Figure 9.

Impact of individual and combinatorial application of SNP and NaHS on enzymatic antioxidative enzymes, i.e., SOD activity in the roots (A), SOD activity in the leaves (B), POD activity in the roots (C), POD activity in the leaves (D), CAT activity in the roots (E), CAT activity in the leaves (F), APX activity in the roots (G), and APX activity in the leaves (H) of spinach (S. oleracea) plants grown under different levels of Cr [0 (no Cr), 150, and 300 μM] in sandy loam soil. Values in the figures indicate just one harvest. Mean ± SD (n = 4). Two-way ANOVA was performed and mean differences were tested by HSD (P < 0.05). Different lowercase letters on the error bars indicate significant differences between the treatments.