Table 1.
(a) Variation in thermotolerance (T50 of PSII function, Fv /Fm) for well-watered plants of the 12 study species. (b) Variation in thermotolerance (PSII function, Fv /Fm at 47.5 °C) for 11 species under control (well watered) and drought-stressed conditions.
| Effect | df | MS | F | P |
|---|---|---|---|---|
| (a) Thermotolerance—T50 of PSII function (control plants) | ||||
| Species | 11 | 7.39 | 7.61 | <0.001 |
| (b) PSII function at 47.5 °C (control vs. drought) | ||||
| Drought | 1 | 1.26 | 74.13 | <0.001 |
| Species | 10 | 0.1 | 5.88 | <0.001 |
| Drought × Species | 10 | 0.009 | 0.51 | 0.879 |