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| Variance Analysis of Cadmium Accumulation Potential of Typical Varieties of Chinese Cabbage in Beijing-Tianjin-Hebei Region |
| LIU Can1，ZHANG Yihang1，CUI Shihao1，LI Longcheng1，WANG Yan2，FAN Beibei1，CHEN Qing1* |
| 1Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation，College of Resources and Environmental Sciences，China Agricultural University，Beijing 100193，China；2Chifeng Academy of Agricultural and Animal Husbandry Sciences，Chifeng 024000，Inner Mongolia，China |
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Abstract In this study，15 typical varieties of Chinese cabbage were selected to compare the difference in cadmium（Cd）accumulation capacity in Beijing-Tianjin-Hebei region with pot cultural experiment．The results showed that there were significant differences in dry weight and Cd accumulation of shoot part among different Chinese cabbage cultivars，and the related bio-concentration factors fluctuated in the range of 0.003-0.117．In particular，although Cd concentrations with fresh weight basis in all 15 cabbage varieties were lower than the threshold 0.20 mg · kg-1 stipulated in GB 2762—2017 National Food Safety Standard-Limit of Pollutants in Food，the results of the cluster analysis showed that the varieties，including that‘Jingcui 60’‘Jingxia No.56’ ‘15-13 Baicai’ ‘Xiaoza No.60’ were high Cd accumulation varieties，and the concentration of Cd content in shoot parts ranged from 0.115 to 0.169 mg · kg-1，which had higher safety risk when compared with varieties in medium-low accumulation group（0.004-0.092 mg · kg-1）．The Cd accumulation ability of‘14CR-2 Baicai’in soil was significantly lower than that of the other varieties，which was suitable for large-scale planting extension．
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Received: 17 July 2022
Published: 15 November 2022
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