Jan. 1,1925 
A Study of Variability in the Burt Oat 
55 
Table XV.— Data on association of lemma color and awn class in 9 strains of 
Burt oat grown at the Kansas Agricultural Experiment Station in 1920 
Awn classes in progeny 
Number of kernels with awns— 
Percentage of kernels with awns- 1 - 
Strain number and lemma color 
in kernels 
Twisted 
Nontwisted 
Nontwisted 
■jf 
Absent 
Long 
Short 
Absent 
Long 
Short 
Kansas No. 5020: 
Black..... 
0 
7 
5 
15 
0 
25.9 
18.5 
55.6 
Brown...... 
63 
396 
228 
307 
6.4 
39.8 
22. .9 
30.9 
Red.... 
5 
' 155 
85 
299 
.9 
28.5 
15.6 
55.0 
Yellow..... 
0 
20 
9 
43 
0 
27.8 
12.5 
59.7 
White____ 
0 
1 
1 
4 
0 
16.7 
16.7 
66.6 
Kansas No. 5211: 
Black___ 
11 
26 
9 
4 
22.0 
52.0 
18.0 
8.0 
Brown_ 
138 
466 
180 
170 
14.5 
48.8 
18.9 
17.8 
Red...... 
58 
361 
280 
215 
6.4 
39.5 
30.6 
23.5 
Yellow_____ 
16 
72 
13 
40 
11.3 
51.1 
9.2 
28.4 
Kansas No. 5219: 
Black... 
0 
20 
13 
7 
0 
50.0 
32.5 
17.5 
Brown__ 
83 
656 
322 
189 
6.6 
52.5 
25.8 
15.1 
.Red_____ 
11 
316 
148 
76 
2.0 
57.3 
26.9 
13.8 
Yellow...... 
0 
47 
16 
0 
0 
74.6 
25.4 
0 
Kansas No. 5220: 
Black....... 
3 
2 
2 
6 
23.1 
15.4 
15.4 
46.1 
Brown____ 
62 
92 
53 
112 
19.5 
28.8 
16.6 
35.1 
Red... 
33 
105 
108 
165 
8.0 
25.5 
26.3 
40.2 
Yellow. 4 .. 
0 
10 
18 
94 
0 
14.5 
13.7 
71.8 
, White____ 
0 
0 
* 0 
5 
0 
0 
0 
100.0 
Kansas No. 6004: 
Brown...... 
55 
51 
12 
130 
22.2 
20.6 
4.8 
52.4 
Red......... 
11 
15 
0 
557 
1.9 
2.6 
0 
95.5 
Yellow...... 
11 
p 5 
0 
100 
1.0 
4; 7 
0 
94.3 
Kansas No. 6052: 
Brown___ 
44 
7;4 
13 
257 
11.3 
19.1 
3.4 
66.2 
Red... 
71 
111 
46 
*377 
11.7 
18.4 
7.6 
62.3 
Yellow._ 
73 
38 
14 
287 
17.7 
9.2 
3.4 
69.7 
White.. 
0 
0 
0 
16 
0 
0 
0 
100.0 
Kansas No. 6076: 
Black..... 
0 
5 
4 
2 
0 
45.4 
36.4 
18.2 
"Brown_ 
0 
56 
21 
116 
0 
29.0 
10.9 
60.1 
Red____ 
25 
, " 13 
7 
268 
8.0 
4.2 
2.2 
85.6 
Yellow... 4 __ 
1 
10 
4 
463 
.2 
2.1 
.8 
96.9 
Kansas No. 6090: 
Black...... 
0 
16 
4 
15 
0 
45.7 
11.4 
42.9 
Brown_____ 
8 
367 
287 
525 
- .7 
30.9 
24.2 
44.2 
Red____ 
12 
43 
44 
29 
9.4 
33.6 
34.4 
22.6 
Yellow.. 
4 
0 
0 
7 
36.4 
0 
0 
63.6 
Kansas No. 6094: 
Black.... 
0 
2 
0 
0 
0 
100.0 
0 
0 
Brown.... 
98 
93 
57 
91 
28.9 
27.4 
16.8 
26.9 
Red........ 
126 
92 
32 
75 
38.8 
28.3 
9.8 
23.1 
Yellow_,... 
80 
47 
15 
70 
37.7 
22.2 
7.1 
33.0 
White...... 
0 
0 
0 
5 
0 
0 
0 - 
100.0 
All strains: 
Black_____ 
14 
78 
37 
49 
7.9 
43.8 
20.8 
27.5 
Brown.....±. 
551 
2,251 
^1,173 
1,897. 
9.4 
38.3 
20.0 
32.3 
Red.____ 
352 
1,211 
258 
* 750 
2,061 
8.0 
27.7 
17.1 
47.2 
x Yellow...... 
175 
89 
1,104 
10.7 
15.9 
5.5 
67.9 
White...'_ 
0 
1 
1 
30 
0 
3.1 
3.1 
93.8 
Q*=0.407db0.005 
There is some degree of association 
between lemma color and nontwisted 
awns (Q=0.407 ±0.005). Little if any 
association is apparent between the 
twisted awn and lemma color. This 
furnishes additional evidence of the 
fact that this awn probably belongs to 
a genotype very distinct from the other 
awn types. The light-colored kernels 
are more frequently awnless than are 
the dark-colored kernels. Nontwisted 
long awns are found much more numer¬ 
ous in the dark-colored kernel classes. 
PLANT VARIANTS 
These experiments have been chiefly 
concerned with the study of kernel 
characters. However, several interest¬ 
ing variations in plant characters have 
been observed. Different pedigreed 
lines vary considerably in the growth 
habit* of the young plants. Some are 
as prostrate as plants of Red Rustproof 
or Winter Turf, others are semierect, 
somewhat resembling Fulghum, while 
the majority of plants have the erect 
