Table 3.
Parameters of Chl a fluorescence which are showing additive effects of dual stress in wheat leaves
| Parameters | 25 °C | 35 °C | 40o C | 45 °C | ||||
|---|---|---|---|---|---|---|---|---|
| −NaCl | +NaCl | −NaCl | + NaCl | −NaCl | + NaCl | −NaCl | +NaCl | |
| α centers | 72 ± 1 | 50 ± 2 | 61 ± 1 | 49 ± 2 | 57 ± 1 | 44 ± 2 | 45 ± 1 | 39 ± 2 |
| β centers | 25 ± 1 | 28 ± 1 | 26 ± 2 | 29 ± 1 | 28 ± 1 | 30 ± 3 | 42 ± 1 | 34 ± 1 |
| γ centers | 3 ± 1 | 22 ± 2 | 14 ± 1 | 22 ± 3 | 15 ± 1 | 26 ± 2 | 13 ± 3 | 27 ± 2 |
| Mo (TR/RC) | 0.97 ± 0.004 | 0.996 ± 0.001 | 1.000 ± 0.040 | 1.040 ± 0.037 | 1.152 ± 0.031 | 1.327 ± 0.019 | 3.057 ± 0.075 | 3.96 ± 0.040 |
| Fv/Fo | 3.45 ± 0.01 | 3.053 ± 0.02 | 3.16 ± 0.01 | 3.007 ± 0.004 | 1.715 ± 0.01 | 1.41 ± 0.02 | 0.347 ± 0.01 | 0.32 ± 0.001 |