期刊论文

中文

生态环境学报

1674-5906

2005

14

6

860-864

10.16258/j.cnki.1674-5906.2005.06.013

教育部青年骨干教师基金项目（2000科教司65号）； 湖南省教育厅青年基金项目（99B05）；

本校为第一机构

以黄瓜幼苗为材料,采用高效液相色谱法测定黄瓜幼苗叶和茎中内源多胺的含量,研究了铅胁迫下黄瓜幼苗生长及内源多胺的变化.结果表明:铅质量浓度为100 mg·L-1时促进黄瓜幼苗的生长,铅质量浓度高于100 mg·L-1时,黄瓜幼苗茎高和根长逐渐下降;铅胁迫下黄瓜幼苗地上部的腐胺含量明显高于对照值,且随着铅质量浓度增加和处理时间的延长呈下降趋势.黄瓜幼苗叶片精胺和亚精胺在处理第5 d时高于对照值,茎中精胺和亚精胺含量在处理第7 d高于对照值,而其它时间内的都低于对照值,而且其含量均随铅质量浓度的增加而呈下降趋势;过氧化物酶活性变化与内源多胺含量(腐胺、精胺和亚精胺之和)的变化相似,表明铅胁...

Using cucumber seedlings as the material, the endogenous polyamines were measured using the HPLC, changes of growth and endogenous polyamines under lead stress were studied. The results indicated that the growth of seedlings was accelerated at lead mass concentration of 100 mg·L^-1, when lead mass concentration exceeded 100 mg·L^-1, stem height and root length of seedlings were gradually decreased with the increase of lead mass concentration. The contents of putrescine were apparently higher than the control, then decreased with the increase ...