Figure 9. Antioxidative enzyme activities in E. songoricum seedlings among different time points after drought stress (20 % PEG). Activities of superoxide dismutase (SOD) (A), catalase (CAT) (B) and peroxidases (POD) (C) were measured after treatment. Values are mean ± S.E (n = 3). Values with different alphabetical superscripts are significantly different at P<0.05.