FIGURE 7.
Effect of various levels of salinity on photosynthetic parameters of S. persica seedlings. (A) Net photosynthetic rate (PN); (B) stomatal conductance (gs); (C) intercellular CO2 concentration (Ci); (D) transpiration rate (E), and (E) water use efficiency (WUE). The values are mean ± SD (n = 6). The different letters on the top of the error bars indicate statistically different means at P ≤ 0.05.