Fig. 2.

Impact of CA on the activity of antioxidant enzymes (A) SOD and CAT and (B) APX and GPX in Pisum sativum L. grown with or without SPD. Data are expressed as mean ± standard error of three independent experiments with three replicates. The values followed by different letters indicate a significant difference at P < 0.05 between treatments according to the ANOVA and DMRT. SPD = 1.0 mM, CA1 = 1 mM, and CA2 = 1.5 mM.