NaCl抑制棉花幼苗生长的机理——盐离子效应

被引：63

作者：

赵可夫

机构：

[1] 山东师范大学生物系济南

来源：

植物生理学报 | 1989年 / 02期

关键词：

棉花; 叶面积; 叶相对扩展率; 质膜透性; 渗透势; 蒸腾; 盐离子;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

75和150 mmol/L NaCl处理.降低棉花幼苗叶面积、叶相对扩展率,蒸腾和木质部汁液K+浓度;而增大叶细胞质膜透性、渗透势、叶Na+含量和木质部汁液Na+和Cl-的浓度。生长在75mmol/L NaCl加压（根际）和不加压条件下的棉花,叶面积、叶相对扩展率、蒸腾、叶质膜透性和渗透势的变化基本一样。这些结果表明棉花幼苗的拒盐能力不大,盐害的原因是盐的原初效应,而不是盐的次生效应。另外,盐对棉花幼苗叶相对扩展率和质膜透性的效应在生长后期降低,表明棉花幼苗也具有一定的耐盐能力。

引用

页码：173 / 178

页数：6

共 8 条

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