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| Registros recuperados : 281 | |
| 58. |  | CAMARÃO, A. P.; TEIXEIRA NETO, J. F.; AZEVEDO, G. P. C. de; NERY, A. Introdução e avaliação de forrageiras em pastagens nativas da Ilha de Marajó. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 36., 1999, Porto Alegre. Anais do simpósios e workshops... Porto Alegre: SBZ, 1999. Resumo publicado também em: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 36., 1999, Porto Alegre. Resumos dos trabalhos apresentados... Porto Alegre: Sociedade Brasileira de Zootecnia, 1999. p. 71.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 59. | | GONÇALVES, C. A.; CAMARÃO, A. P.; SIMÃO NETO, M.; DUTRA, S.; SOBRINHO JUNIOR, C. de M. Intervalo e altura de avaliação em pastagens consorciadas de Brachiaria humidicola e Stylosanthes guianensis, na região do nordeste paraense. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 39., 2002, Recife. Anais. Recife: UFRPe: SBZ, 2002. Resumo expandido.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 60. | | GONÇALVES, C. A.; RODRIGUES FILHO, J. A.; CAMARÃO, A. P.; DUTRA, S. Intervalo entre partos de vacas leiteiras em pastagem de capim-tobiatã com e sem suplementação de concentrado no nordeste paraense. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: SBZ: Embrapa Gado de Corte, 2004. 20 p. 1 CD-ROM. Disponibilidade de forragem; Disponibilidade de folha; Digestibilidade; Manejo reprodutivo; Proteína bruta.| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 281 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
01/03/2021 |
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Data da última atualização: |
01/03/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
RAMOS M. R. F.; MENDONÇA, J. A.; VIANELLO, R. P.; MORAIS JÚNIOR, O. P. de; COLOMBARI FILHO, J. M.; BORBA, T. C. de O.; CASTRO, A. P. de; BRONDANI, C. |
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Afiliação: |
MARIANA RODRIGUES FEITOSA RAMOS, UFG; JOAO ANTONIO MENDONCA, CNPAF; ROSANA PEREIRA VIANELLO, CNPAF; ODILON PEIXOTO DE MORAIS JUNIOR, UFG; JOSE MANOEL COLOMBARI FILHO, CNPAF; TEREZA CRISTINA DE OLIVEIRA BORBA, CNPAF; ADRIANO PEREIRA DE CASTRO, CNPAF; CLAUDIO BRONDANI, CNPAF. |
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Título: |
Heterosis and combining ability for grain yield and earliness in accessions ofa rice core collection. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Functional Plant Breeding Journal, v. 1, n. 1, article 5, Jan./Mar. 2019. |
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ISSN: |
2595-9433 |
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DOI: |
http://dx.doi.org/10.35418/2526-4117/v1n1a5 |
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Idioma: |
Inglês |
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Conteúdo: |
Rice has extensive collections of germplasm, but a small fraction of genotypes are used in breeding programs worldwide. This aimed to assess the heterosis and the combining ability for higher grain yield and earliness, and their correlations to genetic distance among accessions belonging to the Embrapa ́s Rice Core Collection. Crosses were made in complete diallel, without the reciprocals, being phenotyped in generations F2 and F7 for grain yield (GY) and days to flowering (DTF). It were estimated the varietal effect, mean heterosis, varietal heterosis, specific combining abilityand general combining ability (GCA) of the parents in each generation. For the selection of new lines, the combinations involving the genitors with the highest magnitudes and positive effects for GCA were considered more promising for the GY, of which Canela Curta, Maninjau, Epagri 108 and Diamante stood out, and were also the most productive. For the DTF, the genitors with the largest earliness estimates were Araguaia, CT11632, Irat 122, Pratinha Branco and Tox 503. The recommended parameters for estimating GY in F7 generation from the data of the F2 generation were the mean of GY, GCA and the mean Rogers-W genetic distance coefficient. Crosses with Rogers-W distance coefficients above 0.9 showed higher GY and earliness in F7 generation, whereas in F2 the superior crosses were those that showed Rogers-W between 0.7 and 0.89. The above genotypes and the specific combinations identified may lead to new rice cultivars. MenosRice has extensive collections of germplasm, but a small fraction of