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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
26/01/2018 |
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Data da última atualização: |
26/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAIS JÚNIOR, O. P.; BRESEGHELLO, F.; DUARTE, J. B.; MORAIS, O. P.; RANGEL, P. H. N.; COELHO, A. S. G. |
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Afiliação: |
ODILON PEIXOTO MORAIS JUNIOR; FLAVIO BRESEGHELLO, CNPAF; JOAO BATISTA DUARTE, UFG; ORLANDO PEIXOTO DE MORAIS, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ALEXANDRE S. G. COELHO, UFG. |
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Título: |
Effectiveness of recurrent selection in irrigated rice breeding. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Crop Science, v. 57, n. 6, p. 3043-3058, Nov./Dec. 2017. |
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DOI: |
10.2135/cropsci2017.05.0276 |
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Idioma: |
Inglês |
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Conteúdo: |
Plant breeding for quantitative traits is a complicated task; thus, the recurrent selection method has been used in the rice (Oryza sativa L.) breeding program at the Brazilian Agricultural Research Corporation (Embrapa). Our general objective was to assess the effectiveness of this method in achieving genetic progress, maintaining genetic variability, and increasing the potential for selection of superior lines. A genetically broad-based population of irrigated rice, CNA12S, submitted to three selection cycles was used in this study. The dataset comprised 10 yield trials, in which 667 S1:3 progenies and six check cultivars were assessed for grain yield, plant height, and days to flowering. We measured effective population size in each cycle, using standard and linkage disequilibrium methods, and Nei's genetic diversity in the third cycle. Such analyses were performed using data of single-nucleotide polymorphism markers from progenies of the third cycle. For estimating the genetic gain, we adapted a generalized linear regression method to the Bayesian approach. This approach was also used to estimate variance and covariance components, according to the multivariate linear mixed model. Magnitudes of genetic and relative variation coefficients, as well as Nei?s genetic diversity, indicated maintenance of genetic variability over cycles. Mean genetic gain per year was 1.98% for grain yield and -1.29% for days to flowering. Genetic potential of the population for extraction of superior lines was increased, considering single-, two-, or three-trait selection. Our results show the effectiveness of the recurrent selection method when applied in rice breeding, although some refinements in the selection strategy could further improve its efficiency. MenosPlant breeding for quantitative traits is a complicated task; thus, the recurrent selection method has been used in the rice (Oryza sativa L.) breeding program at the Brazilian Agricultural Research Corporation (Embrapa). Our general objective was to assess the effectiveness of this method in achieving genetic progress, maintaining genetic variability, and increasing the potential for selection of superior lines. A genetically broad-based population of irrigated rice, CNA12S, submitted to three selection cycles was used in this study. The dataset comprised 10 yield trials, in which 667 S1:3 progenies and six check cultivars were assessed for grain yield, plant height, and days to flowering. We measured effective population size in each cycle, using standard and linkage disequilibrium methods, and Nei's genetic diversity in the third cycle. Such analyses were performed using data of single-nucleotide polymorphism markers from progenies of the third cycle. For estimating the genetic gain, we adapted a generalized linear regression method to the Bayesian approach. This approach was also used to estimate variance and covariance components, according to the multivariate linear mixed model. Magnitudes of genetic and relative variation coefficients, as well as Nei?s genetic diversity, indicated maintenance of genetic variability over cycles. Mean genetic gain per year was 1.98% for grain yield and -1.29% for days to flowering. Genetic potential of the population for extraction of s... Mostrar Tudo |
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Thesagro: |
Arroz irrigado; Melhoramento genético vegetal; Oryza sativa; Seleção recorrente. |
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Thesaurus Nal: |
Recurrent selection; Rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02553naa a2200265 a 4500
001 2086482
005 2018-01-26
008 2017 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2017.05.0276$2DOI
100 1 $aMORAIS JÚNIOR, O. P.
