【摘要】 本文选取了两个小麦品种（商丘碱麦和济源728）在人工气候室液体培养条件下,对盐渍胁迫下的几个不同生理反应进行了研究。两品种地上部器官生长量均随盐（NaCl:Na₂SO₄,7:3,w/w）浓度增加而降低。商丘碱麦的地上部生长量受盐渍胁迫影响较小,它的抗盐性较强:济源728品种地上部生长量受盐渍胁迫影响较大,它的抗盐性较弱。经盐溶液处理后,两个品种的水势和吸水率均显著降低。品种之间表现出一定差异,商丘碱麦水势低于济源728,吸水力大于济源728。叶细胞膜透性随盐浓度和处理时间而加大。抗盐性较弱的济源728透性大于商丘碱麦,细胞膜破坏程度较大。更多还原

【Abstract】 Different physiological responses of two wheat varieties（Shang—QiuJian—Mai and JiYuan 728）cultured in nutrient solutions were studied in the phytotron. The shoot growth of two varieties decreased with increasing salt（NaCl:Na₂SO₄, 7:3,w/w）concentration,and JiYuan 728 was influenced more than Shang QiuJian-Mai,therefore the fomer variety was more salt-sensitive than the latter.After treated with the solutions the water potentials of leaves were obviously decreased·The water uptake power of ShangOiuanMai which had lower water potentials of leaves was stronger than that of JiYuan728。The permeability of plasma membrane was enlarged with increasing salt concen- trafion and prolongation of treatment time,and permeability in JiYuan 728 was more seriously damaged by salt solution.更多还原