Identification of major QTLs for yield-related traits with improved genetic map in wheat----中国科学院遗传发育所农业资源研究中心

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论文题目	Identification of major QTLs for yield-related traits with improved genetic map in wheat
作　　者	麻菲菲、许云峰、王瑞芳、童依平、张爱民、刘东成、安调过;
发表年度	2023
刊物名称	FRONTIERS IN PLANT SCIENCE
卷、期、页码	14; ;
影响因子
论文摘要	IntroductionIdentification of stable major quantitative trait loci (QTLs) for yield-related traits is important for yield potential improvement in wheat breeding. MethodsIn the present study, we genotyped a recombinant inbred line (RIL) population using the Wheat 660K SNP array and constructed a high-density genetic map. The genetic map showed high collinearity with the wheat genome assembly. Fourteen yield-related traits were evaluated in six environments for QTL analysis. Results and DiscussionA total of 12 environmentally stable QTLs were identified in at least three environments, explaining up to 34.7% of the phenotypic variation. Of these, QTkw-1B.2 for thousand kernel weight (TKW), QPh-2D.1 (QSl-2D.2/QScn-2D.1) for plant height (PH), spike length (SL) and spikelet compactness (SCN), QPh-4B.1 for PH, and QTss-7A.3 for total spikelet number per spike (TSS) were detected in at least five environments. A set of Kompetitive Allele Specific PCR (KASP) markers were converted based on the above QTLs and used to genotype a diversity panel comprising of 190 wheat accessions across four growing seasons. QPh-2D.1 (QSl-2D.2/QScn-2D.1), QPh-4B.1 and QTss-7A.3 were successfully validated. Compared with previous studies, QTkw-1B.2 and QPh-4B.1 should be novel QTLs. These results provided a solid foundation for further positional cloning and marker-assisted selection of the targeted QTLs in wheat breeding programs.
全文链接	http://dx.doi.org/10.3389/fpls.2023.1138696
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