245 $aEffectiveness of recurrent selection in irrigated rice breeding.$h[electronic resource]
260 $c2017
520 $aPlant breeding for quantitative traits is a complicated task; thus, the recurrent selection method has been used in the rice (Oryza sativa L.) breeding program at the Brazilian Agricultural Research Corporation (Embrapa). Our general objective was to assess the effectiveness of this method in achieving genetic progress, maintaining genetic variability, and increasing the potential for selection of superior lines. A genetically broad-based population of irrigated rice, CNA12S, submitted to three selection cycles was used in this study. The dataset comprised 10 yield trials, in which 667 S1:3 progenies and six check cultivars were assessed for grain yield, plant height, and days to flowering. We measured effective population size in each cycle, using standard and linkage disequilibrium methods, and Nei's genetic diversity in the third cycle. Such analyses were performed using data of single-nucleotide polymorphism markers from progenies of the third cycle. For estimating the genetic gain, we adapted a generalized linear regression method to the Bayesian approach. This approach was also used to estimate variance and covariance components, according to the multivariate linear mixed model. Magnitudes of genetic and relative variation coefficients, as well as Nei?s genetic diversity, indicated maintenance of genetic variability over cycles. Mean genetic gain per year was 1.98% for grain yield and -1.29% for days to flowering. Genetic potential of the population for extraction of superior lines was increased, considering single-, two-, or three-trait selection. Our results show the effectiveness of the recurrent selection method when applied in rice breeding, although some refinements in the selection strategy could further improve its efficiency.
650 $aRecurrent selection
650 $aRice
650 $aArroz irrigado
650 $aMelhoramento genético vegetal
650 $aOryza sativa
650 $aSeleção recorrente
700 1 $aBRESEGHELLO, F.
700 1 $aDUARTE, J. B.
700 1 $aMORAIS, O. P.
700 1 $aRANGEL, P. H. N.
700 1 $aCOELHO, A. S. G.
773 $tCrop Science$gv. 57, n. 6, p. 3043-3058, Nov./Dec. 2017.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| 3. |  | WALTER, B. M. T.; GUARINO, E. S. G. Comparação do método de parcelas com o "levantamento rápido" para amostragem da vegetação arbórea do cerrado sentido restrito. In: CONGRESSO NACIONAL DE BOTÂNICA, 54.; REUNIÃO AMAZÔNICA DE BOTÂNICA, 3., 2003, Belém, PA. Desafios da botânica brasileira no novo milênio: inventário, sistematização, conservação e uso da biodiversidade vegetal: anais. Belém, PA: Sociedade Botânica do Brasil: Universidade Federal Rural da Amazônia: Museu Paraense Emílio Goeldi: Embrapa Amazônia Oriental, 2003.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 7. | | GUARINO, E. de S. G.; SCARIOT, A. O. Efeito da cobertura de gramíneas e forma de semeadura na germinação de espécies de árvores em pastagens abandonadas no Vale do Rio Paranã. In: CONGRESSO NACIONAL DE BOTÂNICA, 57.; ENCONTRO ESTADUAL DE BOTÂNICOS, 13.; ENCONTRO ESTADUAL DE HERBÁRIOS, 5., 2006, Gramado, RS. [Anais...]. Porto Alegre, RS: Sociedade Botânica do Brasil, 2006. Não paginado.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 10. | | GUARINO, E. de S. G.; ARAUJO, H. J. B. de. Manejo florestal comunitário na Amazônia: o caso do Acre. In: SIVIERO, A.; MING, L. C.; SILVEIRA, M.; DALY, D. C.; WALLACE, R. H. (org.). Etnobotânica e botânica econômica do Acre. Rio Branco, AC: Edufac, 2016. cap. 28, p. 398-409.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Acre. |
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| 18. | | HENZEL, A. B. D.; REAL, I.; GUARINO, E. de S. G.; SCHIEDECK, G.; MAUCH, C. R. Allelopathic potencial of aqueous extracts from Tithonia diversifolia(Hemsl.) A. Gray. Scientia Agraria Paranaensis, v. 21, n. 4, oct./dec., p. 398-403, 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 19. | | SALOMÃO, A. N.; SEVILHA, A. C.; BARBOSA, N. F.; GUARINO, E. S. G.; SCARIOT, A. Avaliação preliminar da longevidade e da predação de Spondias mombin L., em bancos de sementes em florestas estacionais deciduais do vale do rio Paranã. In: SIMPOSIO ECOLOGIA E BIODIVERSIDADE DO CERRADO, 2002, Brasilia, DF. Perspectivas e desafios para o seculo 21: [programa e resumos]. Brasilia: Embrapa Sede, 2002. p. 37.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 151 | |
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