Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 173, Issue 1-3, Pages 737-743Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2009.08.147
Keywords
Chinese cabbage (Brassica pekinensis L.); Cadmium pollution; Cultivar variation; Cd-safe cultivars (CSCs)
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Funding
- Ministry of Science and Technology, People's Republic of China [2006AA06Z386, 707011]
- National Natural Science Foundation of China [20777040]
- Sino-Russion Joint Research Center on Natural Resources and Eco-Environmental Sciences
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Variations in cadmium accumulation and translocation among 40 Chinese cabbage cultivars were studied to identify and screen out Cd-safe cultivars (CSCs), i.e. cultivars with low enough accumulation of Cd in their edible parts even when grown in contaminated soils. It was observed in the pot-culture experiment that there was a significant difference (p<0.05) in shoot Cd concentrations under three Cd treatments (1.0, 2.5 and 5.0 mg/kg), with corresponding average values 0.88, 4.45 and 7.76 mg/kg, respectively. Shoot Cd concentrations in 16 cabbage cultivars were lower than 0.50 mg/kg. The translocation factors(TFs)and the extraction factors (EFs) in five cabbage cultivars were lower than 1.0 in the pot-culture experiment. The field-culture experiment further validated that New Beijing 3 and Fengyuanxin 3 could be considered as CSCs. In particular, the two cultivars can be cultivated in low to moderate Cd-contaminated soils (Cd concentration <1.25 mg/kg) to minimize the Cd accumulation in the food. (C) 2009 Elsevier B.V. All rights reserved.
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