Fig. 2

Effects of melatonin (5 μM) on (A) transpiration rate (Tr), (B) stomatal conductance (gs), (C) net photosynthetic rate (Pn), (D) inter cellular CO2 concentration (Ci), (E) intrinsic water use efficiency (WUEint), (F) instantaneous water use efficiency (WUEins), (G) total chlorophyll, chlorophyll a, chlorophyll b content of L. bicolor seedlings subjected to 300 mM NaCl for 15 days. Values are mean ± standard deviation of five biological replicates. Bars labeled with different letters are significantly different at P < 0.05 according to Duncan’s multiple range tests. Chl, Chlorophyll