Genome-wide identification of quantitative trait loci for morpho-agronomic and yield-related traits in foxtail millet (Setaria italica) across multi-environments
文献类型： 外文期刊
作者： Liu, Tianpeng 1 ; He, Jihong 2 ; Dong, Kongjun 2 ; Wang, Xuewen 3 ; Zhang, Lei 2 ; Ren, Ruiyu 2 ; Huang, Sha 1 ; Sun, Xiaoting 1 ; Pan, Wanxiang 4 ; Wang, Wenwen 1 ; Yang, Peng 1 ; Yang, Tianyu 2 ; Zhang, Zhengsheng 1 ;
作者机构： 1.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400716, Peoples R China
2.Gansu Acad Agr Sci, Crop Res Inst, Lanzhou 730070, Peoples R China
3.Univ Georgia, Inst Plant Breeding Genet & Genom, Athens, GA 30601 USA
4.Gansu Agr Univ, Coll Life Sci & Technol, Lanzhou 730070, Peoples R China
关键词： Setaria italica; Linkage map; Morpho-agronomic trait; Yield-related traits; QTL
期刊名称：MOLECULAR GENETICS AND GENOMICS （ 影响因子：2.98； 五年影响因子：3.207 ）
ISSN： 1617-4615
年卷期： 2022 年 297 卷 3 期
页码：
收录情况： SCI
摘要： Foxtail millet (Setaria italica) is an ideal model of genetic system for functional genomics of the Panicoideae crop. Identification of QTL responsible for morpho-agronomic and yield-related traits facilitates dissection of genetic control and breeding in cereal crops. Here, based on a Yugu1 x Longgu7 RIL population and genome-wide resequencing data, an updated linkage map harboring 2297 bin and 74 SSR markers was constructed, spanning 1315.1 cM with an average distance of 0.56 cM between adjacent markers. A total of 221 QTL for 17 morpho-agronomic and yield-related traits explaining 5.5 similar to 36% of phenotypic variation were identified across multi-environments. Of these, 109 QTL were detected in two to nine environments, including the most stable qLMS6.1 harboring a promising candidate gene Seita.6G250500, of which 70 were repeatedly identified in different trials in the same geographic location, suggesting that foxtail millet has more identical genetic modules under the similar ecological environment. One hundred-thirty QTL with overlapping intervals formed 22 QTL clusters. Furthermore, six superior recombinant inbred lines, RIL35, RIL48, RIL77, RIL80, RIL115 and RIL125 with transgressive inheritance and enrichment of favorable alleles in plant height, tiller, panicle morphology and yield related-traits were screened by hierarchical cluster. These identified QTL, QTL clusters and superior lines lay ground for further gene-trait association studies and breeding practice in foxtail millet.
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