Your browser doesn't support javascript.
loading
Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
Leite, Monik Evelin; Santos, João Bosco dos; Carneiro, Flávia Fernandes; Couto, Karla Rodrigues.
  • Leite, Monik Evelin; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
  • Santos, João Bosco dos; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
  • Carneiro, Flávia Fernandes; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
  • Couto, Karla Rodrigues; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
Electron. j. biotechnol ; 14(1): 5-6, Jan. 2011. ilus, tab
Artículo en Inglés | LILACS | ID: lil-591923
ABSTRACT
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 percent of variation in grain yield. However, an elevated interaction between QTLs and the environments was observed, showing the great difficulty in assisted selection.
Asunto(s)


Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Grano Comestible Tipo de estudio: Estudio diagnóstico Idioma: Inglés Revista: Electron. j. biotechnol Asunto de la revista: Biotecnologia Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Universidade Federal de Lavras/BR

Similares

MEDLINE

...
LILACS

LIS


Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Grano Comestible Tipo de estudio: Estudio diagnóstico Idioma: Inglés Revista: Electron. j. biotechnol Asunto de la revista: Biotecnologia Año: 2011 Tipo del documento: Artículo País de afiliación: Brasil Institución/País de afiliación: Universidade Federal de Lavras/BR