Fig. 2From: Exogenous melatonin enhances the growth and production of bioactive metabolites in Lemna aequinoctialis culture by modulating metabolic and lipidomic profiles Effects of various melatonin treatment concentrations on the growth of L. aequinoctialis culture. Total number of fronds at day 14 (A) and day 28 (B); total dry weight at day 14 (C) and day 28 (D); and dry weight of one frond at day 14 (E) and day 28 (F). Vertical bars and error bars indicate the mean and standard deviation (n = 3) of each treatment group. An asterisk denotes significant differences (p < 0.05) between the control and treatment groups based on the Mann-Whitney testBack to article page