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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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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
25/09/1995 |
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Data da última atualização: |
19/01/2024 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
CARDOSO, M. J.; SANTOS, A. A. dos; FREIRE FILHO, F. R. |
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Afiliação: |
MILTON JOSE CARDOSO, CPAMN; ANTONIO APOLIANO DOS SANTOS, CPAMN; FRANCISCO RODRIGUES FREIRE FILHO, CPAMN. |
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Título: |
BR 10 Piaui: nova cultivar de feijao macassar para o Piaui. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Teresina: EMBRAPA-UEPAE de Teresina, 1987. |
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Páginas: |
3 p. |
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Série: |
(EMBRAPA-UEPAE de Teresina. Comunicado Tecnico, 33). |
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Idioma: |
Português |
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Conteúdo: |
No Piaui, o feijao macassar e cultivado praticamente em todo o estado,havendo um grande numero de cultivares locais. Diante disso, considerando que ocorrem varios tipos de virus, o melhoramento varietal visando a obtencao de cultivares com resistencia multipla as virose, com elevado padrao de rendimento e com boa qualidade de semente, assume elevadaimportancia. A cultivar BR 10 PIAUI, apresenta resistencia ao virus domosaico rugoso do caupi, ao virus do mosqueado severo do caupi, e ao virus do mosaico dourado. Reune portanto, em si, as resistencias presentes na cultivares parentais. Alem dessa importante caracteristica essacultivar possui boas caracteristicas agronomicas com vagens e sementesna faixa de preferencia de produtores e consumidores. |
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Palavras-Chave: |
BR 10 Piauí; Brasil; Caupi; Cowpea; Cultivo; Feijao br 10 piaui; Feijao macassar; Piaui; Variedade BR 10; Variety. |
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Thesagro: |
Feijão; Feijão de Corda; Melhoramento; Variedade; Vigna Unguiculata. |
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Thesaurus NAL: |
Brazil. |
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Categoria do assunto: |
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A Sistemas de Cultivo
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/83568/1/CT330001.pdf
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Marc: |
LEADER 01653nam a2200349 a 4500
001 1050364
005 2024-01-19
008 1987 bl uuuu u0uu1 u #d
100 1 $aCARDOSO, M. J.
245 $aBR 10 Piaui$bnova cultivar de feijao macassar para o Piaui.
260 $aTeresina: EMBRAPA-UEPAE de Teresina$c1987
300 $a3 p.
490 $a(EMBRAPA-UEPAE de Teresina. Comunicado Tecnico, 33).
520 $aNo Piaui, o feijao macassar e cultivado praticamente em todo o estado,havendo um grande numero de cultivares locais. Diante disso, considerando que ocorrem varios tipos de virus, o melhoramento varietal visando a obtencao de cultivares com resistencia multipla as virose, com elevado padrao de rendimento e com boa qualidade de semente, assume elevadaimportancia. A cultivar BR 10 PIAUI, apresenta resistencia ao virus domosaico rugoso do caupi, ao virus do mosqueado severo do caupi, e ao virus do mosaico dourado. Reune portanto, em si, as resistencias presentes na cultivares parentais. Alem dessa importante caracteristica essacultivar possui boas caracteristicas agronomicas com vagens e sementesna faixa de preferencia de produtores e consumidores.
650 $aBrazil
650 $aFeijão
650 $aFeijão de Corda
650 $aMelhoramento
650 $aVariedade
650 $aVigna Unguiculata
653 $aBR 10 Piauí
653 $aBrasil
653 $aCaupi
653 $aCowpea
653 $aCultivo
653 $aFeijao br 10 piaui
653 $aFeijao macassar
653 $aPiaui
653 $aVariedade BR 10
653 $aVariety
700 1 $aSANTOS, A. A. dos
700 1 $aFREIRE FILHO, F. R.
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Embrapa Meio-Norte (CPAMN) |
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