2021年12月6日 星期一
Hg2+对金银莲花根和叶片的伤害
Injury of Hg2+ on roots and leaves of Nymphoides indica ( L. ) Kuntze
1999年 第8卷 第1期 页码[56-58]    下载全文[0.4MB]  
摘要

研究了汞离子胁迫下金银莲花Nymphoides indica ( L .) Kuntze]根受害情况根部过氧化物酶活性和新叶叶绿素含量的变化。根部受害程度随汞离子浓度升高和处理时间的延长而加重。低浓度 Hg2 +短时间处理后根过氧化物酶活性升高, 而高浓度 Hg2 +长时间处理后根过氧化物酶活性下降, 且随着Hg2 +浓度的升高或处理时间的延长过氧化物酶活性均呈下降趋势新叶叶绿素含量对 Hg2 +胁迫的反应与根过氧化物酶活性的变化相似

Abstract

The injury degree of roots, the activity of peroxidase in roots and chlorophyll content in new leaves of Nymphoides indica by the stress of Hg2 + are reported .Injury degree of roots were intensitied with the increase of Hg2 + concentrationor as treatment time is continued .The activity of perox idase increased under the treatement with low concentration of Hg2 + in a short time, but decreased as treatment time is continued. The stress of Hg2 +had the similiar effects on chlorophyll content in new leaves .

关键词金银莲花; 过氧化物酶; 叶绿素;
Key wordsNymphoides indica ( L. ) Kuntze; peroxidase; chlorophyll
作者尤文鹏, 施国新, 常福辰, 杨顶田, 解凯彬
所在单位南京师范大学生物系, 南京 210097
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基金项目国家自然科学基金和江苏省自然科学基金共同资助项目