Figure 2.
Effect of different light-emitting diode (LED) quality on photosynthesis (A), transpiration (B), stomatal conductance (C), and photosynthetic water use efficiency (D) in the leaves of Rubus hongnoensis. Light quality applied included W, white (as the control) light-emitting diodes (LEDs); R, red LEDs; B, blue LEDs; RGB, combined LEDs of R, green (G), and B at 7:1:2; and RGBFr, combined LEDs of R, G, B, and far-red (Fr) at 7:1:2:1. Data are the mean ± S.E of the 5 biological replicates. Means accompanied by different letters are significantly different (p < 0.05) according to the Duncan’s multiple range test at 5% significance level.