扬州大学学报（农业与生命科学版）2017，Vol.38Issue(1)：115-119,5.DOI:10.16872/j.cnki.1671-4652.2017.01.022
硒对镉胁迫下豆瓣菜生长、生理特性及镉积累的影响
Effects of Se on the growth and Cd accumulation of Nasturtium officinale under Cd stress
摘要
Abstract
A hydroponic experiment was carried out to study the effects of Se on the growth and Cd accumulation of watercress under Cd stress.The results showed that Se resulted in the reduction of MDA content and Cd accumulation of watercress,and had positive effects on yield,root activity,chlorophyll content,net photosynthetic rate and antioxidant enzyme activity.Se concentration in different parts of watercress increased with the increasing Se content in nutrient solu tion.When Se concentration was 3.00 and 5.00 mg · L-1,the Cd concentration in edible parts of watercress was 0.188 and 0.176 mg · kg-1 respectively,which was under the limit value of national standards.But Se concentration in edible parts of watercress exceeded the limit value,when Se treatment level was 5.00 mg · L-1.In conclusion,Se has positive effects on the growth of watercress under Cd stress.When watercress was slightly polluted by Cd,3.00 mg · L-1 Se can reduce the accumulation of Cd,ensuring the edible safety of Se-enriched watercress.关键词
硒/豆瓣菜/生理特性/镉积累Key words
Selenium/watercress/physiological responses/Cd accumulation分类
农业科技引用本文复制引用
韩承华,石如琼,潘瑞瑞,刘野,严吴炜,朱丽丽,张路,李换平,江解增,周增辉,张娜,田秋芳..硒对镉胁迫下豆瓣菜生长、生理特性及镉积累的影响[J].扬州大学学报（农业与生命科学版）,2017,38(1):115-119,5.基金项目
“十二五”农村领域国家科技计划项目(2012BAD27B02) （2012BAD27B02）
江苏省农业三新工程项目[SXGC(2013)338] （2013）
