Table 1.
Correlations among photosynthetic characteristics of Leymus chinensis leaf in field and greenhouse conditions.
| Photosynthetic characteristics | Field |
Common garden |
||
|---|---|---|---|---|
| r | significance | r | Significance | |
| PN – gs | 0.95 | ∗∗ | 0.92 | ∗∗ |
| PN – Ci | 0.16 | ns | -0.20 | ∗ |
| PN – E | 0.95 | ∗∗ | 0.90 | ∗∗ |
| PN – WUE | 0.08 | ns | 0.13 | ns |
| gs – Ci | 0.39 | ∗∗ | 0.19 | ∗ |
| gs – E | 0.99 | ∗∗ | 0.90 | ∗∗ |
| gs – WUE | -0.15 | ns | -0.06 | ns |
| Ci – E | 0.37 | ∗∗ | -0.06 | ns |
| Ci – WUE | -0.84 | ∗∗ | -0.37 | ∗∗ |
| E – WUE | -0.19 | ns | -0.30 | ∗∗ |
PN, Net photosynthetic rate; gs, Stomatal conductance; Ci, Intercellular carbon dioxide concentration; E, Transpiration rate; and WUE, water use efficiency. ∗∗P < 0.01; ∗P < 0.05; ns, P > 0.05.