Fig. 1From: Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organsEffects of melatonin on gas-exchange parameters of cotton seedling under salt stress. Control (CK) and salt-treated (S) plants were sprayed with distilled water, while S + MT50, S + MT100, S + MT200, and S + MT500 plants were sprayed with 50, 00, 200, and 500 μM MT, respectively. Different lowercase letters indicate significant differences at the p ≤ 0.05 levelBack to article page