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Genome-wide association study of pre-harvest sprouting resistance in Chinese wheat founder parents Genet. Mol. Biol.
Lin,Yu; Liu,Shihang; Liu,Yaxi; Liu,Yujiao; Chen,Guoyue; Xu,Jie; Deng,Mei; Jiang,Qiantao; Wei,Yuming; Lu,Yanli; Zheng,Youliang.
Abstract Pre-harvest sprouting (PHS) is a major abiotic factor affecting grain weight and quality, and is caused by an early break in seed dormancy. Association mapping (AM) is used to detect correlations between phenotypes and genotypes based on linkage disequilibrium (LD) in wheat breeding programs. We evaluated seed dormancy in 80 Chinese wheat founder parents in five environments and performed a genome-wide association study using 6,057 markers, including 93 simple sequence repeat (SSR), 1,472 diversity array technology (DArT), and 4,492 single nucleotide polymorphism (SNP) markers. The general linear model (GLM) and the mixed linear model (MLM) were used in this study, and two significant markers (tPt-7980 and wPt-6457) were identified. Both markers...
Tipo: Info:eu-repo/semantics/article Palavras-chave: General linear model; Linkage disequilibrium; Marker-trait associations; Mixed linear model; Seed dormancy.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000400620
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Linkage disequilibrium, genetic association mapping and gene localization in crop plants Genet. Mol. Biol.
Sorkheh,Karim; Malysheva-Otto,Lyudmyla V.; Wirthensohn,Michelle G.; Tarkesh-Esfahani,Saeed; Martínez-Gómez,Pedro.
DNA-based molecular markers have been extensively utilized for a variety of studies in both plant and animal systems. One of the major uses of these markers is the construction of genome-wide molecular maps and the genetic analysis of simple and complex traits. However, these studies are generally based on linkage analysis in mapping populations, thus placing serious limitations in using molecular markers for genetic analysis in a variety of plant populations. Therefore, alternative approach has been suggested, linkage disequilibrium-based association analysis which detects and locates quantitative trait loci (QTL) by the strength of the correlation between a trait and a marker. Although association analysis has already been used for studies on genetics of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Linkage disequilibrium; LD; Association mapping; Population structure; QTLs; Localization of genes; Marker-trait associations.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500001
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