462 
Journal of Agricultural Research 
Vol. XXIV No. 6 
first 5 classes could represent reasonably well the true spring type. If 
such were the case, there would be 4,350 plants of the spring type and 900 
of the winter, a ratio of approximately 5 spring plants to i winter 
plant. If it were assumed that all plants which headed during the sum¬ 
mer were of spring type, there would be a ratio of approximately ii 
spring to i winter. In either case there is a partial dominance of the 
spring over the winter habit. 
A study was made to ascertain whether any correlation existed between 
the inheritance of growth habit and the presence of awns. A total of 
432 plants were tabulated according to their growth habit in relation to 
this character. The awn characters were recorded from the Fj individual 
plants and controlled by the progeny performance in the Fg. The results 
are presented in Table I. 
Tabi^E I .—The relation between awns and growth habit in the progeny of a Kanred X 
Marquis hybrid 
Heading period. 
Number of 
plants with 
long awns. 
Number 
plants with 
interme¬ 
diate awns. 
Number of 
awnless 
plants. 
I. 
18 
25 
29 
21 
14 
II 
2 . 
17 
14 
21 
2. 
16 
4 . 
21 
24 
16 
c . 
23 
29 
6 
26 
6 . 
41 
0 
38 
II 
7. 
8... 
I 
y 
I 
Total. 
129 
172 
131 
The results presented in Table I show that there is a lack of correlation 
in the inheritance of awns and growth habit characters. While the 
numbers are not very great for each separate heading period, there is a 
total of 129 bearded plants compared to 131 beardless plants for the first 
8 periods. 
The segregation of plants for growth habit in the Fg families was in 
accord with the segregation obtained in the Fg. The growth habit of 
the plants belonging to the various Fg groups is shown in Table II. 
Tabi^B II .—The growth habit in Fg of plants belonging to separate Fg heading groups 
in a Marquis-Kanred hybrid 
Number of families. 
Heading period. 
Grown. 
Homozy¬ 
gous for 
spring 
habit. 
Heterozy¬ 
gous for 
growth 
habit. 
Homozy¬ 
gous for 
winter 
habit. 
10 
10 
0 
0 
10 
6 
4 
0 
10 
7 
0 
10 
5 
< 
0 
10 
2 
8 
0 
6. 
Q 
0 
Q 
0 
6 
0 
y 
4 
2 
