Figure 3.

Leaf area (A) and plant dry mass (B) of mustard (Brassica juncea L.) cv. SS2 at 30 d after sowing. Plants were foliar treated with 100 µM of melatonin and/or 2 mM of SO₄²⁻ (S) and grown with/without high temperature stress (HS; 40 °C for 6 h every day for 15 days). Data are presented as treatment means ± SEs (n = 4). Data followed by the same letter are not significantly different from the LSD test at p < 0.05.