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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (17): 145-150.doi: 10.11924/j.issn.1000-6850.casb15030175

所属专题： 土壤重金属污染

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

苎麻对重金属Cd污染的耐受和富集能力研究

林欣,张兴,朱守晶,揭雨成   

  1. 湖南农业大学苎麻研究所,湖南农业大学苎麻研究所,湖南农业大学苎麻研究所,湖南省长沙市芙蓉区湖南农业大学苎麻研究所
  • 收稿日期:2015-03-22 修回日期:2015-05-26 接受日期:2015-04-29 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 揭雨成
  • 基金资助:
    国家自然科学基金委面上项目“矿区野生苎麻镉富集特征和耐性及分子标识与相关基因的克隆”(31371704)；湖南省科技厅重点项目“苎麻抗逆基因的挖掘与应用”、“苎麻抗逆基因的挖掘与利用”、“苎麻抗逆基因的挖掘与应用2012”(2010TP4004-1、2010FJ2013、2012FJ4063)；国家科技支撑计划“环洞庭区避灾种植模式研究与集成示范”(2012BAD20B05-04)；湖南省研究生科研创新项目“苎麻耐重金属镉关键基因的克隆与功能研究”(CX2011B279)。

Tolerance and Accumulation Ability of Ramie to Heavy Metal Cadmium Pollution

林欣,张兴, and   

  • Received:2015-03-22 Revised:2015-05-26 Accepted:2015-04-29 Online:2015-07-27 Published:2015-07-27

PDF (PC)

371

摘要： 为了探究野生型和栽培型苎麻对Cd耐受和富集积累方面的差异，在前人研究的基础上，以野生型和栽培型苎麻为研究对象，采取盆栽试验，以富顺青麻‘、湘苎3号’、冷水江野麻以及浏阳野麻4个品种作为试验材料，对苎麻的耐Cd能力以及Cd富集积累特性进行研究，以期为苎麻耐Cd种质筛选奠定基础。结果表明：各器官对Cd的富集系数顺序与Cd含量相同，在2种高浓度处理下，地上部富集系数均小于1，且随浓度升高而降低；富顺青麻、冷水江野麻和‘湘苎3号’对Cd的转运系数均大于1，表明苎麻植株向上运输Cd的能力较强，说明苎麻除了对Cd有一定的耐性，还具备一定的富集能力，作为经济作物有修复重金属污染的潜力。

关键词: 番茄, 番茄, 环境因子, 生长发育

Abstract: In order to study the difference in accumulation and tolerance ability of Cd in wild and cultivated ramie, based on previous studies, the author used wild and cultivated ramie as the research objects, and conducted pot experiment with Fushun ramie,‘Xiangzhu III’ , Lengshuijiang wild ramie and Liuyang wild ramie. The author studied the accumulation and tolerance characteristics of the tested materials in order to lay the foundation for ramie Cd resistant germplasm screening. The results showed that the Cd accumulation coefficient sequence of different organs and Cd contents were the same, under 2 kinds of high concentration treatments, the accumulation coefficients of the aboveground part were less than 1, and decreased with the increase of concentration; the Cd transport coefficients of Fushun ramie, Lengshuijiang wild ramie and ‘Xiangzhu III’were greater than 1, which indicated that they had better ability to transport Cd up. This indicated that ramie had tolerance to Cd and it also had accumulation capacity. As one kind of economic crops, the ramie had the potential to repair the heavy metal pollution.