Genome-wide linkage mapping of QTL for root hair length in a Chinese common wheat population

作     者：Feng Huang Zhaoyan Chen Dejie Du Panfeng Guan Lingling Chai Weilong Guo Zhaorong Hu Mingming Xin Huiru Peng Yingyin Yao Zhongfu Ni Feng Huang;Zhaoyan Chen;Dejie Du;Panfeng Guan;Lingling Chai;Weilong Guo;Zhaorong Hu;Mingming Xin;Huiru Peng;Yingyin Yao;Zhongfu Ni

作者机构：Key Laboratory of Crop Heterosis and Utilization(MOE)/State Key Laboratory for Agrobiotechnology/Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China National Plant Gene Research CenterBeijing 100193China Zhoukou Academy of Agriculture SciencesZhoukou 466001HenanChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2020年第8卷第6期

页      面：1049-1056页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 

基　　金：supported by the National Key Research and Development Program of China(2017YFD0101004) the National Natural Science Foundation of China(31991214) 

主　　题：GWAS QTL mapping STARP marker Triticum aestivum 

摘      要：Root hairs are fast growing,ephemeral tubular extensions of the root epidermis that aid nutrient and water *** aim of the present study was to identify QTL for root hair length(RHL)using 227 F8 recombinant inbred lines(RILs)derived from a cross of Zhou 8425 B(Z8425 B)and Chinese Spring(CS),and to develop convenient molecular markers for markerassisted breeding in *** of variance of root hair length showed significant differences(P2.5)for RHL were identified on chromosomes 1 B(2),2 D and 6 D and four putative QTL(2≤LOD≤2.5)were detected on chromosomes 1 A,3 A,6 B,and 7 B,explaining 3.32%–6.52%of the phenotypic *** positive alleles for increased RHL of QTL on chromosomes 2 D,6 B and 6 D(***-2 D,q ***-6 B,and ***-6 D)were contributed by Z8425 B,and CS contributed positive QTL alleles on chromosomes 1 A(q ***-1 A),1 B(***-1 B.1 and ***-1 B.2),3 A(q ***-3 A)and 7 B(q ***-7 B).STARP markers were developed for ***-1 B.1,***-2 D,***-6 D,and q ***-7 *** and association analysis indicated that the positive allele of ***-6 D had been strongly selected in Chinese wheat breeding ***,the identified QTL for root hair length are likely to be useful for marker-assisted selection.