52 
BULLETIN 1403, U. S. DEPARTMENT OF AGRICULTURE 
Table 47. — Crude-protein content in the Fz generation of grain from 689 strains 
of Marquis-Hard Federation wheat hybrids in comparison with 63 parent checks 
grown at Bozeman, Moccasin, and Havre, Mont., in 
Bozeman 
Moccasin 
Havre 
Crude-protein content 
Fa hy- 
brids 
Hard 
Feder- 
ation 
Mar- 
quis 
F 3 hy- 
brids 
Hard 
Feder- 
ation 
Mar- 
quis 
F 3 hy- 
brids 
Hard 
Feder- 
ation 
Mar- 
quis 
9 per cent . . .._ . _ 
9.5 per cent.. .. 
1 
1 
3 
2 
5 
5 
14 
4 
6 
9 
23 
68 
41 
35 
7 
.. . ...] . . .. 
10 per cent. ._ .. 
1 
1 
10.5 per cent ... 
11 per cent . 
1 
4 
5 
5 
21 
30 
27 
17 
7 
1 
11.5 per cent 
1 
12 per cent 
1 
7 
7 
11 
26 
40 
40 
49 
51 
37 
20 
8 
13 per cent 
o 
13.5 per cent. . 
1 
3 
2 
2 
7 
3 
14 per cent ... 
5 
3 
1 
„ 
1 
4 
4 
1 
1 
15 per cent ... 
1 
1 
15.5 per cent. - .. . 
2- 
16.5 per cent... 
4 
17 per cent 
4 
17.5 per cent . 
2- 
18 per cent 
1 
2 
1 
Total 
224 
14.68 
13 
14.69 
13 
15.08 
118 
13.58 
1 
14.0 
1 
15.2 
297 
15.82 
18 
15.06 
17 
Average per cent 
16. 76; 
At Moccasin, where the yields were slightly higher than at Boze- 
man, the crude-protein contents of both hybrids and parents are 
slightly lower. The data from a single check row of each parent 
shows a difference of 1.2 per cent in favor of Marquis. Considering 
the variability shown in the Bozeman data it is likely that the 
relative percentages of the two parents are not correct and that this 
difference between the two is greater than actually existed. The 
F 3 hybrids averaged lower than Hard Federation, which in part may 
be caused by the lower yielding strains having been discarded. 
At Havre, where the yields were low in comparison with those from 
Bozeman and Moccasin, the crude-protein content was higher. The 
average of the hybrids was nearly intermediate to that of the parents 
at this point, which is similar to the F 2 results at Bozeman. 
The data on the crude-protein content of the grain of F 2 plants 
afforded opportunity to select for high crude-protein content in that 
generation. Some of the F 2 plants of highest crude protein were the 
parents of families studied on a plant basis in the F 3 generation. 
Data for some of the F 3 strains of highest and lowest average crude- 
protein content, compared with the nearest check rows of the parents 
studied in the same manner, are given in Table 48. 
