文献类型：期刊文献

中文题名：锌镉胁迫下4种农田杂草生理生化特性及对重金属的累积特征

英文题名：Physiological and Biochemical Characteristics of 4 Farmland Weeds Under Zn and Cd Stress and Accumulation Characteristics of Heavy Metals

作者：毛雪飞[1];杨洁[1]

第一作者：毛雪飞

机构：[1]新乡学院生命科学技术学院

第一机构：新乡学院生命科学技术学院

年份：2019

卷号：39

期号：6

起止页码：9-18

中文期刊名：西南林业大学学报：自然科学

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：江苏省科技攻关项目(162102110028)资助

语种：中文

中文关键词：农田杂草;重金属;富集能力;生理抗性

外文关键词：farmland weeds;heavy metals;accumulation ability;physiological resistance

摘要：以4种农田杂草为试验材料,采用水培试验,分析不同浓度锌、镉单一胁迫条件下,4种农田杂草的生理生化性质和重金属富集情况,并采用隶属函数法进行植物抗污能力综合评价。结果表明:锌、镉单一胁迫下,随着锌、镉处理浓度的升高,4种农田杂草的游离脯氨酸和丙二醛含量总体呈现递增趋势;叶绿素、可溶性糖、可溶性蛋白和过氧化物酶活性均呈现先升后降趋势。锌、镉单一胁迫下,随着处理浓度的升高,4种农田杂草体内地上部分和根系的锌、镉累积量均相应增加。同一处理水平下,4种农田杂草锌、镉累积量均表现为麦瓶草>刺儿菜>麦家公>播娘蒿。隶属函数评价表明,锌胁迫下4种农田杂草抗污能力由强到弱排序的顺序为麦家公>麦瓶草>刺儿菜>播娘蒿,镉胁迫下4种农田杂草抗污能力表现为麦家公>刺儿菜>麦瓶草>播娘蒿。总体来说,4种农田杂草植物均对重金属胁迫具有一定的耐性与抗性,同时麦家公对重金属锌、镉的抗污能力最强,播娘蒿抗污能力最弱。
Four kinds of farmland weeds were used as test materials,and hydroponic experiments were carried out to analyze the physiological and biochemical properties and heavy metal enrichment of 4 kinds of farmland weeds under different stress conditions of zinc and cadmium.The subordinate function method was adopted to improve the plant resistance to carrying capacity comprehensive evaluation.The results showed as follow under the single stress of Zn and Cd,with the increasing of the concentration of Zn and Cd,the contents of free proline and malondialdehyde of the 4 plants increased,while the activities of chlorophyll,soluble sugar,soluble protein and peroxidase increased first and then decreased.Under the single stress of Zn and Cd,the accumulation of Zn and Cd in the aboveground parts and roots of 4 kinds of farmland weeds increased with the increasing of the concentration of Zn and Cd.At the same treatment level,the accumulations of Zn and Cd of 4 plants were Silence conoidea>Cirsium setosum>Buglossoides arvensis>Descurainia sophia.The evaluation of subordinate func-tion showed that the order of the pollution resistance of 4 plants under Zn stress from strong to weak was B.arvensis>S.conoidea>C.setosum>D.sophia.Under the Cd stress,the pollution resistance of 4 plants was as follows:B.arvensis>C.setosum>S.conoidea>D.sophia.On the whole,all 4 kinds of farmland weeds have certain tolerance and resistance to heavy metal stress,while B.arvensis has the strongest anti-pollution ability to Zn and Cd,and D.sophia has the weakest.