Screening of Salix caprea isolates for their capacity to accumulate Zn and Cd in leaves
Salix caprea has been found to accumulate substantial amounts of Zn and Cd in its leaf biomass. 13-22 specimens derived from seven sites in Central Europe (four contaminated, three uncontaminated) were tested in a hydroponic experiment for their leaf biomass production and Zn and Cd accumulation capacity to determine (i) differences between specific populations and (ii) individual isolates. Green cuttings were propagated in greenhouse conditions. Cuttings of similar growth were transplanted into a perlite culture and pregrown for two months with a nutrient solution. Subsequently, the plants were exposed to a solution containing elevated concentrations of Zn and Cd for further two months. Leaf biomass and the foliar concentrations of Zn and Cd were recorded after harvest. For Zn in leaves no difference was found between populations from uncontaminated and contaminated sites. The populations from contaminated sites accumulated more Cd, but produced less leaf biomass. Large differences were found between the individual specimens of each population. The results of this study are considered as basis for the selection of specimen with high Zn and Cd phytoextraction capacity.
Phytoextraction Salix caprea Zinc Cadmium populations
M. Puschenreiter P. Sommer G. Wieshammer M. T. Hauser M. T rktas J. Strauss W. W. Wenzel
Department of Forest and Soil Sciences, University of Natural Resources and Applied Life Sciences, P Department of Plant Sciences and Applied Plant Biotechnology, University of Natural Resources and Ap
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
231-232
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）