Abstract
Cadmium (Cd) is an element that is nonessential and extremely toxic to both plants and human beings. Soil contaminated with Cd has adverse impacts on crop yields and threatens human health via the food chain. Cultivation of low-Cd cultivars has been of particular interest and is one of the most cost-effective and promising approaches to minimize human dietary intake of Cd. Low-Cd crop cultivars should meet particular criteria, including acceptable yield and quality, and their edible parts should have Cd concentrations below maximum permissible concentrations for safe consumption, even when grown in Cd-contaminated soil. Several low-Cd cereal cultivars and genotypes have been developed worldwide through cultivar screening and conventional breeding. Molecular markers are powerful in facilitating the selection of low-Cd cereal cultivars. Modern molecular breeding technologies may have great potential in breeding programs for the development of low-Cd cultivars, especially when coupled with conventional breeding. In this review, we provide a synthesis of low-Cd cereal breeding.
概要
镉(Cd)是毒性最强和农田受污染最普遍的重金属之一。土壤镉污染严重影响作物的产量和品质,并可通过食物链富集,从而危害人体健康。选育和种植食用部位镉低积累的作物品种是经济有效利用镉污染土壤,保证农产品安全生产,有效降低镉进入食物链的一条经济、有效的途径。本文主要介绍了近年来国内外在禾谷类作物镉低积累相关数量性状位点(QTL)定位、基因挖掘及其在低镉积累育种中的应用的最新成果;概述了镉低积累作物品种的定义、特征与选育方法,为低镉积累分子育种与生产提供理论指导。
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The authors would like to thank Prof. Guo-ping ZHANG (Zhejiang University, Hangzhou, China) for instructing the writing of this manuscript.
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Qin CHEN and Fei-bo WU declare that they have no conflict of interest.
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Project supported by the Key Research Foundation of Science and Technology Department of Zhejiang Province of China (No. 2016C02050-9-7)
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Chen, Q., Wu, Fb. Breeding for low cadmium accumulation cereals. J. Zhejiang Univ. Sci. B 21, 442–459 (2020). https://doi.org/10.1631/jzus.B1900576
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DOI: https://doi.org/10.1631/jzus.B1900576