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. 2021 Oct 7;12:752584. doi: 10.3389/fpls.2021.752584

Figure 3.

Figure 3

Effects of exogenous melatonin on photosynthesis. (A) Maximum PSII quantum yield (Fv/Fm). (B) Non-photochemical quenching (NPQ). (C) Net photosynthetic rate (Pn). (D) Stomatal conductance (gs). Others are the same as in Figure 1.