Table 2.
Effect of γ‐aminobutyric acid (GABA) and nitrogen on proline accumulation in leaves in different fragrant rice genotypes (μg/g fresh weight (FW))
| Treatment | HS | 15d AH | MS |
|---|---|---|---|
| GABA0 | |||
| YX | |||
| ZN | 21.129 | 6.988 | 9.056 |
| LN | 19.546 | 7.207 | 7.522 |
| MN | 27.310 | 6.300 | 6.571 |
| HN | 15.956 | 8.245 | 9.444 |
| YG | |||
| ZN | 21.341 | 10.250 | 4.837 |
| LN | 14.544 | 11.332 | 5.257 |
| MN | 13.959 | 13.342 | 5.109 |
| HN | 9.199 | 14.543 | 7.708 |
| BS | |||
| ZN | 12.915 | 9.331 | 7.691 |
| LN | 13.901 | 8.496 | 8.685 |
| MN | 16.443 | 6.810 | 8.622 |
| HN | 16.300 | 8.253 | 11.624 |
| Mean | 16.879 | 9.258 | 7.677a |
| GABA250 | |||
| YX | |||
| ZN | 22.918 | 8.671 | 8.357 |
| LN | 17.828 | 6.249 | 7.058 |
| MN | 20.753 | 8.247 | 6.814 |
| HN | 23.858 | 9.287 | 7.796 |
| YG | |||
| ZN | 10.180 | 6.516 | 4.155 |
| LN | 11.692 | 9.819 | 4.205 |
| MN | 11.196 | 10.659 | 5.020 |
| HN | 14.404 | 15.096 | 5.690 |
| BS | |||
| ZN | 13.693 | 8.280 | 8.730 |
| LN | 14.659 | 7.866 | 6.193 |
| MN | 16.506 | 9.113 | 7.792 |
| HN | 16.049 | 9.662 | 8.148 |
| Mean | 16.145 | 9.122 | 6.663b |
| ANOVA | |||
| T | 1.29ns | 0.27ns | 48.11** |
| V | 76.52** | 122.05** | 238.41** |
| T × V | 3.94* | 17.10** | 3.36ns |
| N | 5.61** | 19.44** | 43.24** |
| T × N | 15.14** | 4.09* | 16.37** |
| V × N | 6.42** | 10.53** | 7.69** |
| T × V × N | 9.88** | 2.66* | 4.28** |
Means with different lowercase letter(s) differ statistically at p < .05.
Abbreviations: BS, Basmati‐385; d AH, days after heading; HS, heading stage; MS, maturity stage; YG, Yugengyou14; YX, Yuxiangyouzhan.
*
Significant at p < .05;
**
Significant at p < .01; ns: nonsignificant.