P-values obtained using mixed models for leaf gas exchange data. Significant (P < 0.05) factors and interactions are highlighted in bold. E (transpiration); A (net CO2 assimilation); Ca – Ci (CO2 drawdown from the outer air to the substomatal chamber); Ci – Cc (CO2 drawdown from the substomatal chamber to the chloroplasts); SPAD (leaf greenness index).
| E | A | Ca – Ci | Ci – Cc | SPAD | |
|---|---|---|---|---|---|
| Pspecies | 0.000 | 0.000 | 0.001 | 0.000 | 0.000 |
| Pdose | 0.004 | 0.000 | 0.027 | 0.014 | 0.106 |
| Ptime | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Pspecies×dose | 0.407 | 0.044 | 0.072 | 0.025 | 0.287 |
| Pspecies×time | 0.000 | 0.000 | 0.000 | 0.007 | 0.000 |
| Pdose×time | 0.044 | 0.010 | 0.201 | 0.646 | 0.469 |
| Psp×dose×time | 0.535 | 0.206 | 0.000 | 0.007 | 0.042 |