文献类型： 外文期刊
作者： Wang, Yue 1 ; Xu, Xiaoting 1 ; Hao, Yuanfeng 1 ; Zhang, Yelun 2 ; Liu, Yuping 2 ; Pu, Zongjun 3 ; Tian, Yubing 1 ; Xu, De 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Wheat Improvement Ctr, Beijing, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Hebei Lab Crop Genet & Breeding, Shijiazhuang, Hebei, Peoples R China
3.Sichuan Acad Agr Sci, Inst Crop Sci, Chengdu, Peoples R China
4.Chinese Acad Agr Sci, Int Maize & Wheat Improvement Ctr CIMMYT China Of, Beijing, Peoples R China
关键词： Triticum aestivum; mineral biofortification; quantitative trait locus; 50K SNP array; KASP marker
期刊名称：FRONTIERS IN NUTRITION （ 影响因子：6.576； ）
ISSN： 2296-861X
年卷期： 2021 年 8 卷
页码：
收录情况： SCI
摘要： Deficiency of micronutrient elements, such as zinc (Zn) and iron (Fe), is called "hidden hunger," and bio-fortification is the most effective way to overcome the problem. In this study, a high-density Affymetrix 50K single-nucleotide polymorphism (SNP) array was used to map quantitative trait loci (QTL) for grain Zn (GZn) and grain Fe (GFe) concentrations in 254 recombinant inbred lines (RILs) from a cross Jingdong 8/Bainong AK58 in nine environments. There was a wide range of variation in GZn and GFe concentrations among the RILs, with the largest effect contributed by the line x environment interaction, followed by line and environmental effects. The broad sense heritabilities of GZn and GFe were 0.36 +/- 0.03 and 0.39 +/- 0.03, respectively. Seven QTL for GZn on chromosomes 1DS, 2AS, 3BS, 4DS, 6AS, 6DL, and 7BL accounted for 2.2-25.1% of the phenotypic variances, and four QTL for GFe on chromosomes 3BL, 4DS, 6AS, and 7BL explained 2.3-30.4% of the phenotypic variances. QTL on chromosomes 4DS, 6AS, and 7BL might have pleiotropic effects on both GZn and GFe that were validated on a germplasm panel. Closely linked SNP markers were converted to high-throughput KASP markers, providing valuable tools for selection of improved Zn and Fe bio-fortification in breeding.
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