生态学杂志2012，Vol.31Issue(3)：532-537,6.
钒、汞胁迫对菜心幼苗生理生化特性的影响
Effects of V and Hg stress on the physiological and biochemical characteristics of Brassica chinensis L.seedlings
摘要
Abstract
A water culture experiment was conducted to study the effects of single and combined stresses of V and Hg on the physiological and biochemical characteristics of Brassica chinensis seedlings. With the increasing V and Hg stresses, the malondialdehyde content and the cell membrane permeability of the seedlings had an obvious increase, and the increment was 8. 4% -271.5% and 22.4%-145.6% , respectively, as compared with the control. The chlorophyll content and the catalase, peroxidase, and superoxide dismutase activities all increased first and decreased then. At lower concentrations V and Hg, the three protective enzymes showed syner-gistic effect, suggesting the stronger self-adjustable capability of B. Chinensis seedlings; while at higher concentrations V and Hg, the activities of the three enzymes and the chlorophyll content declined, revealing that under environmental stress, plant physiological characteristics changed, and the activities of plant protective enzymes were inhibited. Combined stress of V and Hg had stronger toxic effect than the single stress of V and Hg when applied at the same levels.关键词
V/Hg/复合胁迫/生理特性/菜心幼苗Key words
V/ Hg/ combined stress/ physiological characteristics/ Brassica chinensis seedling分类
农业科技引用本文复制引用
侯明,路畅,张兴龙..钒、汞胁迫对菜心幼苗生理生化特性的影响[J].生态学杂志,2012,31(3):532-537,6.基金项目
国家自然科学基金项目(41161076)、广西自然科学基金项目(2011GXNSFA018045)和广西环境工程与保护评价重点实验室研究基金项目(桂科能0701k013)资助. （41161076）
