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. 2020 Jul 6;20:318. doi: 10.1186/s12870-020-02523-z

Fig. 5.

Fig. 5

Effects of different light treatments on chlorophyll fluorescence parameters: (a) Fv/Fm, maximum photochemical efficiency of PSII; (b) ΦPSII, actual PSII photochemical efficiency; (c) Fv/Fm, maximum photochemical efficiency of PSII under light adaptation of sweet pepper seedlings at 28 day after treatment. Data are presented as means ± SE, n = 3. Different letters indicate significant differences between values (p < 0.05). W, white light; R, monochromatic R light; B, monochromatic B light; RB, mixed R and B light of 3:1