Assessment and genetic analysis of heavy metal content in rice grain using an Oryza sativa x O-rufipogon backcross inbred line population

文献类型： 外文期刊

第一作者： Huang, De-run

作者： Huang, De-run;Fan, Ye-yang;Hu, Biao-lin;Zhuang, Jie-yun;Huang, De-run;Fan, Ye-yang;Hu, Biao-lin;Zhuang, Jie-yun;Hu, Biao-lin;Xiao, Ye-qing;Chen, Da-zhou;Hu, Biao-lin;Xiao, Ye-qing;Chen, Da-zhou

作者机构：

关键词： heavy metal content;brown rice;milled rice;quantitative trait locus

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

年卷期： 2018 年 98 卷 4 期

页码：

收录情况： SCI

摘要： BACKGROUNDHeavy metal accumulation in rice is a growing concern for public health. Backcross inbred lines derived from an interspecific cross of Oryza sativa x O. rufipogon were grown in two distinct ecological locations (Hangzhou and Lingshui, China). The objective of this study was to characterise the contents of heavy metal in rice grains, and to identify quantitative trait loci (QTLs) for heavy metal contents. RESULTSThe contents of Ni, As, Pb, Cr and Hg in milled rice showed a significant decline as compared with those in brown rice, whereas the content of Cd showed little change. The concentration of heavy metal in rice grain varied greatly between the two environments. A total of 24 QTLs responsible for heavy metal contents were detected, including two for both the brown and milled rice, 13 for brown rice only, and nine for milled rice only. All the QTLs except two had the enhancing alleles derived from O. rufipogon. Sixteen QTLs were clustered in six chromosomal regions. CONCLUSIONEnvironmental variation plays an important role in the heavy metal contents in rice grain. QTLs detected in this study might be useful for breeding rice varieties with low heavy metal content. (c) 2017 Society of Chemical Industry

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