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常夏石竹耐盐突变体渗透调节的研究
王长泉;刘涛;
1.山东理工大学基建处;2.山东理工大学生命科学学院 山东淄博255049;3.山东淄博255049
摘要:
在离体培养条件下利用γ-射线作诱变剂获得耐0.5%、0.7%、1.0%NaCl的突变系,通过对稳定突变系植株叶片渗透剂含量及对渗透势贡献大小的测定表明耐盐突变体叶中K+、游离氨基酸、Na+、脯氨酸的含量高于对照,其中脯氨酸和Na+积累最明显。而叶片中可溶性糖的含量、K+/Na+低于对照。Na+对突变体植株叶片渗透势贡献最大,是最主要的渗透调节剂之一。耐盐突变体植株内存在渗透物质的再分配,叶内有吸钾排钠现象。
关键词:  常夏石竹    离体培养    γ-射线    耐盐突变体    渗透调节
DOI:
分类号:
Fund project:山东理工大学科研基金资助~~
Abstract:
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