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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
17/01/2008 |
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Data da última atualização: |
19/03/2008 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
LÉDO, A. da S.; SILVA JÚNIOR, J. F. da; BARBOZA, S. B. S. C. |
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Afiliação: |
Ana da Silva Lédo, Embrapa Tabuleiros Costeiros; Josué Francisco da Silva Júnior, Embrapa Tabuleiros Costeiros; Sarah Brandão Santa Cruz Barboza, DEAGRO/Embrapa Tabuleiros Costeiros. |
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Título: |
Germinação in vitro da mangabeira. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Aracaju: Embrapa Tabuleiros Costeiros, 2007. |
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Páginas: |
16 p. |
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Série: |
(Embrapa Tabuleiros Costeiros. Boletim de Pesquisa e Desenvolvimento, 24). |
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Idioma: |
Português |
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Conteúdo: |
O objetivo do trabalho foi determinar as condições mais favoráveis para germinação in vitro de sementes inicial de plântulas de mangabeira. |
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Thesagro: |
Genética; Mangaba. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATC/19572/1/bp-24.pdf
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Marc: |
LEADER 00669nam a2200181 a 4500
001 1372214
005 2008-03-19
008 2007 bl uuuu u0uu1 u #d
100 1 $aLÉDO, A. da S.
245 $aGerminação in vitro da mangabeira.
260 $aAracaju: Embrapa Tabuleiros Costeiros$c2007
300 $a16 p.
490 $a(Embrapa Tabuleiros Costeiros. Boletim de Pesquisa e Desenvolvimento, 24).
520 $aO objetivo do trabalho foi determinar as condições mais favoráveis para germinação in vitro de sementes inicial de plântulas de mangabeira.
650 $aGenética
650 $aMangaba
700 1 $aSILVA JÚNIOR, J. F. da
700 1 $aBARBOZA, S. B. S. C.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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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: |
09/12/2005 |
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Data da última atualização: |
13/01/2006 |
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Autoria: |
BROWN, G. G.; HUNGRIA, M.; FRANCHINI, J. C.; SOUZA, R. A.; KASCHUK, G.; BRANDÃO JUNIOR, O.; PERIERA, A. A.; BRUSSAARD, L.; GOEDE, R. G. M. de; TORRES, E. |
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Título: |
Conservation agriculture: making biodiversity work for integrated crop and soil management. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: DIVERSITAS: OSC, 1., 2005, Oaxaca. Integrating biodiversity science for human well-being: abstracts. Oaxaca: Diversitas, 2005. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
Seção Symposium 9. |
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Conteúdo: |
Soil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage selected for resistant organisms, and in its absence a more diverse, yet more "fragile" assemblage was able to persist, performing a larger number of functions. The results obtained emphasize the benefits of NT and crop rotation with legumes, but also indicate a poor understanding of the complex relationship between soil biodiversity and sustainability and the challenges to adequately evaluate and monitor soil quality. MenosSoil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage select... Mostrar Tudo |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02699naa a2200253 a 4500
001 1468621
005 2006-01-13
008 2005 bl uuuu u00u1 u #d
100 1 $aBROWN, G. G.
245 $aConservation agriculture$bmaking biodiversity work for integrated crop and soil management.
260 $c2005
300 $c1 CD-ROM.
500 $aSeção Symposium 9.
520 $aSoil microorganisms and animals are an essential part of agrobiodiversity and perform functions vital for agricultural productivity and sustainability. Their activity and biodiversity may be useful indicators of soil quality, ecosystem disturbance and the integrity of ecosystem functioning. Conservation agriculture and the adoption of no-tillage (NT) in the tropics is finally reversing physical, chemical, and biological soil degradation; in Brazil, 19 M ha are now devoted to NT. To evaluate the effect of different management practices on below-ground biodiversity, we monitored several long-term field trials in southern Brazil, including 2-25 yr NT and crop rotations based on soybean (Glycine max) or common bean (Phaseolus vulgaris). C- and N-microbial biomass and metabolic microbial efficiency were always higher in NT than in conventional tillage (CT) systems and were enhanced by legumes in the rotation. Bacterial and fungal genetic diversity, evaluated by the DGGE analysis, were also higher under both NT and rotation systems including legumes. Diversity of rhizobial strains (assessed by PCR-RFLP) was also higher under NT, although species diversity was not always higher. The environmental stability offered by the NT system may decrease total species diversity, but simultaneously increase genetic diversity within each species. Soil macrofauna diversity was higher in NT (16-18 orders) than in CT (12-13 orders), while rotations seemed to have a secondary effect. Tillage selected for resistant organisms, and in its absence a more diverse, yet more "fragile" assemblage was able to persist, performing a larger number of functions. The results obtained emphasize the benefits of NT and crop rotation with legumes, but also indicate a poor understanding of the complex relationship between soil biodiversity and sustainability and the challenges to adequately evaluate and monitor soil quality.
700 1 $aHUNGRIA, M.
700 1 $aFRANCHINI, J. C.
700 1 $aSOUZA, R. A.
700 1 $aKASCHUK, G.
700 1 $aBRANDÃO JUNIOR, O.
700 1 $aPERIERA, A. A.
700 1 $aBRUSSAARD, L.
700 1 $aGOEDE, R. G. M. de
700 1 $aTORRES, E.
773 $tIn: DIVERSITAS: OSC, 1., 2005, Oaxaca. Integrating biodiversity science for human well-being: abstracts. Oaxaca: Diversitas, 2005.
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