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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/01/2018 |
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Data da última atualização: |
18/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BOREL, J. C.; RAMALHO, M. A. P.; ABREU, A. F. B. |
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Afiliação: |
J. C. BOREL, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO, Petrolina-PE; MAGNO ANTONIO PATTO RAMALHO, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF. |
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Título: |
Epistasis in intra- and inter-gene pool crosses of the common bean. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 15, n. 1, gmr15017573, Feb. 2016. |
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ISSN: |
1676-5680 |
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DOI: |
10.4238/gmr.15017573 |
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Idioma: |
Inglês |
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Conteúdo: |
Epistasis has been shown to have an important role in the genetic control of several quantitative traits in the common bean. This study aimed to investigate the occurrence of epistasis in intra-and inter-pool gene crosses of the common bean. Four elite lines adapted to Brazilian conditions were used as parents, two from the Andean gene pool (ESAL 686; BRS Radiante) and two from the Mesoamerican gene pool (BRSMG Majestoso; BRS Valente). Four F-2 populations were obtained: "A" (ESAL 686 x BRS Radiante), "B" (BRSMG Majestoso x BRS Valente), "C" (BRS Radiante x BRSMG Majestoso), and "D" (BRS Valente x ESAL 686). A random sample of F2 plants from each population was backcrossed to parents and F-1 individuals, according to the triple test cross. Three types of progenies from each population were evaluated in contiguous trials. Seed yield and 100-seed weight were evaluated. Dominance genetic variance was predominant in most cases. However, the estimates of genetic variance may be biased by the occurrence of linkage disequilibrium and epistasis. Epistasis was detected for both traits; however, the occurrence differed among the populations and between the two traits. The results of this study reinforce the hypothesis that epistasis is present in the genetic control of traits in the common bean and suggest that the phenomenon is more frequent in inter-gene pool crosses than in intra-gene pool crosses. |
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Palavras-Chave: |
Triple test cross. |
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Thesagro: |
Feijão; Melhoramento genético vegetal; Phaseolus vulgaris. |
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Thesaurus Nal: |
Beans; Outbreeding depression; Plant breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171292/1/CNPAF-2016-gmrabreu.pdf
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Marc: |
LEADER 02162naa a2200253 a 4500
001 2085752
005 2018-01-18
008 2016 bl uuuu u00u1 u #d
022 $a1676-5680
024 7 $a10.4238/gmr.15017573$2DOI
100 1 $aBOREL, J. C.
245 $aEpistasis in intra- and inter-gene pool crosses of the common bean.$h[electronic resource]
260 $c2016
520 $aEpistasis has been shown to have an important role in the genetic control of several quantitative traits in the common bean. This study aimed to investigate the occurrence of epistasis in intra-and inter-pool gene crosses of the common bean. Four elite lines adapted to Brazilian conditions were used as parents, two from the Andean gene pool (ESAL 686; BRS Radiante) and two from the Mesoamerican gene pool (BRSMG Majestoso; BRS Valente). Four F-2 populations were obtained: "A" (ESAL 686 x BRS Radiante), "B" (BRSMG Majestoso x BRS Valente), "C" (BRS Radiante x BRSMG Majestoso), and "D" (BRS Valente x ESAL 686). A random sample of F2 plants from each population was backcrossed to parents and F-1 individuals, according to the triple test cross. Three types of progenies from each population were evaluated in contiguous trials. Seed yield and 100-seed weight were evaluated. Dominance genetic variance was predominant in most cases. However, the estimates of genetic variance may be biased by the occurrence of linkage disequilibrium and epistasis. Epistasis was detected for both traits; however, the occurrence differed among the populations and between the two traits. The results of this study reinforce the hypothesis that epistasis is present in the genetic control of traits in the common bean and suggest that the phenomenon is more frequent in inter-gene pool crosses than in intra-gene pool crosses.
650 $aBeans
650 $aOutbreeding depression
650 $aPlant breeding
650 $aFeijão
650 $aMelhoramento genético vegetal
650 $aPhaseolus vulgaris
653 $aTriple test cross
700 1 $aRAMALHO, M. A. P.
700 1 $aABREU, A. F. B.
773 $tGenetics and Molecular Research$gv. 15, n. 1, gmr15017573, Feb. 2016.
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Embrapa Arroz e Feijão (CNPAF) |
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| 148. |  | MAGALHAES, P. C.; PEREIRA FILHO, I. A.; PAIVA, E.; RAMALHO, M. A. P. Competição de plantas de milho e feijão consorciadas através do isolamento com tubos de PVC. In: CONGRESSO NACIONAL DE MILHO E SORGO, 19.; REUNIÃO TÉCNICA ANUAL DE MILHO, 37.; REUNIÃO TÉCNICA ANUAL DO SORGO, 21., 1992, Porto Alegre. Resumos. Porto Alegre: SAA, 1992. p. 109.| Tipo: Resumo em Anais de Congresso |
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