genotypes are used in breeding programs worldwide. This aimed to assess the heterosis and the combining ability for higher grain yield and earliness, and their correlations to genetic distance among accessions belonging to the Embrapa ́s Rice Core Collection. Crosses were made in complete diallel, without the reciprocals, being phenotyped in generations F2 and F7 for grain yield (GY) and days to flowering (DTF). It were estimated the varietal effect, mean heterosis, varietal heterosis, specific combining abilityand general combining ability (GCA) of the parents in each generation. For the selection of new lines, the combinations involving the genitors with the highest magnitudes and positive effects for GCA were considered more promising for the GY, of which Canela Curta, Maninjau, Epagri 108 and Diamante stood out, and were also the most productive. For the DTF, the genitors with the largest earliness estimates were Araguaia, CT11632, Irat 122, Pratinha Branco and Tox 503. The recommended parameters for estimating GY in F7 generation from the data of the F2 generation were the mean of GY, GCA and the mean Rogers-W genetic distance coefficient. Crosses with Rogers-W distance coefficients above 0.9 showed higher GY and earliness in F7 generation, whereas in F2 the superior crosses were those that showed Rogers-W between 0.7 and 0.89. The above genotypes and the specific combinations identified may lead ... Mostrar Tudo |
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Palavras-Chave: |
Genetic divergence; Molecular breeding; SSR markers. |
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Thesagro: |
Arroz; Genética Molecular; Marcador Molecular; Oryza Sativa; Variação Genética. |
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Thesaurus NAL: |
Diallel analysis; Genetic markers; Molecular genetics; Rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221577/1/fpbj-2019.pdf
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Marc: |
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008 2019 bl uuuu u00u1 u #d
022 $a2595-9433
024 7 $ahttp://dx.doi.org/10.35418/2526-4117/v1n1a5$2DOI
100 1 $aRAMOS M. R. F.
245 $aHeterosis and combining ability for grain yield and earliness in accessions ofa rice core collection.$h[electronic resource]
260 $c2019
520 $aRice has extensive collections of germplasm, but a small fraction of genotypes are used in breeding programs worldwide. This aimed to assess the heterosis and the combining ability for higher grain yield and earliness, and their correlations to genetic distance among accessions belonging to the Embrapa ́s Rice Core Collection. Crosses were made in complete diallel, without the reciprocals, being phenotyped in generations F2 and F7 for grain yield (GY) and days to flowering (DTF). It were estimated the varietal effect, mean heterosis, varietal heterosis, specific combining abilityand general combining ability (GCA) of the parents in each generation. For the selection of new lines, the combinations involving the genitors with the highest magnitudes and positive effects for GCA were considered more promising for the GY, of which Canela Curta, Maninjau, Epagri 108 and Diamante stood out, and were also the most productive. For the DTF, the genitors with the largest earliness estimates were Araguaia, CT11632, Irat 122, Pratinha Branco and Tox 503. The recommended parameters for estimating GY in F7 generation from the data of the F2 generation were the mean of GY, GCA and the mean Rogers-W genetic distance coefficient. Crosses with Rogers-W distance coefficients above 0.9 showed higher GY and earliness in F7 generation, whereas in F2 the superior crosses were those that showed Rogers-W between 0.7 and 0.89. The above genotypes and the specific combinations identified may lead to new rice cultivars.
650 $aDiallel analysis
650 $aGenetic markers
650 $aMolecular genetics
650 $aRice
650 $aArroz
650 $aGenética Molecular
650 $aMarcador Molecular
650 $aOryza Sativa
650 $aVariação Genética
653 $aGenetic divergence
653 $aMolecular breeding
653 $aSSR markers
700 1 $aMENDONÇA, J. A.
700 1 $aVIANELLO, R. P.
700 1 $aMORAIS JÚNIOR, O. P. de
700 1 $aCOLOMBARI FILHO, J. M.
700 1 $aBORBA, T. C. de O.
700 1 $aCASTRO, A. P. de
700 1 $aBRONDANI, C.
773 $tFunctional Plant Breeding Journal$gv. 1, n. 1, article 5, Jan./Mar. 2019.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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