Fig. 2

Effects of NaCl and melatonin on the density of salt gland and total number of salt glands of a single leaf. a-d, the density of salt glands of L. bicolor leaves, 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 density of salt glands of L. bicolor leaves; f, total number of salt glands of a single leaf. Bar = 40 μm. Arrows indicate salt glands. 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