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Predawn water potential (upper panels) and midday water potential (SWP) (lower panels) for the heated (red bars) and control (blue bars) treatments for Bonarda, Syrah, and Malbec. Measurements were carried out on 6 November 2019 (left panels) and 16 November 2020 (right panels). Bars represent means of three replicates ± standard error. Asterisks (*) in the heated bars indicate significant differences compared to the control at p < 0.05, according to the DGC test.
