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| Genotypic Differences in Cd Accumulation and Translocation in Artemisia selengensis |
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| KeyWord:Artemisia selengensis; cadmium; accumulation; translation; genotypic differences |
| Author Name | Affiliation | | LI Xia | College of Forest Resources and Environment, Nanjing Forestry University Key Laboratory of Forestry Ecology and Engineering in Jiangsu Province, Nanjing 210037, China | | ZHANG Yin-long | College of Forest Resources and Environment, Nanjing Forestry University Key Laboratory of Forestry Ecology and Engineering in Jiangsu Province, Nanjing 210037, China | | WEI You-gang | Nanjing Institution of Vegetable Science, Nanjing 210042, China | | XU Ming-xi | Nanjing Institution of Vegetable Science, Nanjing 210042, China | | DI Guang-juan | College of Forest Resources and Environment, Nanjing Forestry University Key Laboratory of Forestry Ecology and Engineering in Jiangsu Province, Nanjing 210037, China | | BU Dan-rong | College of Forest Resources and Environment, Nanjing Forestry University Key Laboratory of Forestry Ecology and Engineering in Jiangsu Province, Nanjing 210037, China |
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| Abstract: |
| Heavy metals may pose health risks through food chain. The accumulation of heavy metals by vegetable plants has genotypic differences. A pot-culture experiment was carried out to study genotypic differences in Cd accumulation and translocation in Artemisia selengensis, a health-benefiting vegetable, At the same Cd level, the variation of dry weight of 4 Artemisia selengensis was significant（P<0.05）. The dry weight of 4 Artemisia selengensis followed a rise-fall pattern with Cd concentrations, with the greatest dry weight at 100 mg Cd·kg-1. Similarly, the activity of antioxidant enzyme in the leaves of 4 Artemisia selengensis increased at first and then decreased with increasing Cd. The decline in the antioxidant enzyme activity was greater in Fuqiu Artemisia selengensis and Bai Artemisia selengensis than in Dayeqing Artemisia selengensis and Qingbai Artemisia selengensis. Significant differences（P<0.05） were observed in Cd concentrations in edible part（stem）, bioaccumulation factors（BFs） and translocation factors（TFs） among 4 Artemisia selengensis. The BFs were greater than 1.0 for all 4 Artemisia selengensis. The Cd concentrations in Artemisia selengensis stems grown in soils with >0.5 mg Cd·kg-1 exceeded the Safety Standards for non-pollution vegetables, indicating that the soils was not suitable for growing Artemisia selengensis. Fuqiu Artemisia selengensis should be choosed for soils containing Cd slightly higher than the natural background value. |
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