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Peanut as a potential crop for bioenergy production via Cd-phytoextraction: A life-cycle pot experiment

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Abstract

Aims

The current study aimed to assess the potential of peanut (Arachis hypogaea L.) for bioenergy production via phytoextraction in cadmium (Cd) -contaminated soils and screen appropriate cultivars for this approach.

Methods

A life-cycle pot experiment was conducted to determine the biomass, seed yield, oil content and Cd accumulation of seven peanut cultivars under Cd concentration gradients of 0, 2, and 4 mg kg−1.

Results

Peanut exhibits genotypic variations in Cd tolerance, seed production, oil content, and Cd accumulation. Exposure of plants to 2 and 4 mg kg−1 Cd did not inhibit shoot biomass, seed yield, and oil content for most of the cultivars tested. There are large amounts of Cd accumulated in the shoots. Although the seed Cd concentration of peanut was relatively high, the Cd concentration in seed oils was very low (0.04-0.08 mg kg−1). Among the cultivars, Qishan 208 showed significant Cd tolerance, high shoot biomass, high pod and seed yield, high seed oil content, considerable shoot Cd concentration, and the largest translocation factor and total Cd in shoots.

Conclusions

The cultivation of peanut in Cd-contaminated farmland was confirmed to be feasible for bioenergy production via phytoextraction, and Qishan 208 is a good candidate for this approach.

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Acknowledgments

The National Natural Science Foundation of China (No. 31171464) and the Anhui Provincial Natural Science Foundation (No. 11040606 M87) are gratefully acknowledged for their financial support. We would like to acknowledge the two anonymous reviewers for their helpful comments and suggestions.

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Authors and Affiliations

  1. College of Life Sciences, Huaibei Normal University, Huaibei, 235000, People’s Republic of China

    Genqiang Su, Fen Li, Jingshuang Lin, Caifeng Liu & Gangrong Shi

Authors
  1. Genqiang Su
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  2. Fen Li
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  3. Jingshuang Lin
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  4. Caifeng Liu
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  5. Gangrong Shi
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Corresponding author

Correspondence to Gangrong Shi.

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Responsible Editor: Henk Schat.

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Su, G., Li, F., Lin, J. et al. Peanut as a potential crop for bioenergy production via Cd-phytoextraction: A life-cycle pot experiment. Plant Soil 365, 337–345 (2013). https://doi.org/10.1007/s11104-012-1394-1

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  • DOI: https://doi.org/10.1007/s11104-012-1394-1

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