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Predawn (Ψpredawn) and midday (Ψmidday) leaf water potentials in (A) evergreen Q. glauca and (B) deciduous Q. serrata, and leaf water potential at the turgor loss point (Ψtlp) in (C) Q. glauca and (D) Q. serrata. Measurements were conducted in Osaka. Values are means±s.d.
