Fig. 6
Top-10 accumulation metabolites in different treatment comparisons of the melatonin-treated cotton seedlings exposed to stress. The heatmap shows log2 foldchange values of the differentially accumulated metabolites, where red to green colors show increasing values. Where CK = 0.8% salt stressed, B1, B2, B3, and B4 = 0.8% salt-stressed seedlings exogenously sprayed with 100 ml of 50 μM, 100 μM, 200 μM, and 500 μM melatonin solution, respectively