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| Cadmium accumulation and translocation in different jute(Corchorus capsularis L.)cultivars growing in heavy metal contaminated paddy soil |
| Received:May 29, 2019 |
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| KeyWord:jute (Corchorus capsularis L.);Cd;accumulation characteristics;phytoremediation |
| Author Name | Affiliation | E-mail | | GUO Yuan | Institute of Bast Fiber Crops/Center for Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China | | | QIU Cai-sheng | Institute of Bast Fiber Crops/Center for Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China | | | LONG Song-hua | Institute of Bast Fiber Crops/Center for Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China | | | WANG Yu-fu | Institute of Bast Fiber Crops/Center for Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China | chinaflax@126.com |
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| Abstract: |
| To investigate the Cd phytoextraction capacity of jute (Corchorus capsularis L.) planted in heavy metal contaminated paddy soil, a field experiment was conducted in a medium cadmium-contaminated paddy field in Zhuzhou County, Hunan Province, China. Biomass and Cd concentration of six plant organs in three jute cultivars were investigated and total Cd uptake was evaluated. The results showed most biomass was stored in the xylem and phloem.Cd concentration was significantly different among cultivars and among organs. Cd accumulated more in ‘Lianhonghuangma’ than in the other two jute cultivars. Capsule (4.75 mg·kg-1) and petiole (4.27 mg·kg-1) showed significantly higher Cd concentrations than the other four organs, which followed in the order of leaf > root > xylem > phloem. Transportation factor of the aerial part exceeded one in all the three cultivars. The ability of Cd transportation from the xylem/phloem to the capsule/petiole was higher than that from the root to the xylem/phloem and from the petiole to the leaf. Total Cd accumulation in ‘Lianhonghuangma’ was 53.3 g·hm-2, higher than that in ‘Minhouhongpi’ and ‘Huangma 179’. Xylem was the main Cd accumulation organ which extracted 33.11%~42.99% of the total Cd absorbed by the plant. Our research indicated jute could be used as an accumulator for phytoremediation of Cd-contaminated soil in southern China. |
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