Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield

Natural selection acts to select better adapted individuals or alleles in segregating population and help plant breeding. The objective of this work was to verify the effect of natural selection on microsatellite alleles as indicators of better adaptation and identification of quantitative trait loc...

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Autores principales:	Leite,Monik Evelin, Santos,João Bosco dos, Carneiro,Flávia Fernandes, Couto,Karla Rodrigues
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2011
Materias:	bulk method fitness coefficient Phaseolus vulgaris SSR markers
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100005
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spelling	oai:scielo:S0717-345820110001000052011-05-24Natural selection in common bean microsatellite alleles and identification of QTLs for grain yieldLeite,Monik EvelinSantos,João Bosco dosCarneiro,Flávia FernandesCouto,Karla Rodrigues bulk method fitness coefficient Phaseolus vulgaris SSR markers Natural selection acts to select better adapted individuals or alleles in segregating population and help plant breeding. The objective of this work was to verify the effect of natural selection on microsatellite alleles as indicators of better adaptation and identification of quantitative trait loci (QTLs) for grain yield. This study evaluated 107 progenies from the F8 and 107 from the F24 generation derived from crossing Carioca MG and ESAL 686 lines, carried out by the bulk method, and evaluated in three different seasons: winter 2001; rainy 2001 and dry 2002. It was utilized 22 polymorphic markers and the natural selection acted in all of them. The frequency of the alleles of the parent Carioca MG, the most adapted, was increased in all of the 22 loci in F8 and 19 loci in F24. Selection affected each locus with different intensities in different generations. All of the selected alleles can be important for breeding program. QTLs were identified in generation F8 and F24 at varied magnitudes. The best marker PVttc002 explained 11.76% of variation in grain yield. However, an elevated interaction between QTLs and the environments was observed, showing the great difficulty in assisted selection.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.14 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100005en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bulk method fitness coefficient Phaseolus vulgaris SSR markers
spellingShingle	bulk method fitness coefficient Phaseolus vulgaris SSR markers Leite,Monik Evelin Santos,João Bosco dos Carneiro,Flávia Fernandes Couto,Karla Rodrigues Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
description	Natural selection acts to select better adapted individuals or alleles in segregating population and help plant breeding. The objective of this work was to verify the effect of natural selection on microsatellite alleles as indicators of better adaptation and identification of quantitative trait loci (QTLs) for grain yield. This study evaluated 107 progenies from the F8 and 107 from the F24 generation derived from crossing Carioca MG and ESAL 686 lines, carried out by the bulk method, and evaluated in three different seasons: winter 2001; rainy 2001 and dry 2002. It was utilized 22 polymorphic markers and the natural selection acted in all of them. The frequency of the alleles of the parent Carioca MG, the most adapted, was increased in all of the 22 loci in F8 and 19 loci in F24. Selection affected each locus with different intensities in different generations. All of the selected alleles can be important for breeding program. QTLs were identified in generation F8 and F24 at varied magnitudes. The best marker PVttc002 explained 11.76% of variation in grain yield. However, an elevated interaction between QTLs and the environments was observed, showing the great difficulty in assisted selection.
author	Leite,Monik Evelin Santos,João Bosco dos Carneiro,Flávia Fernandes Couto,Karla Rodrigues
author_facet	Leite,Monik Evelin Santos,João Bosco dos Carneiro,Flávia Fernandes Couto,Karla Rodrigues
author_sort	Leite,Monik Evelin
title	Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
title_short	Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
title_full	Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
title_fullStr	Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
title_full_unstemmed	Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
title_sort	natural selection in common bean microsatellite alleles and identification of qtls for grain yield
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100005
work_keys_str_mv	AT leitemonikevelin naturalselectionincommonbeanmicrosatelliteallelesandidentificationofqtlsforgrainyield AT santosjoaoboscodos naturalselectionincommonbeanmicrosatelliteallelesandidentificationofqtlsforgrainyield AT carneiroflaviafernandes naturalselectionincommonbeanmicrosatelliteallelesandidentificationofqtlsforgrainyield AT coutokarlarodrigues naturalselectionincommonbeanmicrosatelliteallelesandidentificationofqtlsforgrainyield
_version_	1718441830644711424

Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield

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