Table 3.
Net photosynthesis, Apparent quantum yield, dark respiration and maximum efficiency of photosystem ii (fv/fm) under different evapotranspiration replacement status.
| Evapotranspiration | Net Photosynthesis | Apparent quantum yield | Dark respiration rate (Rd) | Maximum efficiency of photosystem II |
|---|---|---|---|---|
| replacement | (A) | (ɸ) | (µmol/m2/s) | (fv/fm) |
| (µmol/m2/s) | (µmol/m2/s) | |||
| 100% | 10.75 ± 0.01 a | 0.08 ± 0.01 a | 4.61 ± 0.21 d | 0.84 ± 0.01 a |
| 75% | 7.21 ± 0.22 b | 0.06 ± 0.02 b | 12.71 ± 0.23 c | 0.81 ± 0.02 b |
| 50% | 3.41 ± 0.12 c | 0.04 ± 0.07 c | 14.75 ± 0.13 b | 0.72 ± 0.06 c |
| 25% | 1.72 ± 0.13 d | 0.01 ± 0.04 d | 15.64 ± 0.14 a | 0.66 ± 0.04 d |
All analyses are mean ± standard error of mean (SEM); N = 60 Means not sharing a common letter within a column are significantly different at p ≤ 0.05.