QTL underlying iron and zinc toxicity tolerances at seedling stage revealed by two sets of reciprocal introgression populations of rice (Oryza sativa L.)
文献类型: 外文期刊
第一作者: Liu, Huan
作者: Liu, Huan;Qiu, Xianjin;Yang, Longwei;Xing, Danying;Soomro, Aijaz;Zheng, Tianqing;Xu, Jianlong;Zhu, Yajun;Chen, Kai;Xu, Jianlong;Xu, Jianlong
作者机构:
关键词: Rice;Reciprocal introgression lines;Iron tolerance;Zinc tolerance;Quantitative trait locus/loci (QTL)
期刊名称:CROP JOURNAL ( 影响因子:4.407; 五年影响因子:5.687 )
ISSN: 2095-5421
年卷期: 2016 年 4 卷 4 期
页码:
收录情况: SCI
摘要: Iron and zinc are two trace elements that are essential for rice. But they are toxic at higher concentrations, leading to severe rice yield losses especially in acid soils and inland valleys. In this study, two reciprocal introgression line (IL) populations sharing the same parents were used with high-density SNP bin markers to identify QTL tolerant to iron and zinc toxicities. The results indicated that the japonica variety 02,428 had stronger tolerance to iron and zinc toxicities than the indica variety Minghui 63. Nine and ten QTL contributing to iron and zinc toxicity tolerances, respectively, were identified in the two IL populations. The favorable alleles of most QTL came from 02,428. Among them, qFRRDW2, qZRRDW3, and qFRSDW11 appeared to be independent of genetic background. The region C11S49-C11S60 on chromosome 11 harbored QTL affecting multiple iron and zinc toxicity tolerance-related traits, indicating partial genetic overlap between the two toxicity tolerances. Our results provide essential information and materials for developing excellent rice cultivars with iron and/or zinc tolerance by marker-assisted selection (MAS). (C) 2016 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V.
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