YUZO HOSHINO 
Fl Raising in 1908. 
On May 8, we sowed all of the cross seeds harvested in the previous year, 
together with some seeds from the parent plants which were used in the 
crossing as the seed parents or the pollen parents. With a few exceptions, 
the seeds sprouted very evenly, and the young plants grew in excellent condi- 
tion. 
During the summer vacation of that year, the author had to take a trip 
to Manchuria, and at the time when the I. P. plants had just begun to flower, 
he left Sapporo, entrusting all observations to his assistant. On his return to 
Sapporo in the middle of September, he found all had been harvested in 
rather miserable condition, and heard that in August a formidable storm had 
raged in Northern Japan, and many of our jilants were badly injured and 
many of the ripened pods were shaken off. And to our great regret, owing 
to the misunderstanding of the assistant, all the pods of every parent variety 
were sacked together without any distinction of the origin. 
But, from the records taken, we got the frequency distribution of the 
number of days from sowing to flowering of the F^^ offsprings and that of 
the parent varieties, as shown in Table i. 
From Table i, we see that the flowering time of the F^ is not just inter- 
mediate between those of the parent varieties, but inclines much towards that 
of the late parent. In other words, we may saj' that in the present instance 
imcomplete dominance of lateness occurs. And there is practically no essen- 
tial difference between reciprocal crosses. 
F2 Raising in 1909. 
From the F^ plants we selected the following individuals: — 
? G. p. n X S I. P- 13— No. I No. 3 No. 4 No. 5 No. 6 
? I. p. 16 X 3 G. p. II,— No. 1 No. 2 No. 3 No. 4 No. 5 
? G. P. V X 3 I. p. 17,— No. I No. 2 No. 3 No. 4 
^ I. p. 20 X S G- p. V,— No. I No. 2 No. 3 No. 4 No. 5 
