SORGHUM SMUTS AND VARIETAL RESISTANCE 
23 
Table 4. — Results of inoculation experiments with spores of covered kernel smut 
on varieties of kaoliang at five stations in one or more of the seven years from 
1915 to 1921, inclusive 
Number of plants grow 
n 
Percentage of plants infected 
Variety, strain, and station 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
Aver- 
age 
BLACKHTJLL 
Barchet, Mo. No. 20: 
335 
31.0 
31.0 
Barchet, Mo. No. 61: 
91 
39 
28.6 

20.0 
18 
44.4 
44.4 
Barchet, C. I. No. 310: 
75 
24 

105 
13. 3 12. 5 

49.5 
31.9 
57 
5.3 
5.3 
82 
153 
145 
515 
8.5 
2.0 
24 1 
43.7 
30.2 
52 
36.5 
36.5 
WHTTE 
Mukden, C. I. No. 190: 
57 
36 
194 
71 
95 
114 
15 
29 
12.3 
2.8 
10.8 
7.0 
14.7 
14.0 

6.9 
5.2 
8.4 
Amarillo 
10.6 
BROWN 
Brown, Mo. No. 40: 
Columbia . __ 
10.6 
Brown, S. P. I. No. 38463: 
14 


Choonchun, C. I. No. 413: 
Manhattan . __ __ 
124 
127 
50 
104 
3.2 


1.9 
1.5 
33 
36.4 
36.4 
Amarillo .. .. ... . _ 
132 
83 
282 
284 
6.8 


1.8 
1.8 
63 
1.6 
.... 
1.6 
Chusan, C. I. No. 324: 
127 
190 
53 
115 
3.9 
7.9 
13.2 
2.6 
6.2 
51 
47.1 
47. 1 
267 
323 
105 
488 
2.6 
8 4 
3.8 
2.9 
4.4 
Rosslyn. . ._ ... .. 
77 
6.5 
6.5 
Columbia... 
163 
203 
108 
92 
63 
4.3 
24.6 
27.8 
4.3 
4.3 

4.3 
Manchu, Mo. No. 39: 
21.8 
Manchu, Mo. No. 58: 
Columbia 
2.6 
10 
50.0 
50.0 
Manchu, C. I. No. 171: 
110 
125 
99 
103 
7.3 
^9 8 
13.1 
30.1 
15. 6 
158 
32.3 
32.3 
116 
127 
192 
377 
12.1 
10.2 
21.4 
18.8 
17. 1 
58 
6.9 
.... 
6.9 
Manchu, C. I. No. 328-1: 
136 
55 
103 
103 
6.6 
18.2 
28.2 
37.9 
21.9 
16 
56.3 
56.3 
163 
214 
350 
373 
12.9 
3.2 
11.0 
4.2 
2.1 
6.1 
5.1 
6.3 
2.2 
13.1 
6.0 
7.6 
8.8 
Rosslyn . .. 
35 
.... 
.... 
2.9 
.... 
2.9 
Parker, C. I. No. 424: 
154 
155 
188 
244 
48 
360 
67 
344 
3. 5 
6.0 
Rosslyn ._ __ 
41 
151 
'"I 
.... 
2.4 
61.6 
~b~~ 
2.4 
Valley, C. I. No. 309: 
61.6 
Shantung Dwarf, Mo. No. 22: 
276 
.4 
t 
.4 


Shantung Dwarf, C. I. No. 293: 
Manhattan .. 
134 
143 
167 
119 
103 

.7 


.2 
10 

Amarillo . 
137 
181 
189 
322 





Rosslyn 
60 


) 
