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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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The genetic dissection of quantitative traits in crops Electron. J. Biotechnol.
Semagn,Kassa; Bjørnstad,Åsmund; Xu,Yunbi.
Most traits of interest in plant breeding show quantitative inheritance, which complicate the breeding process since phenotypic performances only partially reflects the genetic values of individuals. The genetic variation of a quantitative trait is assumed to be controlled by the collective effects of quantitative trait loci (QTLs), epistasis (interaction between QTLs), the environment, and interaction between QTL and environment. Exploiting molecular markers in breeding involve finding a subset of markers associated with one or more QTLs that regulate the expression of complex traits. Many QTL mapping studies conducted in the last two decades identified QTLs that generally explained a significant proportion of the phenotypic variance, and therefore, gave...
Tipo: Journal article Palavras-chave: Association mapping; Linkage disequilibrium; Markers assisted selection; Molecular breeding; Molecular markers; Quantitative trait; QTL mapping; QTL analysis.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500016
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