Uptake and Accumulation of Cadmium and Zinc by Two Energy Grasses: A Field Experiment

The remediation potential of large biomass energy grasses in cadmium-contaminated soil remains ambiguous. A field experiment was carried out in a cadmium-contaminated farmland using two energy grasses and two control plants. The two energy grasses were hybrid pennisetum ( × , PAP) and purple elephan...

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Published inHuanjing kexue Vol. 42; no. 3; p. 1158
Main Authors Zheng, Rui-Lun, Shi, Dong, Liu, Wen-Ju, Sun, Guo-Xin, Hou, Xin-Cun, Hu, Yan-Xia, Zhu, Yi, Wu, Ju-Ying
Format Journal Article
LanguageChinese
Published China 08.03.2021
Subjects
Biodegradation, Environmental
Cadmium - analysis
Plant Roots - chemistry
Soil
Soil Pollutants - analysis
Zinc - analysis
elephant grass
hybrid penisetum
cadmium
Iris lactea
Noccaea caerulescens
zinc
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Summary:The remediation potential of large biomass energy grasses in cadmium-contaminated soil remains ambiguous. A field experiment was carried out in a cadmium-contaminated farmland using two energy grasses and two control plants. The two energy grasses were hybrid pennisetum ( × , PAP) and purple elephant grass ( 'Purple', PPP), and the two control plants were var. (ILC) and a cadmium hyperaccumulator, (NC). The results showed that the aboveground biomass of PAP was the largest among the four plants, and 126 and 36 times that of NC and ILC, respectively, but no significant difference with that of PPP. The concentrations of cadmium and zinc in the shoots and roots of NC were significantly higher than in the other plants. Zinc concentrations in the shoots and roots of ILC were lower than in the other plants, while cadmium concentrations were significantly higher than in PAP and PPP ( <0.05). The amounts of cadmium and zinc accumulated in the shoots of PPP were the highest among the four plants, while cadmium concent
ISSN:0250-3301
DOI:10.13227/j.hjkx.202008291