Fig. 5.

Effects of NaCl and melatonin on salt secretion of salt glands of L. bicolor leaves. a-d, the ability of salt secretion of leaves with leaf disc method, a, 0 + 0, 0 mM NaCl+ 0 μM MT; b, 0 + 5, 0 mM NaCl+ 5 μM MT; c, 300 + 0, 300 mM NaCl+ 0 μM MT; d, 300 + 5, 300 mM NaCl+ 5 μM MT; e, The total amount of Na⁺ secreted by a single leaf; f, the total amount of Na⁺ secreted by a salt gland. The values are the average of five biological repeats ± standard deviation. According to Duncan’s multi-range tests, bars that there were significant differences at P < 0.05 are labeled with different letters