Figs. 3 A-E in Copper and zinc interactions: morphophysiological responses in sweet potato plants (Ipomoea batatas L.)

Figs. 3 A-E. Effects of treatments with different Cu and Zn concentrations on antioxidant metabolism in sweet potato plants (Ipomoea batatas L.). A. Superoxide dismutase (SOD); B. Ascorbate peroxidase (APX); C. Catalase (CAT); D. Lipid peroxidation (MDA); E. Hydrogen peroxide (H2O2) content. Means followed by the same lowercase letters, associated with either leaf or root tissues, do not differ significantly from one another based on Tukey's test (p <0.05).