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一植物组织的吸水力,是细胞在一定条件下自环境中取得水分的势能。它的大小决定于细胞液的渗透压和紧张压之差值(Thoday,1918;Hafler,1920;Ursprung,1935;Meyer,1938;Crafts,1946等)。细胞吸水力的研究,对于探讨植物体内水分移动的机制,以及阐明细胞和水分关系来说极其重要。近年来,苏联植物生理学家进一步提出吸水力乃是细胞充水程度的良好指标;它的数
The absorption of water by a plant tissue is the potential energy of the cell to extract moisture from the environment under certain conditions. Its size is determined by the difference between the osmotic pressure and the tension pressure of the cytosol (Thoday, 1918; Hafler, 1920; Ursprung, 1935; Meyer, 1938; Crafts, 1946, etc.). The study of cellular water uptake is extremely important for exploring the mechanisms of water movement in plants and for clarifying the relationship between cells and water. In recent years, Soviet plant physiologists have further suggested that water absorption is a good indicator of the degree of cell filling; its number