Backcross assisted by microsatellite markers in common bean.
Genet Mol Res
; 7(4): 1000-10, 2008 Oct 07.
Article
em En
| MEDLINE
| ID: mdl-19048479
The objectives of the present study were to monitor the effect of backcrossing through microsatellite markers and to compare different marker assisted selection strategies. Four populations were developed using donor parents resistant to the bean golden mosaic virus and, for all crosses, only individuals resistant to the bean golden mosaic virus were backcrossed. For crosses ARC100-4 x DOR303 and ARC100-4 x PHAS8328, assisted selection was carried out in the F(2) and F(2)BC(1) generations, while in the remaining crosses selection was performed only in the F(2)BC(1) generation. For the microsatellite analysis, in each generation, 20 markers were genotyped. The molecular data were analyzed using the NTSys program and the proportion of the recurrent genome introgressed was estimated, based on genotypical configuration of the segregant populations compared to the recurrent parents. The results indicate a higher efficiency in recovering the genotype of the elite genitor through the strategy of backcross assisted selection in the successive generations, and demonstrate a practical and useful application of molecular marker technology associated with bean breeding, to reduce the number of backcrosses and the time to recover the genome of the recurrent genitors.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Repetições de Microssatélites
/
Endogamia
/
Fabaceae
Idioma:
En
Revista:
Genet Mol Res
Assunto da revista:
BIOLOGIA MOLECULAR
/
GENETICA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil