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
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．
