Table 2.
Effect of Fusarium head blight caused by F. graminearum and F. culmorum on spectral vegetation indices of wheat spikelets compared with the non-inoculated control.
| Index | Treatment | Time [dai] | ||||||
|---|---|---|---|---|---|---|---|---|
| 3 | 5 | 7 | 12 | 17 | 21 | 30 | ||
| NDVI | Non-inoculated control F. graminearum F. culmorum |
0.77 a 0.72 a 0.75 a |
0.76 a 0.70 a 0.75 a |
0.77 a 0.68 a 0.72 a |
0.77 a 0.52 b 0.55 b |
0.76 a 0.47 b 0.46 b |
0.74 a 0.38 b 0.40 b |
0.55 a 0.30 b 0.24 b |
| PRI | Non-inoculated control F. graminearum F. culmorum |
−0.01 a −0.02 a −0.02 a |
−0.01 a −0.02 a −0.02 a |
−0.02 a −0.03 b −0.03 b |
−0.02 a −0.04 b −0.04 b |
−0.02 a −0.05 b −0.05 b |
−0.03 a −0.06 b −0.06 b |
−0.06 a −0.06 a −0.06 a |
| PSSRa | Non-inoculated control F. graminearum F. culmorum |
7.10 a 5.85 b 6.46 ab |
6.72 a 5.29 b 6.56 a |
7.21 a 4.96 b 5.81 b |
6.99 a 3.29 b 3.48 b |
6.63 a 2.81 b 2.73 b |
6.29 a 2.28 b 2.39 b |
3.50 a 1.86 b 1.57 b |
| PSSRb | Non-inoculated control F. graminearum F. culmorum |
5.53 a 4.74 b 5.02 ab |
5.27 a 4.42 b 5.11 a |
5.58 a 4.24 b 4.65 b |
5.44 a 3.03 b 3.16 b |
5.19 a 2.67 b 2.59 b |
4.94 a 2.23 b 2.33 b |
2.99 a 1.90 b 1.64 b |
| PSSRc | Non-inoculated control F. graminearum F. culmorum |
6.85 a 5.88 a 6.39 a |
6.47 a 5.76 a 6.75 a |
6.96 a 5.68 b 6.50 a |
7.18 a 4.53 b 4.91 b |
6.95 a 4.22 b 4.18 b |
6.94 a 3.67 b 3.96 b |
4.96 a 3.31 b 2.83 b |
| WI | Non-inoculated control F. graminearum F. culmorum |
1.14 a 1.14 a 1.14 a |
1.14 a 1.13 a 1.13 a |
1.15 a 1.11 b 1.10 b |
1.16 a 1.05 b 1.05 b |
1.15 a 1.03 b 1.03 b |
1.15 a 1.02 b 1.02 b |
1.12 a 1.01 b 1.00 b |
NDVI, normalized difference vegetation index; PRI, Photochemical reflection index; PSSRa, Pigment-specific simple ratio chlorophyll a; PSSRb, Pigment-specific simple ratio chlorophyll b; PSSRc, Pigment-specific simple ratio carotenoid; WI, Water index. Within one column, lowercase letters indicate significant differences between the parameters (Tukey’s HSD; P ≤ 0.05, n = 6).