
Keywords: خشکی ریشه ای جزئی; Î*; CO2 compensation point in the absence of respiration in the light; Ψ; leaf water potential; Ψpd; leaf water potential at predawn; Ψmd; leaf water potential at midday; δ13C; C-isotope composition; ABA; abscisic acid; Anet; net photosynthetic rates