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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
10/12/2004 |
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Data da última atualização: |
28/10/2009 |
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Autoria: |
REIS JÚNIOR, F. B. dos; TEIXEIRA, K. R. dos S.; URQUIAGA, S.; REIS, V. M. |
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Título: |
Associação de bactérias promotoras de crescimento de plantas do gênero Azospirillum com diferentes espécies de brachiaria. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2003. |
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Páginas: |
52 p. |
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Série: |
(Embrapa Cerrados. Documentos, 81). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: The limitation of nitrogen is considered one of the most important factors to the pastures degradation. However there are evidences that pastures formed by some species of the genus Brachiaria could be benefit with the biological nitrogen fixation process (BNF), guaranteeing to these pastures higher longevity. The diazotrophic bacteria founded in association with these forage grasses were mainly species from the Azospirillum genus. The associations between these microrganisms and the plants are generally conditioned to the vegetation, therefore is possible that different genotypes of Brachiaria exercise a selective efffect on the populations of these, what could result in different BNF contributions. It was objectified to establish the influence of the Brachiaria species, pasture management and seasonal variations on the bacteria populations from the Azospirillum genus associated with the roots of these plants. Different pastures (B.humidicola, B. decumbens and B. brizantha) were implanted in areas of the Cerrado ecosystem and of the Atlantic Forest. Two management systems with different stocking rates (higher and lower) were evaluated. The collects of plant samples from each experimental treatment were accomplished in different times of the year. For the isolation and qualification of the diazotrophic bacteria traditional techniques were utilised with the use of semi-specific and semi-solid culture media without nitrogen. A. lipoferum, A. brasiliense and A. amazonense were isolated from root samples of the three analysed Brachiaria species. The estimates of the bacterial populations from these species varied from 10(elevado a 3) - 10 (elevado a 7) cells. g. of roots. In the samples of the Cerrado ecosystem, the collect time presented significant effects on the population of these bacteria. The data from the Atlantic forest region experiment showed that plants of Brachiaria from different species and pastures under different stocking rates can present different populations numbers of Azospirillum spp. associated to its roots. MenosABSTRACT: The limitation of nitrogen is considered one of the most important factors to the pastures degradation. However there are evidences that pastures formed by some species of the genus Brachiaria could be benefit with the biological nitrogen fixation process (BNF), guaranteeing to these pastures higher longevity. The diazotrophic bacteria founded in association with these forage grasses were mainly species from the Azospirillum genus. The associations between these microrganisms and the plants are generally conditioned to the vegetation, therefore is possible that different genotypes of Brachiaria exercise a selective efffect on the populations of these, what could result in different BNF contributions. It was objectified to establish the influence of the Brachiaria species, pasture management and seasonal variations on the bacteria populations from the Azospirillum genus associated with the roots of these plants. Different pastures (B.humidicola, B. decumbens and B. brizantha) were implanted in areas of the Cerrado ecosystem and of the Atlantic Forest. Two management systems with different stocking rates (higher and lower) were evaluated. The collects of plant samples from each experimental treatment were accomplished in different times of the year. For the isolation and qualification of the diazotrophic bacteria traditional techniques were utilised with the use of semi-specific and semi-solid culture media without nitrogen. A. lipoferum, A. brasiliense and A. amazon... Mostrar Tudo |
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Palavras-Chave: |
Degredação. |
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Thesagro: |
Bactéria; Brachiaria; Fixação de Nitrogênio; Microbiologia do Solo; Pastagem. |
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Thesaurus Nal: |
Azospirillum amazonense; degradation; microbiology; nitrogen fixation; pastures; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/25011/1/doc_81.pdf
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Marc: |
LEADER 02982nam a2200313 a 4500
001 1567997
005 2009-10-28
008 2003 bl uuuu 00u1 u #d
100 1 $aREIS JÚNIOR, F. B. dos
245 $aAssociação de bactérias promotoras de crescimento de plantas do gênero Azospirillum com diferentes espécies de brachiaria.
260 $aPlanaltina, DF: Embrapa Cerrados$c2003
300 $a52 p.
490 $a(Embrapa Cerrados. Documentos, 81).
