Table 3.
Measurements of physiological parameters in plants inoculated or not with mycorrhizal fungi and exposed or not to a long-term heat stress treatment. Values indicate mean ± standard error (n = 5). Different letters indicate significant differences in group means according to pairwise multiple comparisons conducted using the simulation method of Edwards and Berry [70]. Significant effect, p-value < 0.05.
| Mycorrhizal Treaments | Relative Electrolite Leakage (%) | Stomatal Conductance (mmol. m2.s−1) | Ratio of Variable to Maximum Chlorophyll Fluorescence (Ratio) | Relative Chlorophyll Content (SPAD Units) | ||||
|---|---|---|---|---|---|---|---|---|
| Before Stress | After 5-Day Exposure to Heat Stress | Before Stress | After 5-Day Exposure to Heat stress | Before Stress | After 5-Day Exposure to Heat Stress | Before Stress | After 5-Day Exposure to Heat Stress | |
| Non-inoculated | 4.51 ± 0.438 | 3.63 ± 0.121 | 67 ± 8.5 b | 119 ± 19.6 ab |
0.7587 ± 0.0046 | 0.7579 ± 0.0047 | 4.24 ± 0.327 | 5.47 ± 0.282 |
| Inoculated with R. irregulare | 5.11 ± 0.583 | 3.81 ± 0.255 | 58 ± 1.8 b | 228 ± 29.0 a |
0.7625 ± 0.0077 | 0.7574 ± 0.0031 | 4.32 ± 0.186 | 5.91 ± 0.303 |
| Inoculated with F. mosseae | 4.21 ± 0.219 | 3.90 ± 0.160 | 65 ± 7.8 b | 190 ± 8.8 a |
0.7606 ± 0.0046 | 0.7552 ± 0.0046 | 4.69 ± 0.259 | 5.67 ± 0.478 |