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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
23/02/2018 |
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Data da última atualização: |
11/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVES, G. F.; FIGUEIREDO, U. J. de; PANDOLFI FILHO, A. D.; BARRIOS, S. C. L.; VALLE, C. B. do. |
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Afiliação: |
GEOVANI F. ALVES; ULISSES J. de FIGUEIREDO, Universidade Federal de Lavras; ANTÔNIO D. PANDOLFI FILHO, Universidade Federal do Espírito Santo; SANZIO CARVALHO LIMA BARRIOS, CNPGC; CACILDA BORGES DO VALLE, CNPGC. |
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Título: |
Breeding strategies for Brachiaria spp. to improve productivity: an ongoing project. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Tropical Grassland - Forrajes Tropicales, v. 2, p. 1-3, 2014. |
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ISSN: |
2346-3775 |
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Idioma: |
Inglês |
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Conteúdo: |
Two strategies have been used in the breeding of Brachiaria (syn. Urochloa) to produce new cultivars. The first involves exploring the natural variability exist-ing in nature, which is the selection of ecotypes, mostly apomicts, from the diversity in germplasm banks. This strategy proved efficient originally and the cultivars in use in Brazil were derived in this way, but progress with this strategy is limited in the medium to long term. The generation of novel variability through crossings is the alternative strategy to continue producing new improved varieties. This has been possible only through artificial chromosomal duplication of diploid and sexual B. ruziziensis and the fact that this species is cross-compatible with B. brizantha and B. decumbens, in Bra-zil the 2 most important species for tropical pastures. Crossings between species have been carried out at Embrapa Beef Cattle, Campo Grande, MS, Brazil, since 1988 (Valle et al. 1993, 2001; Valle 1997; Resende et al. 2007). The initial success in obtaining interspecific hy-brids in Brachiaria is indisputable and helped establish a practical methodology as well as allowed for the identi-fication of apomictic parents with good combining abil-ity. However, a comprehensive genetic improvement strategy to benefit from gains in quantitative characteris-tics associated with the majority of agronomic traits of economic interest in these species had not been started. Therefore, 3 methodologies are being used for this pur-pose: reciprocal recurrent selection; intra-population recurrent selection; and directed crosses between sexual and apomictic plants. The last 2 strategies are already underway and the strategies for agronomic evaluations are reported here. MenosTwo strategies have been used in the breeding of Brachiaria (syn. Urochloa) to produce new cultivars. The first involves exploring the natural variability exist-ing in nature, which is the selection of ecotypes, mostly apomicts, from the diversity in germplasm banks. This strategy proved efficient originally and the cultivars in use in Brazil were derived in this way, but progress with this strategy is limited in the medium to long term. The generation of novel variability through crossings is the alternative strategy to continue producing new improved varieties. This has been possible only through artificial chromosomal duplication of diploid and sexual B. ruziziensis and the fact that this species is cross-compatible with B. brizantha and B. decumbens, in Bra-zil the 2 most important species for tropical pastures. Crossings between species have been carried out at Embrapa Beef Cattle, Campo Grande, MS, Brazil, since 1988 (Valle et al. 1993, 2001; Valle 1997; Resende et al. 2007). The initial success in obtaining interspecific hy-brids in Brachiaria is indisputable and helped establish a practical methodology as well as allowed for the identi-fication of apomictic parents with good combining abil-ity. However, a comprehensive genetic improvement strategy to benefit from gains in quantitative characteris-tics associated with the majority of agronomic traits of economic interest in these species had not been started. Therefore, 3 methodologies are being used for this pur-pose... Mostrar Tudo |
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Thesagro: |
Brachiaria; Produtividade. |
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Thesaurus Nal: |
Apomixis; Interspecific hybridization; Tropical pastures. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02453naa a2200241 a 4500
001 2088118
005 2018-05-11
008 2014 bl uuuu u00u1 u #d
022 $a2346-3775
100 1 $aALVES, G. F.
245 $aBreeding strategies for Brachiaria spp. to improve productivity$ban ongoing project.$h[electronic resource]
260 $c2014
520 $aTwo strategies have been used in the breeding of Brachiaria (syn. Urochloa) to produce new cultivars. The first involves exploring the natural variability exist-ing in nature, which is the selection of ecotypes, mostly apomicts, from the diversity in germplasm banks. This strategy proved efficient originally and the cultivars in use in Brazil were derived in this way, but progress with this strategy is limited in the medium to long term. The generation of novel variability through crossings is the alternative strategy to continue producing new improved varieties. This has been possible only through artificial chromosomal duplication of diploid and sexual B. ruziziensis and the fact that this species is cross-compatible with B. brizantha and B. decumbens, in Bra-zil the 2 most important species for tropical pastures. Crossings between species have been carried out at Embrapa Beef Cattle, Campo Grande, MS, Brazil, since 1988 (Valle et al. 1993, 2001; Valle 1997; Resende et al. 2007). The initial success in obtaining interspecific hy-brids in Brachiaria is indisputable and helped establish a practical methodology as well as allowed for the identi-fication of apomictic parents with good combining abil-ity. However, a comprehensive genetic improvement strategy to benefit from gains in quantitative characteris-tics associated with the majority of agronomic traits of economic interest in these species had not been started. Therefore, 3 methodologies are being used for this pur-pose: reciprocal recurrent selection; intra-population recurrent selection; and directed crosses between sexual and apomictic plants. The last 2 strategies are already underway and the strategies for agronomic evaluations are reported here.
