不同燕麦品种籽粒镉富集特征及安全风险评价

马凤仪; 赵宝平; 张茹; 杨波; 王永宁; 郭晓宇; 陈淼; 刘景辉

文章摘要

马凤仪,赵宝平,张茹,杨波,王永宁,郭晓宇,陈淼,刘景辉.不同燕麦品种籽粒镉富集特征及安全风险评价[J].农业环境科学学报,2022,41(11):2458-2467.

不同燕麦品种籽粒镉富集特征及安全风险评价

Grain cadmium enrichment characteristics and safety risk assessment of different oat varieties

投稿时间：2022-02-25

DOI：10.11654/jaes.2022-0180

中文关键词: 燕麦镉富集系数转运系数安全风险评价

英文关键词: oat cadmium enrichment coefficient transport coefficient safety risk assessment

基金项目:财政部和农业农村部：国家现代农业产业技术体系；农业农村部耕地重金属污染防治联合公关项目

作者	单位	E-mail
马凤仪	内蒙古农业大学农学院, 呼和浩特 010010
赵宝平	内蒙古农业大学农学院, 呼和浩特 010010	zhaobaoping82@163.com
张茹	内蒙古农业大学农学院, 呼和浩特 010010
杨波	巴彦淖尔市耕地质量监测保护中心, 内蒙古巴彦淖尔 015000
王永宁	内蒙古农牧业生态与资源保护中心, 呼和浩特 010000
郭晓宇	内蒙古农牧业生态与资源保护中心, 呼和浩特 010000
陈淼	乌拉特后旗农村牧区生态能源环保站, 内蒙古巴彦淖尔 015500
刘景辉	内蒙古农业大学农学院, 呼和浩特 010010

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中文摘要:

为揭示影响燕麦籽粒镉（Cd）含量的关键因素，以18个燕麦品种为研究对象，分别于2020年和2021年开展连续2期大田试验，研究燕麦不同器官间Cd富集转运对籽粒Cd含量的影响，并通过聚类分析、THQ值进行低Cd积累品种筛选和安全风险评价；通过相关性分析和主成分分析评估影响籽粒Cd含量的关键器官和关键过程。结果表明：坝燕7号、201229-1-1、200919-7-1、坝莜14号、坝燕6号、白燕9号等13个品种为籽粒Cd低积累型品种，坝燕4号、燕科2号、蒙燕2号、白燕17号为籽粒Cd高积累型品种，分别占供试品种的72.22%和22.22%；燕麦籽粒Cd含量与茎中Cd富集系数及Cd从根到籽粒、茎到籽粒、叶到籽粒的转运系数呈极显著正相关；在主成分分析中，茎中Cd的富集系数及Cd从根到籽粒、茎到籽粒、叶到籽粒的转运系数对区分高、低Cd积累燕麦品种贡献较大。因此，茎是影响燕麦籽粒Cd含量差异的关键器官，Cd从根到籽粒、茎到籽粒、叶到籽粒的转运过程是造成燕麦籽粒Cd含量差异的关键转运过程。

英文摘要:

To reveal the key influencing factors affecting the Cd content of oat grains, 18 oat varieties were taken as research objects, and two consecutive field trials were carried out in 2020 and 2021 to study the effect of Cd enrichment and transport between different organs of oat on grain Cd content. Cluster analysis was applied to determine the THQ value to screen low Cd accumulation varieties, and a safety risk assessment was conducted through correlation analysis and principal components to analyze the key organs and key processes affecting grain Cd enrichment. The results showed that 13 cultivars, including Bayan No.7, 201229-1-1, 2009-7-1, Bayou No.14, Bayan No.6, and Baiyan No.9, had low-accumulation varieties of Cd in grains, and Bayan No.4, Yanke No.2, Mengyan No.2, and Baiyan No.17 had a high accumulation. The concentration factor and Cd transport coefficient from root to grain, stem to grain, and leaf to grain were significantly positively correlated, and the transport coefficient to the grain contributed significantly to the differentiation between high and low Cd accumulation oat cultivars. Therefore, the stem is the key organ that affects the difference in Cd content in oat grains, and the transport of Cd from root to grain, stem to grain, and leaf to grain is the key transport process that causes the difference in Cd content in oat grains.

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