520 $aABSTRACT: The limitation of nitrogen is considered one of the most important factors to the pastures degradation. However there are evidences that pastures formed by some species of the genus Brachiaria could be benefit with the biological nitrogen fixation process (BNF), guaranteeing to these pastures higher longevity. The diazotrophic bacteria founded in association with these forage grasses were mainly species from the Azospirillum genus. The associations between these microrganisms and the plants are generally conditioned to the vegetation, therefore is possible that different genotypes of Brachiaria exercise a selective efffect on the populations of these, what could result in different BNF contributions. It was objectified to establish the influence of the Brachiaria species, pasture management and seasonal variations on the bacteria populations from the Azospirillum genus associated with the roots of these plants. Different pastures (B.humidicola, B. decumbens and B. brizantha) were implanted in areas of the Cerrado ecosystem and of the Atlantic Forest. Two management systems with different stocking rates (higher and lower) were evaluated. The collects of plant samples from each experimental treatment were accomplished in different times of the year. For the isolation and qualification of the diazotrophic bacteria traditional techniques were utilised with the use of semi-specific and semi-solid culture media without nitrogen. A. lipoferum, A. brasiliense and A. amazonense were isolated from root samples of the three analysed Brachiaria species. The estimates of the bacterial populations from these species varied from 10(elevado a 3) - 10 (elevado a 7) cells. g. of roots. In the samples of the Cerrado ecosystem, the collect time presented significant effects on the population of these bacteria. The data from the Atlantic forest region experiment showed that plants of Brachiaria from different species and pastures under different stocking rates can present different populations numbers of Azospirillum spp. associated to its roots.
650 $aAzospirillum amazonense
650 $adegradation
650 $amicrobiology
650 $anitrogen fixation
650 $apastures
650 $asoil
650 $aBactéria
650 $aBrachiaria
650 $aFixação de Nitrogênio
650 $aMicrobiologia do Solo
650 $aPastagem
653 $aDegredação
700 1 $aTEIXEIRA, K. R. dos S.
700 1 $aURQUIAGA, S.
700 1 $aREIS, V. M.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
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Classificação |
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Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
01/12/2015 |
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Data da última atualização: |
13/11/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SANTOS, R. S.; MARTINELLI, P. R. P.; MÚSCARI, A. M. |
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Afiliação: |
RODRIGO SOUZA SANTOS, CPAF-AC; Paulo Roberto Pala Martinelli, Instituto Taquaritinguense de Ensino Superior (ITES); André Maurício Múscari, Faculdade de Ciências Agrárias e Veterinárias (FCAV/UNESP). |
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Título: |
Nematoides associados a cinco fruteiras no estado do Amapá, Brasil. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 24., 2015, Rio Branco. Anais... Rio Branco: CNPq: Ufac: Embrapa: FAPAC: Ieval, 2015. |
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Idioma: |
Português |
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Conteúdo: |
As plantas de murici (Byrsonima sp.), graviola (Annona muricata), cupuaçu (Theobroma grandiflorum), maracujá (Passiflora edulis) e pupunha (Bactris gasipaes) são culturas importantes para a alimentação da população da região norte do país, fazendo parte da culinária regional. Também são comumente utilizadas em consorcio com florestas, ou seja, participando de Sistemas Agroflorestais (SAF), muito cultivados na região de floresta tropical do Brasil. Dentre os problemas fitossanitários associados a essas culturas, os nematoides podem ser citados como um dos principais problemas, responsáveis por prejuízos na ordem de 30% da produção mundial. |
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Palavras-Chave: |
Amapá; Amazônia Oriental; Byrsonima sp; Fruteira; Oiapoque (AP); Sistema Agroflorestal (SAF). |
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Thesagro: |
Annona Muricata; Bactris Gasipaes; Cupuaçu; Entomologia; Graviola; Maracujá; Murici; Nematóide; Passiflora Edulis; Pupunha; Theobroma Grandiflorum. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134435/1/25812.pdf
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Marc: |
LEADER 01713nam a2200337 a 4500
001 2030109
005 2023-11-13
008 2015 bl uuuu u00u1 u #d
100 1 $aSANTOS, R. S.
245 $aNematoides associados a cinco fruteiras no estado do Amapá, Brasil.$h[electronic resource]
260 $aIn: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 24., 2015, Rio Branco. Anais... Rio Branco: CNPq: Ufac: Embrapa: FAPAC: Ieval$c2015
520 $aAs plantas de murici (Byrsonima sp.), graviola (Annona muricata), cupuaçu (Theobroma grandiflorum), maracujá (Passiflora edulis) e pupunha (Bactris gasipaes) são culturas importantes para a alimentação da população da região norte do país, fazendo parte da culinária regional. Também são comumente utilizadas em consorcio com florestas, ou seja, participando de Sistemas Agroflorestais (SAF), muito cultivados na região de floresta tropical do Brasil. Dentre os problemas fitossanitários associados a essas culturas, os nematoides podem ser citados como um dos principais problemas, responsáveis por prejuízos na ordem de 30% da produção mundial.
650 $aAnnona Muricata
650 $aBactris Gasipaes
650 $aCupuaçu
650 $aEntomologia
650 $aGraviola
650 $aMaracujá
650 $aMurici
650 $aNematóide
650 $aPassiflora Edulis
650 $aPupunha
650 $aTheobroma Grandiflorum
653 $aAmapá
653 $aAmazônia Oriental
653 $aByrsonima sp
653 $aFruteira
653 $aOiapoque (AP)
653 $aSistema Agroflorestal (SAF)
700 1 $aMARTINELLI, P. R. P.
700 1 $aMÚSCARI, A. M.
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Embrapa Acre (CPAF-AC) |
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