Relationship between Incidence of Cephalosporium Stripe and Yield Loss in Winter Wheat
Table 4
Percent whiteheads, grain yield, test weight and grain protein of 12 wheat genotypes noninoculated (U) and inoculated (I) with Cephalosporium gramineum in field plots in Moro, Oregon, 2007.
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
10.0
52.5
42.5**
4.26
2.51
41.2**
77.62
74.81
2.81**
9.03
8.70
−0.33
Madsen
6.8
18.3
11.5**
4.10
3.57
13.1*
78.17
77.33
0.84
9.88
8.25
−1.63**
Tubbs
11.8
45.0
33.3**
3.82
2.88
24.6**
76.03
74.16
1.87**
9.00
8.75
−0.25
OR9800919
2.8
31.8
29.0**
5.01
3.51
30.0**
74.19
72.45
1.74**
7.43
8.15
0.73
OR9800924
4.3
26.3
22.0**
4.44
3.41
23.2**
74.87
74.68
0.19
7.80
9.15
1.35**
Rossini
1.5
14.5
13.0**
4.21
3.58
14.8*
77.94
76.07
1.87**
8.83
8.18
−0.65
OR02F-B-46
22.5
44.3
21.8**
3.41
2.71
20.7**
72.71
72.77
−0.06
8.80
9.23
0.42
OR02F-C-169
7.8
42.5
34.8**
3.80
2.43
36.0**
77.97
76.87
1.10
9.85
9.30
−0.55
OR02F-D-27
14.0
34.3
20.3**
4.12
2.81
31.6**
73.58
73.19
0.39
7.68
8.15
0.48
WA 7437
7.5
12.8
5.3
3.15
2.76
12.3
76.94
76.00
0.94
8.53
8.50
−0.03
Skiles
6.8
35.0
28.3**
4.65
3.41
26.6**
79.43
78.00
1.42*
8.38
8.80
0.43
ORSS-1757
5.0
37.5
32.5**
4.07
3.10
23.6**
77.91
76.87
1.03
7.93
7.80
−0.13
LSD (0.05)
8.6
8.6
0.47
0.47
1.27
1.27
1.02
1.02
*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.
