Figure 7.
Net photosynthetic rate, Pn (a); transpiration rate, Trmmol (b); intercellular CO2 concentration, Ci (c); and stomatal conductance, Gs (d) for growing at varying salt stress at 48 h in leaves of plants that were treated with 0.5 mM γ-aminobutyric acid (GABA) or left untreated. Values are mean ± SE. Values with the same letters on the bars are not significantly different at P = 0.05 (LSD test).