Table 1.
Effect of salt-treatment on photosynthetic indexes of Chinese cabbage. The values are the means (±SD) of 10 replicates.
| NaCl Concentration | Pn/µmol (CO2) m−2∙s−1 | Gs/mmol (H2O) m−2∙s−1 | Ci/µmol∙mol−1 | Tr/mmol (H2O) m−2∙s−1 |
|---|---|---|---|---|
| 0 mM | 15.72 ± 1.02 a | 141.7 ± 19.0 a | 193.8 ± 17.9 a | 2.30 ± 0.14 a |
| 100 mM | 11.92 ± 0.89 b | 84.7 ± 8.5 b | 151.7 ± 13.1 b | 1.48 ± 0.12 b |
| 200 mM | 9.58 ± 0.87 c | 58.0 ± 5.6 c | 114.5 ± 14.8 c | 1.17 ± 0.11 c |
| 300 mM | 5.20 ± 1.23 d | 26.2 ± 6.4 d | 88.2 ± 12.7 d | 0.57 ± 0.10 d |
| 400 mM | 2.13 ± 0.34 e | 10.5 ± 3.8 e | 67.8 ± 7.6 e | 0.26 ± 0.07 e |
Pn, Leaf net photosynthetic rate; Gs, stomatal conductance; Ci, internal CO2 concentration; Tr, transpiration rate. Means followed by different letters indicate significant differences (p < 0.05).