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Leaf water potential (A) and maximum photochemical efficiency (B) at the three sampling dates in 2004 and 2005. Mean values ± s.e. are shown. Upper-case letter M with asterisks indicates significant differences between treatments for male plants, lower-case letters indicate significant differences between genders (c, control; br, bud-removed plants). Asterisks indicate significant differences (* P < 0·05; ** P < 0·01).
