NaCl胁迫对怀牛膝种子萌发、幼根生长以及K、Ca、Fe含量的影响  

Effects of NaCl Stress on Seed Germination,Root Growing and Content of Trace Element on Achyranthes bidentata Bl.

作　　者：丁笑生[1] 段红英[1] 宋建英[1] 何云龙[1] 段志强[1] 李新伟[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007

出　　处：《河南农业科学》2010年第4期91-94,共4页Journal of Henan Agricultural Sciences

基　　金：河南省教育厅基础研究项目(2009A180009);河南省高等学校青年骨干教师资助计划项目

摘　　要：以中草药怀牛膝的2个品种核桃纹和风筝棵为材料,研究了NaCl胁迫对怀牛膝种子萌发、幼根生长以及K、Ca、Fe元素含量的影响。研究发现,高浓度NaCl对怀牛膝种子发芽率和根长有明显的影响,与对照相比,NaCl处理的怀牛膝种子发芽率极低,且根生长缓慢,没有形成侧根。通过原子吸收光谱法检测,发现风筝棵和核桃纹中均含有K、Ca、Fe元素,核桃纹中K、Ca的含量高于风筝棵中的,而风筝棵中的Fe含量明显高于核桃纹中的。62.5 mmol/L NaCl处理使怀牛膝中K、Ca、Fe元素含量都降低。但是,NaCl胁迫对核桃纹品种的影响大于对风筝棵的影响。以上研究结果表明,NaCl胁迫对怀牛膝2个品种核桃纹和风筝棵的发芽率、幼根生长以及K、Ca、Fe等元素含量都有不同程度的影响。Two cultivars of Achyranthes bidentata B1. （Fengzhengke and Hetaowen）, Chinese medicinal herb, were subjected to NaCl stress. The seed germination and root growing were determined and the content of trace element were examined by atomic absorption spectrometry. High concentration of NaCl could obviously affect the germination of seed and length of root. The germination ratio of seeds treated with NaCl was lower extremely than that of CK, the root grew slowly, and there were no lateral roots formed. The content of K, Ca in Hetaowen was higher than that in Fengzhengke, but the content of Fe in Fengzhengke was obviously higher than that in Hetaowen. Further more, the contents of K, Ca and Fe were all reduced in Achyranthes bidentata treated with 62.5mmol/L NaC1, and the effect of NaCl on Hetaowen was more significant than that on Fengzhengke.

关 键 词：怀牛膝 萌发 根 微量元素 NACL胁迫 

分 类 号：S567[农业科学—中草药栽培]