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Initial fluorescence—F0 (A), maximum fluorescence—Fm (B), variable fluorescence—Fv (C), and quantum efficiency of photosystem II—Fv/Fm (D) of sour passion fruit as a function of the levels of ECw at 360 days after transplanting. ** Significant at p ≤ 0.01. Vertical lines represent standard error of the mean (n = 3).
