XV and XVI) :— 
No. 13 (XVI X 3.2.13) (G) No. 79 (XVI X 3-3-'2) (0) 
No. 20 (XVI X 3.3.24) (H) No. 76 (3 X XVI. 2.11) (P) 
No- 22 (XVI X 3.2.30) (I) No. 82 (3 X XVI.2.30) (Q) 
No. 4 (XVI X 3.3.6 ) (J) No. 83 (XVI X 3.2.1 ) (R) 
No. 7 (3 X XYI.2.6 ) (K) No. 37 (XVI X 3.2.29) (S) 
No. 8 (XVI X 3.2.2 ) (L) No. 41 (3 X XVI.2.23) (T) 
No. 58 (3 X X\n.2.4 ) (M) No. 57 (3 X XVI.2.27) (U) 
No. 73 (XVI X 3.35 ) (N) 
The sowing was done on May 4. A heavy drought followed the sowing and 
prevented the normal, even sprouting of the seeds. The first sprouting took 
place on the 14th of the month and continued gradually until the 6th of June. 
