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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Gado de Corte; Embrapa Unidades Centrais. |
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Data corrente: |
13/07/2007 |
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Data da última atualização: |
21/10/2009 |
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Autoria: |
KARIA, C. T.; DUARTE, J. B.; ARAÚJO, A. C. G. de. |
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Título: |
Desenvolvimento de cultivares do gênero Brachiaria (trin.) Griseb no Brasil. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2006. |
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Páginas: |
57 p. |
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Série: |
(Embrapa Cerrados. Documentos, 163). |
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Idioma: |
Português |
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Conteúdo: |
In Brazil, cultivated pastures cover more than 100 million hectares and Brachiaria species cover more than 45 million hectares. B. brizantha cv. Marandu and B. decumbens cv. Basilisk are the primary cultivars. The large areas occupied by the same cultivars pose a vulnerability to the beef cattle activity, and make clear how necessary is to increase the genetic diversity of forage cultivars. Most of Brachiaria species show the apomitic mode of reproduction, with seeds containing an embryo with assexual origin. The apomixis limits the use of the hybridization in the genetic breeding program. However, the induced duplication of the chromosomes of the sexual diploid B. ruziziensis, and the identification of sexual diploid B. brizantha and B. decumbens genotypes enabled the use of intra and interspecific genetic recombination for the improvement of these species. In this review, it is presented a historical briefing about Brachiaria cultivars developed by Embrapa, the description of some aspects on the genetics of Brachiaria, some strategies adopted by this breeding program, and the related researches that have been performed in Brazil. |
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Palavras-Chave: |
Braquiária; Brasil; Feed crops; Feed grasses; Hibridization. |
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Thesagro: |
Apomixia; Brachiaria; Capim Brachiaria; Citogenética Vegetal; Germoplasma; Gramínea Forrageira; Hibridação; Historia; Melhoramento Genético Vegetal; Pastagem; Pesquisa; Planta Forrageira; Reprodução; Variedade. |
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Thesaurus Nal: |
apomixis; Brazil; cytogenetics; germplasm; history; pastures; plant breeding; reproduction; research; varieties. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/27809/1/doc_163.pdf
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Marc: |
LEADER 02436nam a2200505 a 4500
001 1570263
005 2009-10-21
008 2006 bl uuuu 00u1 u #d
100 1 $aKARIA, C. T.
245 $aDesenvolvimento de cultivares do gênero Brachiaria (trin.) Griseb no Brasil.
260 $aPlanaltina, DF: Embrapa Cerrados$c2006
300 $a57 p.
490 $a(Embrapa Cerrados. Documentos, 163).
520 $aIn Brazil, cultivated pastures cover more than 100 million hectares and Brachiaria species cover more than 45 million hectares. B. brizantha cv. Marandu and B. decumbens cv. Basilisk are the primary cultivars. The large areas occupied by the same cultivars pose a vulnerability to the beef cattle activity, and make clear how necessary is to increase the genetic diversity of forage cultivars. Most of Brachiaria species show the apomitic mode of reproduction, with seeds containing an embryo with assexual origin. The apomixis limits the use of the hybridization in the genetic breeding program. However, the induced duplication of the chromosomes of the sexual diploid B. ruziziensis, and the identification of sexual diploid B. brizantha and B. decumbens genotypes enabled the use of intra and interspecific genetic recombination for the improvement of these species. In this review, it is presented a historical briefing about Brachiaria cultivars developed by Embrapa, the description of some aspects on the genetics of Brachiaria, some strategies adopted by this breeding program, and the related researches that have been performed in Brazil.
650 $aapomixis
650 $aBrazil
650 $acytogenetics
650 $agermplasm
650 $ahistory
650 $apastures
650 $aplant breeding
650 $areproduction
650 $aresearch
650 $avarieties
650 $aApomixia
650 $aBrachiaria
650 $aCapim Brachiaria
650 $aCitogenética Vegetal
650 $aGermoplasma
650 $aGramínea Forrageira
650 $aHibridação
650 $aHistoria
650 $aMelhoramento Genético Vegetal
650 $aPastagem
650 $aPesquisa
650 $aPlanta Forrageira
650 $aReprodução
650 $aVariedade
653 $aBraquiária
653 $aBrasil
653 $aFeed crops
653 $aFeed grasses
653 $aHibridization
700 1 $aDUARTE, J. B.
700 1 $aARAÚJO, A. C. G. de
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