Table 1. Treatment effect (TE) between control and drought seedlings at the end of the drought period and after the 27-d recovery period.
Shown are gas-exchange parameters ASAT, gs, and E as well as ΨXylem, RWCNeedle, and WUEi. Values are treatment averages ± se (n = 6 control and n = 10–12 drought-recovery seedlings). –, Treatment effects do not apply to control data.
| Parameter | Treatment | End of Stress | TE | End of Recovery Period | TE |
|---|---|---|---|---|---|
| % | % | ||||
| ASAT (µmol CO2 m−2 s−1]) | Control | 5.7 ± 0.8 | – | 5.2 ± 0.8 | – |
| Drought | −0.3 ± 0.1 | −105.2 | 3.0 ± 0.5 | −43.1 | |
| gs (mmol m−2 s−1) | Control | 63.7 ± 9.7 | – | 50.6 ± 8.6 | – |
| Drought | 2.4 ± 2.4 | −96.2 | 25.0 ± 5.3 | −50.7 | |
| E (mmol m−2 s−1) | Control | 1.3 ± 0.2 | – | 1.4 ± 0.2 | – |
| Drought | 0.05 ± 0.05 | −96.0 | 0.67 ± 0.1 | −51.9 | |
| WUEi (µmol mol−1) | Control | 94.9 ± 15.6 | – | 103.7 ± 4.2 | – |
| Drought | 290.5 ± 213.6 | 206.1 | 123.1 ± 10.1 | 18.7 | |
| ΨXylem (MPa) | Control | −0.87 ± 0.1 | – | −0.63 ± 0.03 | – |
| Drought | −3.25 ± 0.2 | −275.7 | −1.00 ± 0.1 | −60.6 | |
| RWCNeedle (%) | Control | 80.2 ± 0.9 | – | 81.2 ± 1.1 | – |
| Drought | 66.0 ± 2.6 | −17.7 | 79.9 ± 1.2 | −1.7 |