Fig. 9

Transections of cotton seedling leaf blade and stem affected by the application of melatonin and salt stress. (A, D): CK. (B, E): S. (C, F): S + MT200. Control (CK) and salt-treated (S) plants were sprayed with distilled water, while S + MT200 was sprayed with 200 μM MT. Uep upper epidermis, pp plastid parenchyma, sp sponge parenchyma, lep lower epidermis, xv xylem vessels, phv phloem vessels, cor cortex, pi pith. Bars in the rectangular cross section = 100 μm