650 $aApomixis
650 $aInterspecific hybridization
650 $aTropical pastures
650 $aBrachiaria
650 $aProdutividade
700 1 $aFIGUEIREDO, U. J. de
700 1 $aPANDOLFI FILHO, A. D.
700 1 $aBARRIOS, S. C. L.
700 1 $aVALLE, C. B. do
773 $tTropical Grassland - Forrajes Tropicales$gv. 2, p. 1-3, 2014.
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Esconder MarcMostrar Marc Completo |
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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| Registros recuperados : 148 | |
| 23. |  | FALCÃO, D. B.; MENDONÇA, S. A.; BARRIOS, S. C. L.; VALLE, C. B. do. Determinação da herança da apomixia em Brachiaria decumbens. In: INTERNATIONAL SYMPOSIUM ON FORAGE BREEDING, 3., 2011, Bonito, MS. Breeding forage for climate change adaptation and mitigation - eco-efficient animal produtction: proceedings. [Campo Grande, MS: Embrapa Gado de Corte], 2011. 68-71| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 25. | | ASSIS, T. E.; BARRIOS, S. C. L.; VALLE, C. B. do; JANK, L.; SANTOS, M. F. Distinguibilidade de cultivares de Brachiaria para características vegetativas e reprodutivas. In: WORKSHOP MELHORAMENTO VEGETAL: CONTRIBUIÇÕES, AVANÇOS E PERSPECTIVAS PARA O CERRADO BRASILEIRO, 2., 2016. Anais... Campo Grande, MS: SBMP, 2016. Publicado também na 12ª Jornada Científica da Embrapa Gado de Corte.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 26. | | ALVES, G. F.; MATEUS, R. G.; BARRIOS, S. C. L.; VALLE, C. B. do. Distinguibilidade e Homogeneidade de Cultivares do gênero Brachiaria. In: INTERNATIONAL SYMPOSIUM ON FORAGE BREEDING, 3., 2011, Bonito, MS. Breeding forage for climate change adaptation and mitigation - eco-efficient animal produtction: proceedings. [Campo Grande, MS: Embrapa Gado de Corte], 2011. 100-103 1 CD-ROM| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 30. | | JANK, L.; SANTOS, M. F.; VALLE, C. B. do; BARRIOS, S. C. L.; SIMEÃO, R. M. Forage Genetic Resources in Brazil. In: INTERNATIONAL GRASSLAND CONGRESS, 24., INTERNATIONAL RANGELAND CONGRESS, 11., 2020, Kenya. Sustainable use of grassland and rangeland resources for improved livelihoods. Proceedings... Kenya: Kenya Agricultural and Livestock Research Organization, 2021.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 31. | | NUNES, J, A. R.; FIGUEIREDO, U. J.; VALLE, C. B. do; BARRIOS, S. C. L. Structure of the residual covariance matrix and implications on the selection of Brachiaria humidicola progenies. In: INTERNATIONAL SYMPOSIUM OF FORAGE BREEDING, 5., 2015, Buenos Aires, Argentina. Anais... Buenos Aires:[s.n.], 2015. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 32. | | CHIARI, L.; SANTOS, B. F.; SALGADO, L. R.; VALLE, C. B. do; BARRIOS, S. C. L. Transcriptional profile analysis of genes responsive to toxic aluminum in roots of signalgrass. In: INTERNATIONAL SYMPOSIUM OF FORAGE BREEDINGS, 5., 2015, Buenos Aires, Argentina. Anais... Faculdade de Agronomia, Universidade de Buenos Aires, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 35. | | MATEUS, R. G.; BARRIOS, S. C. L.; VALLE, C. B. do; FIGUEIREDO, U. J.; AMARAL, P. N. C. Avaliação de híbridos de Brachiaria decumbens quanto ao desempenho agronômico e resistência às cigarrinhas-das-pastagens. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. 2 p. (Embrapa Gado de Corte. Documentos, 198).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 36. | | MENDONÇA, S. A.; VALLE, C. B. do; BARRIOS, S. C. L.; MATEUS, R. G.; MEIRELLES, P. R. L. Avaliação agronômica de híbridos de Brachiaria decumbens. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 7., 2011, CAMPO GRANDE, MS. [Anais da]... Campo Grande, MS: Embrapa Gado de Corte, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 37. | | FARIA, T. A. C.; MARTINS, L. B.; FIGUEIREDO, U. J. DE; BARRIOS, S. C. L.; VALLE, C. B. do. Avaliação de diferentes recipientes e tipos de plantio na produção de mudas de Brachiaria decumbens. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 9., 2013, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2013. (Embrapa Gado de Corte. Documentos, 204). Comissão organizadora: Denise Baptaglin Montagner, Grácia Maria Soares Rosinha, Rodrigo Carvalho Alva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 40. | | OLIVEIRA, K. M. B. de; BARRIOS, S. C. L.; CHIARI, L.; LAURA, V. A.; VALLE, C. B. do (ed.). Evaluation of aluminum resistance in hybrids of Brachiaria decumbens Stapf. Crop Breeding and Applied Biotechnology, Viçosa, v. 15, n. 4, p. 251-257, Oct./Dec. 2015. 7 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 148 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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