370 LOCK : STUDIES IN PLANT BREEDING 
were grown much too close together, and partly to the different 
season with more moisture and less sunshine. The plants were all 
badly mildewed. Half the plants grown at this time produced one or 
more branches. 
C .—Further Generations. 
1 .—Native pea No. 1 x Telegraph, F 2 , and F 3 .—Six plants from F x 
seeds sown on December 8, 1902, produced the following seeds :— 
No. 
Yellow. 
Green. 
157.1 
11 
5 
186.1 
11 
5 
.2 
10 
4 
238.1 
10 
5 
.2 
8 
7 
303.1 
18 
13 
Total 
68 
39 or 1 
In only two cases could any trace of yellow be detected in a 
“ green ” seed, as examined through the semi-transparent testa— 
a proportion of 5 per cent., which may be compared with the 30 per 
cent, found in the uncrossed strain of Telegraph. 
Of the 107 seeds, 66 were sown on May 2nd, 1903, but only the 
plants arising from 21 yellow and 11 green seeds produced fruits. 
They ranged from 45 to 102 inches in height, the average being 
nearly 7 feet. „ . . „ 
Number. 
f 2 . 
F3. 
f. 2 . 
1 Height 
j (Inches). 
Number of 
Nodes. 
! Width of a 
j Pod (mm.). 
Number of 
Pods. 
J Number of 
Seeds. 
Yellow. 
Green. 
[ Colour of Seed 
I sown. 
Nature of Seed 
sown. 
180.1.1 
64 
20 
12 
2 
5 
4 
1 
y 
DR 
.2 
83 
27 
16 
3 
6 
4 
2 
y 
DR 
.3 
88 
28 
17 
5 
16 
— 
16 
g 
R 
.4 
490 
32 
15 
5 
13 
-** 
13 
g 
R 
.5 
r 85 
30 
18 
1 
5 
— 
5 
g 
R 
.6 
1 *77 
27 
17 
1^ 
3 1 
— 
3 1 
g 
R 
D. The yellow seed was a pure dominant. 
R. The green seed was pure recessive. 
DR. The yellow seed was a heterozygote. 
