Figure 2.

Changes in photosynthesis and gas exchange parameters under individual and combined stresses. (I) Transpiration rate (E), (II) stomatal conductance (gs), (III) net photosynthesis (Pn), and (IV) CO₂ assimilation rate (A) in four eggplant varieties. Data presented are the means ± SE (n = 5). Significant dissimilarities are shown by different lower-case letters between treatments (p ≤ 0.05) based on Tukey’s test. (C, control; H, heat stress; D, drought stress; H + D, heat + drought stresses).