Fig. 3.

Effect of water deficit on the activities of antioxidant-related enzymes in C. humilileaves. a O₂ ^- generation rate and H₂O₂ content; b superoxide dismutase (SOD) and peroxidase (POD); c catalase (CAT) and glutathione peroxidase (GPX); d ascorbate peroxidase (APX) and monodehydroascorbate reductase (MDHAR); e dehydroascorbate reductase (DHAR) and glutathione reductase (GR); f glutathione S-transferase (GST) and glycolate oxidase (GO). Values are means ± SE. based on four independent determinations after plants were treated for 0, 6, 12, and 24 days of water deficit, and bars indicate standard deviations. * and ** indicate values that differ significantly from controls at p ≤ 0.05 and p ≤ 0.01, respectively, according to LSD test