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| Grain cadmium enrichment characteristics and safety risk assessment of different oat varieties |
| Received:February 25, 2022 |
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| KeyWord:oat;cadmium;enrichment coefficient;transport coefficient;safety risk assessment |
| Author Name | Affiliation | E-mail | | MA Fengyi | College of Agriculture, Inner Mongolia Agricultural University, Hohhot 010010, China | | | ZHAO Baoping | College of Agriculture, Inner Mongolia Agricultural University, Hohhot 010010, China | zhaobaoping82@163.com | | ZHANG Ru | College of Agriculture, Inner Mongolia Agricultural University, Hohhot 010010, China | | | YANG Bo | Bayannaoer City Cultivated Land Quality Monitoring and Protection Center, Bayannaoer 015000, China | | | WANG Yongning | Inner Mongolia Agriculture and Animal Husbandry Ecological and Resource Protection Center, Hohhot 010000, China | | | GUO Xiaoyu | Inner Mongolia Agriculture and Animal Husbandry Ecological and Resource Protection Center, Hohhot 010000, China | | | CHEN Miao | Urad Rear Banner Eco-Energy and Environmental Protection Station in a Rural Pastoral Area, Bayannaoer 015500, China | | | LIU Jinghui | College of Agriculture, Inner Mongolia Agricultural University, Hohhot 010010, China | |
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| Abstract: |
| 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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