Table 1.
Grain yield and yield components of three wheat cultivars (CW134, CH58, and CH1) under moderate drought stress (MD) and well-watered conditions (WW; 2015 Rhizobox experiment), or under rainfed (RF) and irrigated (IR) conditions (2016 Field trial).
| Treatments | Grain yield (g) | Spike number | No. of grains | TKW (g) | HI | |
|---|---|---|---|---|---|---|
| 2015 Rhizobox experiment | ||||||
| MD | CW134 | 2.24 d | 4.29 b | 66.4 d | 34.2 c | 0.23 c |
| CH58 | 2.39 c | 4.80 b | 73.6 c | 33.7 c | 0.23 c | |
| CH1 | 2.40 c | 4.67 b | 69.9 cd | 36.1 b | 0.29 a | |
| WW | CW134 | 3.53 b | 6.22 a | 109 b | 36.8 b | 0.23 c |
| CH58 | 3.69 b | 5.33 ab | 116 a | 36.8 b | 0.23 c | |
| CH1 | 4.09 a | 5.89 a | 119 a | 38.2 a | 0.26 b | |
| Cultivar | ∗ | ns | ∗ | ∗ | ∗∗ | |
| Water | ∗∗ | ∗∗ | ∗∗ | ∗ | ns | |
| Cultivar × Water | ∗∗ | ∗∗ | ∗∗ | ns | ∗ | |
| 2016 Field trial | ||||||
| RF | CW134 | 410 d | 519 cd | 896 d | 45.8 d | 0.28 c |
| CH58 | 475 c | 540 c | 988 bc | 46.4 d | 0.31 b | |
| CH1 | 458 c | 499 d | 964 c | 49.3 b | 0.34 a | |
| IR | CW134 | 483 c | 531 c | 1025 b | 47.2 c | 0.29 c |
| CH58 | 511 b | 565 b | 1083 a | 47.3 c | 0.32 b | |
| CH1 | 567 a | 629 a | 1110 a | 51.1 a | 0.34 a | |
| Cultivar | ∗ | ∗ | ∗∗ | ∗ | ∗ | |
| Water | ∗∗ | ∗∗ | ∗ | ∗ | ns | |
| Cultivar × Water | ns | ns | ∗∗ | ns | ns | |
Data for rhizobox experiment were calculated for each rhizobox, and for the field trial on one square meter. TKW, thousand-kernel-weight; HI, harvest index. For each experiment, values in a column followed by the same letter are not significantly different at P < 0.05 as determined by the Duncan’s test. For ANOVA results in each experiment, ∗P < 0.05, ∗∗P < 0.01, ns, not significant.