Department of Botany and Department of Soil Science, University of Wisconsin, Madison, Wisconsin 53706.
Plant Physiol. 1969 Oct;44(10):1378-82. doi: 10.1104/pp.44.10.1378.
Water and osmotic potential energies were measured with thermocouple psychrometers, at intervals during a 4-week period, in growing leaves of bean (Phaseolus vulgaris, var. Blue Lake) and barley (Hordeum vulgare, var. Liberty) plants having roots equally split between 2 differentially salinized nutrient solutions. The osmotic potentials of plants with half their roots in saline solutions were about halfway between the osmotic potentials of plants grown in nonsaline solutions and those grown in saline solutions. By the end of the 4-week measurement period, the beans and barley were almost mature. The final dry weights of shoots of plants with half their roots in saline solutions were about halfway between the dry weights of the shoots of plants grown in nonsaline solutions and the dry weights of those in saline solutions. The results obtained showed that the degree of osmotic adjustment and the rate of growth were functions of the proportion of the root system exposed to saline conditions.
在 4 周的时间间隔内，使用热电偶湿度计测量了生长中的豆类（菜豆，变种蓝湖）和大麦（普通大麦，变种自由）叶片中的水和渗透势能，这些植物的根系平均分布在 2 种不同盐化的营养液中。根系一半处于盐溶液中的植物的渗透势在生长于非盐溶液和盐溶液中的植物的渗透势之间。在 4 周的测量期结束时，豆类和大麦几乎成熟。根系一半处于盐溶液中的植物的地上部分的最终干重约为生长在非盐溶液中的植物的地上部分的干重和盐溶液中的植物的地上部分的干重的一半。所得结果表明，渗透调节的程度和生长速率是根系暴露于盐条件的比例的函数。
