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Chenopodium: a prospective plant for phytoextraction

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Leaf samples were collected from 40 accessions of Chenopodium spp. and assessed for six heavy metals (Fe, Zn, Cu, Ni, Cr and Cd) accumulation to explore the use of Chenopodium for phytoextraction of heavy metals. The results suggest that Chenopodium spp. have the ability to accumulate large quantities of heavy metals in the leaf tissues even when they are present in low concentrations in the soil. C. quinoa is a better accumulator of Ni, Cr and Cd than the rest of the species, while C. album accessions are good copper accumulators. Bioconcentration factor for chromium ranged from 0.36 (C. album ‘‘Chandanbathua’’) to 6.57 (C. quinoa Ames 13719) with 13 accessions of C. quinoa scoring above the mean value. High heritability coupled with high genetic advance was recorded for Ni, Cr and Cd, which indicated a major role of additive gene action in the inheritance of these characters. Zinc showed significant positive association with iron (0.351**), nickel (0.659**), chromium (0.743**) and cadmium (0.288**). Nickel was significantly and negatively associated with copper (0.663**), while it was positively and significantly correlated with chromium (0.682**) and cadmium (0.461**). Considering the accumulation efficiency of Chenopodium spp. with respect to heavy metals, this genus should be further explored for decontamination of metal polluted soils, with plant breeding playing an important role in evolving new plant types with higher capacity of heavy metal accumulation.
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  • Amity Institute of Biotechnology, Amity University Lucknow Campus, Gomti Nagar, 226010 Lucknow, India
  • Division of Genetics and Plant Breeding, National Botanical Research Institute, Rana Pratap Marg, 226001 Lucknow, India
  • Biomass Biology Division, National Botanical Research Institute, Rana Pratap Marg, 226001 Lucknow, India
  • Biomass Biology Division, National Botanical Research Institute, Rana Pratap Marg, 226001 Lucknow, India
  • Division of Genetics and Plant Breeding, National Botanical Research Institute, Rana Pratap Marg, 226001 Lucknow, India
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