20 
BtTLLETIK- 1299, U. S. DEPARTMENT OF AGRICULTURE 
Erhkorn (C. I. 2134) was grown at only one station, P ull man, where 
it remained bunt free in both, years. In experiments conducted by 
one of the writers ( W. W. Mackie) at Berkeley, Calif., in 1919, einkorn 
showed about 25 per cent of infection. 
RESULTS WITH AUSTRALIAN WHEATS 
Many Australian wheats, principally spring common varieties, 
were included in the experiments at Davis and Moro. These wheats 
were grown during two years at Davis and only one year at Moro. 
The same methods were employed in smutting the seed, sowing, and 
calculating the percentages of bunt as were used with all other 
wheats. The results are given in Table 5. 
According to the results of the limited experiments presented in 
Table 5, these Australian wheats appear to be rather uniformly 
susceptible to bunt. A few varieties, however, show a marked 
degree of resistance. Among these are Florence (C. I. Nos. 4170, 
4988, and 4740), Genoa (C. I. No. 4120), Bathurst No. 2 (C. I. No. 
4116), Nardoo (C. I. No. 4985), all common wheats, and the only 
poulard wheat included hi the list, Marster's Perfection (C. I. No. 
4726). None of these, however, with the exception of Florence, 
shows enough resistance, combined with other desirable qualities, 
to make it highly desirable for use as a parent for hybridization 
purposes. 
Table 5. — Australian wheats grown from smutted seed at Davis, Calif., and Moro, 
Oreg., showing the -percentages of bunted heads in the years specified 
C.I. 
No. 
Percentages of bunted heads 
Variety 
Davis, Calif. 
Moro, 
Oreg., 
1919 
Average 
in all 
1920 
1921 
station 
years 
when 
grown 
SPRING COMMON WHEATS 
Alpha . -- 
4164 
5134 
5000 
4116 
4165 
5008 
513S 
5021 
4990 
4731 
5063 
4166 
5012 
5125 
4119 
4117 
4737 
49S9 
4986 
4730 
411S 
4732 
5123 
5005 
4998 
4983 
4991 
5979 
4999 
55.0 
90.6 
92.6 
14.4 
44.7 
60.1 
71.7 
41.3 
72.0 
66.0 
1.9 
17.2 
19.9 
24.7 
79.0 
.6 
76.0 
58.4 
54.4 
78.2 
Bathurst No. 2 . . 
8.2 
Bayah 
Do 
76.0 
61.0 
46.0 
47.0 
Do -_ 
48.2 
96.0 
90.0 
Bobs 
81.0 
31.8 
67.8 
51.8 
78.5 
64.5 
49.4 
22.3 
27.4 
19.8 
74.0 
76.2 
83.1 
91.5 
94.0 
92.1 
83.5 
79.6 
71.1 
63.8 
64.6 
66.5 
21.5 
44.6 
34.4 
36.4 
39.1 
35.6 
5. 7 
26.5 
9.7 
57.6 
50.5 
53.1 
54.2 
78.5 
56.2 
56.4 
57.9 
58.2 
35.9 
28.8 
79.2 
Bomen. „ 
26.7 
Bordier 
Bnnvip 
52.0 
87.0 
52.0 
54.8 
57.7 
Do 
55. 6 
Do 
51.8 
Cowra No. 3 
Cedar. 
71.0 
52.0 
14.0 
Do 
66.0 
50.0 
84.0 
95.0 
40.0 
Do 
26.5 
Canberra.. 
Do 
71.9 
73.9 
Cleveland 
68. 1 
Do 
89.0 
86.0 
74.0 
84.0 
51.0 
78.0 
78.2 
Do 
86.2 
College Purplestraw . . 
74. 1 
College Eclipse . 
74 6 
Commonwealth . . 
62.8 
Comeback ... .. .. 
69.1 
Do 
49.9 
Correll's No. 3 
25.0 
39.5 
