Table 2. Effect of exogenous 6-BA on active grain filling period and mean grain filling rate of superior and inferior kernels under ambient (AT) and elevated temperature (ET) conditions.
| Cultivar | Treatment | Active grain filling period (d) | Mean grain filling rate (mg per kernel d-1) | |||
|---|---|---|---|---|---|---|
| Superior | Inferior | Superior | Inferior | |||
| Wennong 6 | AT | CC | 30.59 cd | 28.55 a | 1.50 a | 1.33 b |
| 6-BA | 34.28 ab | 28.53 a | 1.47 b | 1.41 a | ||
| ET | HC | 32.54 bc | 26.70 b | 1.36 cd | 1.29 c | |
| H6-BA | 35.56 a | 28.96 a | 1.37 c | 1.30 c | ||
| Jimai 20 | AT | CC | 27.80 e | 23.81 c | 1.26 f | 1.08 e |
| 6-BA | 27.46 e | 24.63 c | 1.34 d | 1.17 d | ||
| ET | HC | 28.70 de | 22.92 d | 1.17 g | 1.05 f | |
| H6-BA | 29.54 de | 22.74 d | 1.30 e | 1.10 e | ||
| P-value | P(H) | 0.0075 | 0.0001 | 0.0001 | 0.0001 | |
| P (G) | 0.0001 | 0.0001 | 0.0001 | 0.0001 | ||
| P (R) | 0.0026 | 0.0021 | 0.0001 | 0.0001 | ||
| P (H×G) | 0.9035 | 0.1026 | 0.0003 | 0.0497 | ||
| P (H×R) | 0.8047 | 0.1227 | 0.0015 | 0.0003 | ||
| P (G×R) | 0.0075 | 0.0585 | 0.0001 | 0.0497 | ||
| P (H×G×R) | 0.3754 | 0.0007 | 0.6768 | 0.2209 | ||
P values (P) for the effects of temperature (H), cultivars (G), 6-BA (R) and their interactions (H × G, H × R, G × R, H × G × R) are shown. Values followed by different letters within the columns are significantly different at the 0.05 probability level.