Table 6.
Effect of γ‐aminobutyric acid (GABA) and nitrogen on PDH activity in leaves in different fragrant rice genotypes (U/g FW)
| Treatment | HS | 15d AH | MS |
|---|---|---|---|
| GABA0 | |||
| YX | |||
| ZN | 10.199 | 11.685 | 8.765 |
| LN | 11.310 | 9.203 | 8.204 |
| MN | 9.132 | 12.794 | 12.783 |
| HN | 8.364 | 14.100 | 16.545 |
| YG | |||
| ZN | 12.046 | 8.838 | 8.450 |
| LN | 10.854 | 9.262 | 7.812 |
| MN | 9.890 | 8.341 | 9.441 |
| HN | 7.841 | 4.548 | 8.603 |
| BS | |||
| ZN | 12.216 | 12.417 | 8.933 |
| LN | 18.202 | 12.989 | 7.712 |
| MN | 11.141 | 15.156 | 9.650 |
| HN | 16.070 | 11.131 | 8.168 |
| Mean | 11.278 | 10.872 b | 9.589 |
| GABA250 | |||
| YX | |||
| ZN | 14.581 | 11.497 | 13.909 |
| LN | 13.485 | 14.091 | 17.909 |
| MN | 11.184 | 12.768 | 9.088 |
| HN | 13.766 | 12.085 | 8.281 |
| YG | |||
| ZN | 8.140 | 10.907 | 13.768 |
| LN | 10.978 | 8.476 | 11.693 |
| MN | 10.439 | 9.232 | 11.152 |
| HN | 11.815 | 9.101 | 7.455 |
| BS | |||
| ZN | 15.938 | 18.453 | 17.408 |
| LN | 12.453 | 15.353 | 22.175 |
| MN | 13.292 | 16.744 | 9.976 |
| HN | 13.742 | 18.318 | 9.430 |
| Mean | 12.484 | 13.086 a | 12.687 |
| ANOVA | |||
| T | 4.92ns | 32.40* | 6.39ns |
| V | 52.90** | 55.07** | 1.89ns |
| T × V | 15.72** | 4.56* | 2.64ns |
| N | 3.06* | 0.63ns | 3.09* |
| T × N | 2.47ns | 0.68ns | 14.36** |
| V × N | 0.84ns | 0.89ns | 1.69ns |
| T × V × N | 4.43** | 1.92ns | 1.66ns |
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.