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《Journal of Henan Agricultural Sciences》 2009-06
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Absorption Characteristics of Bidens maximowicziana Oett. to Cadmium and Lead

WANG Su-juan,LI Zheng-wen*,WANG Yan-xiang(College of Agriculture,Guangxi University,Nanning 530004,China)  
Using the method of the potted cultivation,the characteristics of plants of the Bidens maximovicziana Oett.with high tolerance to Cd or Pb were further investigated.Bidens maximowicziana Oett.had a stronger absorption to Pb than to Cd.The concentration of lead in plants increased linearly with the increase of lead concentration in soil.When single contamination with Pb concentration in soil being 800mg/kg,the maximum Pb concentration could be up to 928.88mg/kg in the overground parts,while Pb concentration in soil was 800mg/kg complexed with Cd 5mg/kg,747.58mg/kg in the roots.When Cd was 20mg/kg with Pb 400mg/kg in contamination soil,the plants absorbed Cd most strongly,the value could be up to 57.20mg/kg in roots and 21.33mg/kg in the overground parts.The Pb concentration distributed in the overground parts was more than that in the roots,while for Cd,adversely.Cd and Pb had no effects on biomass of Bidens maximowicziana Oett..The Cd restrained the absorption of the Pb,while the Pb accelerated the absorption of the Cd.
【Fund】: 广西研究生教育创新计划资助项目(2007105930710M83)
【CateGory Index】: X53
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