| 秦冉,龚思同,娄飞,马智黠,何守阳,何腾兵,付天岭.基于多目标重金属元素筛选低累积芸豆品种[J].农业环境科学学报,2021,40(12):2704-2714. |
| 基于多目标重金属元素筛选低累积芸豆品种 |
| Screening of kidney bean varieties with low heavy metal-accumulation ability based on multi-objective heavy metal elements |
| 投稿时间：2021-02-22 |
| DOI：10.11654/jaes.2021-0209 |
| 中文关键词: 芸豆 重金属 富集系数 低累积品种 黔西北 |
| 英文关键词: kidney bean heavy metal enrichment factor low-accumulation variety northwest Guizhou |
| 基金项目:贵州省科技厅科技基础条件平台项目（黔科合平台人才[2019]5701号）；国家自然科学基金委-贵州省人民政府喀斯特中心项目（U1612442） |
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| 中文摘要: |
| 为筛选基于多目标重金属元素芸豆品种，保障芸豆生产输出潜力，以黔西北主栽的10个芸豆品种为研究对象，通过污染区田间微区试验，研究不同芸豆品种中Cd、Hg、As、Pb、Cr、Cu、Zn、Ni等典型有害重金属元素的污染特征和富集系数。结果显示：10个芸豆品种对8种典型有害重金属的吸收累积能力整体呈现Zn>Cu>Cd>Ni>Hg>Cr>As>Pb的特征；芸豆对Zn、Cu元素的富集能力较强（富集系数0.2左右），对Cd的富集能力较弱（富集系数0.02~0.05），对Pb、As、Cr、Ni、Hg富集能力非常弱（富集系数不足0.01）。芸豆品种间对同一典型有害重金属元素的累积存在显著差异，按照芸豆中重金属含量进行聚类分析，可以把芸豆品种划分为较高值类、中间值类、较低值类3个类别，富集系数也可以相应地明显区分开来。其中，黑红芸豆、威芸一号、大红芸豆和红芸豆可作为Cd的低累积推荐品种；红芸豆、朱砂豆、圆花豆可作为Hg的低累积推荐品种；本地芸豆、黑芸豆、圆花豆、威芸一号和朱砂豆可作为As的低累积推荐品种；黑芸豆、奶花豆、本地芸豆和朱砂豆可作为Pb的低累积推荐品种；威芸一号和圆花豆可作为Cr的低累积推荐品种；朱砂豆可作为Cu的低累积推荐品种；黑芸豆、本地芸豆、大红芸豆、威芸一号、红芸豆和朱砂豆可作为Zn的低累积推荐品种；大红芸豆、威芸一号、黑红芸豆、红芸豆可作为Ni的低累积推荐品种。研究表明，10个芸豆品种均可以作为黔西北Cd污染区的推荐品种，但其体内重金属Cu、Zn超标风险须引起特别关注。 |
| 英文摘要: |
| A plot experiment was performed in a polluted area to screen kidney bean varieties based on multi-objective heavy metal elements, and to ensure the production potential of kidney beans. In this paper, ten kidney bean varieties planted in northwest Guizhou were tested, and the pollution characteristics and enrichment factors of Cd, Hg, As, Pb, Cr, Cu, Zn, Ni were analyzed. The results showed that the kidney bean had a high enrichment capacity for Zn and Cu(enrichment factor was about 0.2), low enrichment capacity to Cd (enrichment factor was 0.02~0.05), and the lowest enrichment capacity for Pb, As, Cr, Ni, and Hg(enrichment factor was<0.01), presenting the characteristics of Zn>Cu>Cd>Ni>Hg>Cr>As>Pb. According to the cluster analysis of heavy metal content in kidney bean, kidney bean varieties could be divided into three categories by cluster analysis:high value category, middle value category and low value category, as could the bioaccumulation coefficients(BCFs). Among these, Black red kidney bean, Weiyun No.1, Big red kidney bean, and Red kidney bean could be used as low Cd-accumulation varieties; Red kidney bean, Cinnabar bean, and Round flower bean could be recommended as low Hg-accumulation varieties; Local kidney bean, Black kidney bean, Round flower bean, Weiyun No. 1, and Cinnabar bean could be recommended as low As-accumulation varieties; Black kidney bean, Milk flower bean, Local kidney bean and Cinnabar bean could be recommended as low Pb-accumulation varieties; Weiyun No. 1 and Round flower bean could be recommended as low Craccumulation varieties; Cinnabar bean could be recommended as a low Cu-accumulation variety; Black kidney bean, Local kidney bean, Dahong kidney bean, Weiyun No.1, Red kidney bean and Cinnabar bean could be recommended as low accumulation varieties of Zn; and Dahong kidney bean, Weiyun No.1, Black red kidney bean, and Red kidney bean could be recommended as low Ni-accumulation varieties. These results show that all the ten kidney bean varieties can be recommended for the remediation of Cd-contaminated areas in northwest Guizhou, but the risk of Cu and Zn exceeding the standard levels should be monitored closely. |
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