Figure 2.

Effect of salinity stress alone or combined with exogenous melatonin on antioxidant system components in peanut seedlings after 6 h and 15 days. (A) Reduced glutathione (GSH), (B) ascorbate (AsA), (C) oxidized glutathione (GSSG), (D) dehydroascorbate (DHA), (E) the ration of GSh/GSSH, and (F) the ratio of AsA/DHA. Data are means ± SD (n = 3) from three independent experiments. The bars labelled with different letters are significantly different. The significant difference marked by different letters was calculated using the Student’s t-test and further analyzed with the Fisher LSD test, at p ≤ 0.05. The legends are as follows: Control: 0 NaCl + 0 MT, T1: 150 mM NaCl + 0 MT, T2: 150 mM NaCl + 50 μM MT, T3: 150 mM NaCl + 100 μM MT, T4: 150 mM NaCl + 150 μM MT.