Table 3 Drought and heat stress interactions on the physiological traits of okra plants.
Trait | TC | TD | TH | TD + H | ED + H | TD + H | Nature of effect |
|---|---|---|---|---|---|---|---|
Chlorophyll content | 31.6 | 30.6 | 28.9 | 27.6 | 27.8 | 27.6 | Additive |
Electrolyte leakage | 43.9 | 41.8 | 35.8 | 34.5 | 33.8 | 34.5 | Antagonistic |
Fv-Fm ratio | 0.8 | 0.8 | 0.7 | 0.6 | 0.7 | 0.6 | Additive |
Performance index | 4.7 | 4.1 | 3.3 | 3.3 | 2.8 | 3.3 | Additive |
Relative water content | 86.6 | 81.5 | 77.8 | 70.5 | 72.7 | 70.5 | Synergistic |
Dry shoot biomass | 3.0 | 2.8 | 2.2 | 2.0 | 2.1 | 2.0 | Additive |
Total leaf area | 30.1 | 29.8 | 28.6 | 28.1 | 28.3 | 28.1 | Additive |
