Table 2.
Changes in leaf relative water content, and the photosynthetic and chlorophyll fluorescence parameters in response to P application under well-watered and drought conditions.
| Traits | Well-watered | Water-stressed | ||
|---|---|---|---|---|
| −P | + P | −P | + P | |
| LRWC (%) | 72.06 ± 3.7a | 73.93 ± 2.29a | 47.3 ± 1.49c | 59.17 ± 2.77b |
| Pn (µmol m−2 s−1) | 6.68 ± 0.59b | 8.83 ± 0.6a | 1.46 ± 0.31d | 2.97 ± 0.21c |
| Ci (µmol mol−1) | 223.79 ± 8.9a | 236.43 ± 14.5a | 158.49 ± 12.14b | 196.05 ± 11.31ab |
| Gs (mol m−2 s−1) | 0.08 ± 0.01ab | 0.09 ± 0.01a | 0.04 ± 0.01b | 0.06 ± 0.01ab |
| E (mmol m−2 s−1) | 2.69 ± 0.24a | 3.29 ± 0.39a | 1.04 ± 0.26b | 1.28 ± 0.2b |
| F v /F m | 0.76 ± 0.06a | 0.79 ± 0.03a | 0.55 ± 0.05b | 0.53 ± 0.06b |
Means followed by different letters indicate significant differences (P ≤ 0.05) among the four treatments according to Duncan’s test. Values are means ± SE.