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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Cerrados; Embrapa Gado de Corte; Embrapa Unidades Centrais. |
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Data corrente: |
08/05/2000 |
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Data da última atualização: |
15/05/2014 |
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Autoria: |
SANO, E. E.; BEZERRA, H. S. |
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Título: |
Pastagens cultivadas e nativas no cerrado brasileiro: calculo de area. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Planaltina: Embrapa Cerrados, 1999. |
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Páginas: |
2p. |
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Série: |
(Embrapa Cerrados. Pesquisa em Andamento, 16). |
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Idioma: |
Português |
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Palavras-Chave: |
Brasil; Natural pastures; Pasture. |
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Thesagro: |
Cerrado; Pastagem; Pastagem Cultivada; Pastagem Nativa. |
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Thesaurus Nal: |
area; savannas; sown pastures. |
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Categoria do assunto: |
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URL: |
https://bbeletronica.cpac.embrapa.br/versaomodelo/html/1999/pesq/pesq_16.shtml
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Marc: |
LEADER 00674nam a2200253 a 4500
001 1546154
005 2014-05-15
008 1999 bl uuuu u0uu1 u #d
100 1 $aSANO, E. E.
245 $aPastagens cultivadas e nativas no cerrado brasileiro$bcalculo de area.
260 $aPlanaltina: Embrapa Cerrados$c1999
300 $a2p.
490 $a(Embrapa Cerrados. Pesquisa em Andamento, 16).
650 $aarea
650 $asavannas
650 $asown pastures
650 $aCerrado
650 $aPastagem
650 $aPastagem Cultivada
650 $aPastagem Nativa
653 $aBrasil
653 $aNatural pastures
653 $aPasture
700 1 $aBEZERRA, H. S.
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Registro original: |
Embrapa Cerrados (CPAC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/09/2002 |
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Data da última atualização: |
03/08/2017 |
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Autoria: |
HUNGRIA, M; CHUEIRE, L. M de O.; COCA, R. G.; MEGIAS, M. |
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Título: |
Preliminary characterization of fast growing rhizobial strains isolated from soyabean nodules in Brazil. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Soil Biology & Biochemistry, Oxford, v. 33, n. 10, p. 1349-1361, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
A survey of soyabean (Glycine max) rhizobia was carried out with six Asian and one modern soyabean genotypes as trap hosts. Soyabean seedlings were inoculated with soils from 22 Brazilian field sites, including undisturbed areas or areas traditionally cropped with this legume. A total of 30 fast growing strains, able to establish an effective symbiosis with both types of genotypes, were isolated from 12 of the 22 soils, representing 17% of the population in cropped areas and 24% in undisturbed soils. The bacterial mean generation time varied from 85 to 225 minutes and after 4 days of growth in YM medium the final pH ranged from 3.7 to 6.9. Although isolated from acid soils, only 37% of the strains were able to growing in TY or YM media at pH 4.0, while 60% were alkaline tolerant (pH 9.5). Most strains produced abundant extracellular polysaccharides (73%), were tolerant to 0.5 M NaCl (60%) and a temperature of 40°C (77%), grew in LB medium (67%) and synthesized melanin (53%). The strains differed in the use of C compounds supplied as sole C sources. The majority of the strains showed an intrinsic resistance to the antibiotics (µg ml-1) chloramphenicol (10), erythromycin (50), gentamicin (20), kanamycin (30), rifampicin (20) and tetracycline (10) and to the heavy metals cobalt chloride (0.5 mM) and potassium chromate (0.25 mM). A cluster analysis with 81 morphological and physiological parameters placed the strains from undisturbed soils in the central part of the dendrogram, even when isolated from distant areas, indicating that they had a common background. The relatedness decreased with the use of the soils for agriculture. Most of the strains isolated from cropped soils under conventional tillage were characterized by a high tolerance to stressful conditions and the ability to grow with several C sources, contrary to most of the strains isolated from soils under no-tillage management system. The strains