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The relative water content (RWC) of leaves from H. rosa-sinensis plants at the start of the experiment (control) and after exposure to three photoperiods (18 h, 60 μmol·m−2·s−1 photosynthetic photon flux density (PFFD) and 35 °C) with reduced irrigation (water deficit). The stress photoperiods were separated by 6 h night-periods at 24 °C. The values are the means ± SE from four independent replicates.
