48 1 J(mrnal oj Agricultural Research v 0 i. xxx, no. i 
Table X.— Data on inheritance of lemma color in 8 strains of Burt oat grown at 
the Akron Field Station in 1921 
\ 
t 
Color of lemmas in lower florets of progeny 
/ 
Number of lemmas— 
Percentage of lemmas— 
Strain number and color of 
parent lemmas 
- 
d 
I 
o 
1 
d 
1 
. d 
S* 
2 
Black 
£ 
*3 
Q 
.d 
to 
3 
Red 
Yellow 
White 
Black 
,o 
M 
3 
Q 
£ 
*§0 
3 . 
Red 
Yellow 
White 
Kansas No. 5020: 
, Black. 
6 
154 
29 
3.2 
81.5 
15.3 
J)ark brown,__ 
106 
173 
33 
*34,0 
55.4 
10.6 
Light brown... 
163 
100.0 
Red_ 
4 
193 
40 
1.7 
81.4 
16.9 
Yellow. 
130 
21 
86.1 
13.9 
Kansas No. 5211: 
Black.. 
76 
30 
71.7 
28.3 
Dark brown_ 
60 
126 
104 
18 
216 
19.5 
40.9 
33.8 
5.8 
Light brown 
100.0 
Red 
641 
4 
99.4 
.6 
ySiow.:.. 
16 
. 987 
209 
5 
1.3 
81.1 
17.2 
0.4 
' White. 
’ 157 
255 
182 
26.4 
42.9 
30.7 
Kansas No. 5220: 
Black. 
9 
56 
13 
11.5 
71.8 
18.7 
Light brown__ 
101 
61 
62.3 
37.7 
39 
100.0 
Yellow. 
227 
31 
88.0 
12.0 
White—..-. 
9 
2 
81.8 
18.2 
Kansas No. 6004: 
Light brown___ 
16 
100.0 
Yellow. 
13 
100.0 
Kansas No. 6052: 
Blerif ... 
4 
38 
34 
1 
- 
5.2 
49.3 
44.2 
1.3 
• < 
Dark brown.. 
18 
151 
39 
8.7 
72.6 
18. t 
- 
Red - 
22 
31 
41.5 
58.5 
Kansas No. 6076: 
i Black. 
123 
12 
8 
86.0 
8.4 
5.6 
; Dark brown___ 
33 
46 
41.8 
58.2 
Red 
3 
264 
8 
1.1 
96.0 
2.9 
Kansas No. 6090: 
Black. . . 
19 
47 
45 
17.1 
42.4“ 
40.5 
Dark brown 
4 
11 
49 
78 
3 
2.7 
7.6 
33.8 
53.8 
2.1 
Light biwn __ _ 
8 
83 
12 
7.8 
,80.6 
719 
11.6 
Red.. - 
24 
278 
92.1 
Yellow_ . . 
71 
100.0 
Kansas No. 6094: 
Dark brown__ 
13 
93 
33 
9.4 
66.9 
23.7 
Red . , - 
8 
117 
1 
6.3 
92.9 
.8 1 
Yellow. 
109 
16 
87.2 
12.8 1 
White . 
91 
100.0 
SUMMARY 
All strains: 
Black. 
25 
337 
256 
t 
83 
1 
3.6 
48.0 
36.5 
11.8 
.1 
Dark brown 
64 
307 
8 
3 
616 
201 
3 
5.4 
25.8 
51.7 
16.9 
.2 
' Light brown 
184 
468 
1.2 
27.9 
70.9 
Bed.... 
36 
1,554 
1,524 
257 
84 
.2 
2.1 
92.7 
5.0 
Yellow._ 
16 
290 
5 
.9 
83.0 
15.8 
.3 
White.:. 
257 
182 
36.9 
36.9 
26.2 
the reason that they were not ob¬ 
tained from controlled crosses of par¬ 
ents of known factorial composition 
for the characters under observation, 
the conditions usually considered essen¬ 
tial for the accurate study of linkage 
relations., The data on 1 association of 
kernel characters are presented in Tables 
XI to XV in such a way that both 
actual or observed numbers and per¬ 
centages for each pair of characters 
Can .be seen at a glance. 
in addition, the coefficient of asso¬ 
ciation (Q) of Yule (152) has been de¬ 
termined for each of-the five association 
groups. In order to use the formula, 
od —be 
ad-\-bc, 
it was necessary to group the data for 
any character into two contrasting 
classes. Thus, in determining asso¬ 
ciation between awns and kernel color, 
the kernels were classed as awned or 