differed from Sinorhizobium fredii in several characteristics and the protein and lipopolysaccharide profiles showed that each strain was unique. Therefore, although soyabean is an exotic plant in Brazil, several indigenous rhizobial strains may also establish an effective symbiosis with this legume. MenosA survey of soyabean (Glycine max) rhizobia was carried out with six Asian and one modern soyabean genotypes as trap hosts. Soyabean seedlings were inoculated with soils from 22 Brazilian field sites, including undisturbed areas or areas traditionally cropped with this legume. A total of 30 fast growing strains, able to establish an effective symbiosis with both types of genotypes, were isolated from 12 of the 22 soils, representing 17% of the population in cropped areas and 24% in undisturbed soils. The bacterial mean generation time varied from 85 to 225 minutes and after 4 days of growth in YM medium the final pH ranged from 3.7 to 6.9. Although isolated from acid soils, only 37% of the strains were able to growing in TY or YM media at pH 4.0, while 60% were alkaline tolerant (pH 9.5). Most strains produced abundant extracellular polysaccharides (73%), were tolerant to 0.5 M NaCl (60%) and a temperature of 40°C (77%), grew in LB medium (67%) and synthesized melanin (53%). The strains differed in the use of C compounds supplied as sole C sources. The majority of the strains showed an intrinsic resistance to the antibiotics (µg ml-1) chloramphenicol (10), erythromycin (50), gentamicin (20), kanamycin (30), rifampicin (20) and tetracycline (10) and to the heavy metals cobalt chloride (0.5 mM) and potassium chromate (0.25 mM). A cluster analysis with 81 morphological and physiological parameters placed the strains from undisturbed soils in the central part of the dendrogram, ... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
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Marc: |
LEADER 02749naa a2200169 a 4500
001 1462873
005 2017-08-03
008 2001 bl --- 0-- u #d
100 1 $aHUNGRIA, M
245 $aPreliminary characterization of fast growing rhizobial strains isolated from soyabean nodules in Brazil.
260 $c2001
520 $aA survey of soyabean (Glycine max) rhizobia was carried out with six Asian and one modern soyabean genotypes as trap hosts. Soyabean seedlings were inoculated with soils from 22 Brazilian field sites, including undisturbed areas or areas traditionally cropped with this legume. A total of 30 fast growing strains, able to establish an effective symbiosis with both types of genotypes, were isolated from 12 of the 22 soils, representing 17% of the population in cropped areas and 24% in undisturbed soils. The bacterial mean generation time varied from 85 to 225 minutes and after 4 days of growth in YM medium the final pH ranged from 3.7 to 6.9. Although isolated from acid soils, only 37% of the strains were able to growing in TY or YM media at pH 4.0, while 60% were alkaline tolerant (pH 9.5). Most strains produced abundant extracellular polysaccharides (73%), were tolerant to 0.5 M NaCl (60%) and a temperature of 40°C (77%), grew in LB medium (67%) and synthesized melanin (53%). The strains differed in the use of C compounds supplied as sole C sources. The majority of the strains showed an intrinsic resistance to the antibiotics (µg ml-1) chloramphenicol (10), erythromycin (50), gentamicin (20), kanamycin (30), rifampicin (20) and tetracycline (10) and to the heavy metals cobalt chloride (0.5 mM) and potassium chromate (0.25 mM). A cluster analysis with 81 morphological and physiological parameters placed the strains from undisturbed soils in the central part of the dendrogram, even when isolated from distant areas, indicating that they had a common background. The relatedness decreased with the use of the soils for agriculture. Most of the strains isolated from cropped soils under conventional tillage were characterized by a high tolerance to stressful conditions and the ability to grow with several C sources, contrary to most of the strains isolated from soils under no-tillage management system. The strains differed from Sinorhizobium fredii in several characteristics and the protein and lipopolysaccharide profiles showed that each strain was unique. Therefore, although soyabean is an exotic plant in Brazil, several indigenous rhizobial strains may also establish an effective symbiosis with this legume.
650 $aSoja
700 1 $aCHUEIRE, L. M de O.
700 1 $aCOCA, R. G.
700 1 $aMEGIAS, M.
773 $tSoil Biology & Biochemistry, Oxford$gv. 33, n. 10, p. 1349-1361, 2001.
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Embrapa Soja (CNPSO) |
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