Table 2.
Effect of Spd application on grain yield and yield components at different temperatures before heading.
| Temperature | Spd | Grain yield | Spikelet number (panicle−1) | Sterile spikelets (%) | Partially filled grains (%) | Filled grains (%) | 1000-grain weight (g) |
|---|---|---|---|---|---|---|---|
| NT | −Spd | 86.8 ± 8.4 b | 197.4 ± 4.8 b | 14.3 ± 1.2 b | 3.7 ± 0.4 a | 82.0 ± 0.1 b | 20.2 ± 0.1 b |
| +Spd | 96.5 ± 5.9 a | 207.1 ± 5.6 a | 10.1 ± 1.1 c | 4.3 ± 0.2 a | 84.8 ± 0.1 a | 20.5 ± 0.2 a | |
| HT | −Spd | 61.4 ± 5.6 d | 159.4 ± 7.8 d | 22.0 ± 1.9 a | 3.0 ± 0.4 a | 75.0 ± 2.6 c | 18.6 ± 0.2 d |
| +Spd | 75.1 ± 3.1 c | 178.8 ± 5.2 c | 13.9 ± 1.5 b | 4.0 ± 0.2 a | 82.1 ± 4.8 b | 18.8 ± 0.1 c |
Means±SDs were calculated from the data of five pots. Values followed by different letters within the same column are significantly different at P < 0.05 between the different treatments, including temperature and Spd.