Figure 3

Effects of 1.0 mM melatonin on endogenous melatonin content and relative expression level of TDC during dark-induced gardenia leaf senescence. (A) Endogenous melatonin content. (B) Relative expression level of TDC. The values represent the means ± SDs, and different letters indicate significant differences according to Duncan’s multiple range test (P < 0.05).