Figure 1.

Effect of exogenous melatonin on malondialdehyde (MDA), H₂O₂, and proline contents (µmol g⁻¹ FW) in peanut seedlings under salinity stress after 6 h and 15 days. (A) Malondialdehyde (MDA), (B) H₂O₂, and (C) proline. Data are means ± SD (n = 3) from three independent experiments. The bars labelled with different letters are significantly different at p ≤ 0.05. 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 melatonin (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.