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Citation:

Selection for Cd-hyperaccumulator Plant from 25 Lianas Species

  • Received Date: 2015-12-22
  • [Objective] To select the cadmium (Cd) -hyperaccumulator plant for remediating the soil polluted by Cd. [Method] 25 lianas species were sampled in Hunan Province, China. The method of indoor hydroponics and outdoor pot experiment were designed. The Cd content from root, stem and leaf were analyzed by quantitative analyzing. [Result] The results showed that Vinca major had stronger tolerance to Cd, and both the enrichment coefficient and transfer coefficient were higher than 1 and provided with the basic characteristics of Cd-hyperaccumulator plant in water cultivation. In pot experiment, the aboveground biomass was not significant reduced and the Cd content was higher than underground when the concentration of Cd in soil was 25, 50 mg·kg-1, respectively, meanwhile, the cumulant ability reached to the standard of 100 mg kg-1 in leaf. [Conclusion] V. major is a species for Cd hyperaccumulator, deeply further test should be carried out.
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Selection for Cd-hyperaccumulator Plant from 25 Lianas Species

  • 1. Hunan Agricultural University, Changsha 410127, Hunan, China
  • 2. Hunan Biological and Electromagnetic Polytechnic, Changsha 410127, Hunan, China
  • 3. Central South University of Forestry and Technology, Changsha 410004, Hunan, China
  • 4. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, Zhejiang, China

Abstract: [Objective] To select the cadmium (Cd) -hyperaccumulator plant for remediating the soil polluted by Cd. [Method] 25 lianas species were sampled in Hunan Province, China. The method of indoor hydroponics and outdoor pot experiment were designed. The Cd content from root, stem and leaf were analyzed by quantitative analyzing. [Result] The results showed that Vinca major had stronger tolerance to Cd, and both the enrichment coefficient and transfer coefficient were higher than 1 and provided with the basic characteristics of Cd-hyperaccumulator plant in water cultivation. In pot experiment, the aboveground biomass was not significant reduced and the Cd content was higher than underground when the concentration of Cd in soil was 25, 50 mg·kg-1, respectively, meanwhile, the cumulant ability reached to the standard of 100 mg kg-1 in leaf. [Conclusion] V. major is a species for Cd hyperaccumulator, deeply further test should be carried out.

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