Relationship between Incidence of Cephalosporium Stripe and Yield Loss in Winter Wheat
Table 2
Percent whiteheads, grain yield, test weight, and grain protein of 10 wheat genotypes noninoculated (U) and inoculated (I) with Cephalosporium gramineum in field plots in Pendleton, Oregon, 2006.
Whiteheads (%)
Grain yield (t ha−1)
Test weight (kg hl−1)
Grain protein (%)
U
I
Changea
U
I
Loss (%)b
U
I
Loss
U
I
Change
Stephens
5.8
47.0
41.3**
5.35
3.64
32.0**
77.15
71.73
5.43**
10.31
11.46
1.15**
Madsen
0.5
13.3
12.8**
5.58
4.20
24.8**
78.05
73.68
4.38**
10.40
10.97
0.57
Tubbs
2.9
35.8
32.9**
5.66
4.03
28.9**
76.95
72.10
4.85**
10.17
10.92
0.75
OR9800919
0.6
9.0
8.4**
5.77
4.95
14.2*
74.28
71.10
3.18**
10.47
10.88
0.42
OR9800924
0.2
1.1
0.9
4.90
4.82
1.7
75.80
74.38
1.43
10.74
10.92
0.18
Rossini
1.1
17.5
16.4**
5.91
4.50
23.8**
77.63
73.93
3.70**
10.02
10.63
0.61
OR02F-B-46
0.4
4.8
4.3**
5.71
4.54
20.6**
72.83
70.30
2.53**
10.31
10.69
0.38
OR02F-C-169
0.5
11.8
11.2**
4.70
3.38
28.1**
78.30
72.88
5.43**
10.29
11.59
1.31**
OR02F-D-27
0.1
5.0
4.9**
5.01
4.59
8.3
71.78
70.33
1.45
9.86
10.47
0.62
WA 7437
0.0
0.0
0.0
4.72
4.27
9.5
78.08
77.85
0.23
11.32
10.49
−0.83*
LSD (0.05)
3.7
3.7
0.63
0.63
1.64
1.64
0.80
0.80
*Significant at the 0.05 probability level. **Significant at the 0.01 probability level.
aSignificance is based on percent whiteheads square root transformed.
bGrain yield loss (%) = (noninoculated − inoculated)/noninoculated * 100.
