Data/hora: 15/06/2024 01:23:44

Biblioteca(s): | Embrapa Acre; Embrapa Arroz e Feijão.
Data corrente: | 13/10/2004
Data da última atualização: | 28/07/2021
Autoria: | MENDONÇA, H. A.; SANTOS, J. B. dos; RAMALHO, M. A. P.
Afiliação: | HÉLIA ALVES MENDONÇA, CPAF-AC; JOÃO BOSCO DOS SANTOS, Universidade Federal de Lavras (UFLA), MG; MAGNO ANTÔNIO PATTO RAMALHO, Universidade Federal de Lavras (UFLA), MG.
Título: | Selection of common bean segregating populations using genetic and phenotypic parameters and RAPD markers.
Ano de publicação: | 2002
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 2, n. 2, p. 219-226, 2002.
ISSN: | 1984-7033 (impresso)
DOI: | 10.12702/1984-7033.v02n02a08
Idioma: | Inglês
Conteúdo: | In an attempt to identify strategies for choosing common bean segregating populations, the diallel parameters, the contribution of monozygous (m+a') and heterozygous ((d) loci, the heritability (H2a), the genetic distance (RAPD), and the selection potential (Z) were estimated in a study carried our in two stages. In the first, 30 hybrid combinations (partial diallel) were assessed in the F2 and F3 generations. Increasing grain yield was due dominance effect (d) although, both GCA and SCA were significant, d varied greatly and gave an information like SCA, however h2a alone was not indicative of success in a breeding program. In the second stage, five populations with lesser d and five with lighter were selected, and twenty-seven families were taken from each, which were assessed with the parents and seven controls. The estimated parameters were used to check those from the first stage. There was partial agreement among the estimates and the percentages of lines superior to Pérola cultivar, which suggests that two or more estimates are needed to identify the promising segregating populations.
Palavras-Chave: | Fitomejoramiento; Frijoles; Genetic and phenotypic parameters; Marcador RAPD; Marcadores genéticos; Mean components; Molecular marker; Parâmetro fenotípico; Partial diallel; RAPD; RAPD markers.
Thesagro: | Feijão; Marcador molecular; Melhoramento genético vegetal; Parâmetro genético; Phaseolus Vulgaris.
Thesaurus Nal: | Beans; Genetic markers; Plant breeding.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/114995/1/17388.pdf
Registro original: | Embrapa Acre (CPAF-AC)

Exemplares:

CNPAF - (21711-1) - ADD - AP - DD - 2002 -  - 2002 - DIS
CPAF-AC - (17388-1) - UPC - AP - PP - SP 174 -  - 2008.00651 - DES
CPAF-AC - (17388-2) - UPC - AP - DD -  -  -  - DIS