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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
29/04/2003 |
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Data da última atualização: |
29/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BALBINO, L. C.; BRUAND, A.; BROSSARD, M.; GRIMALDI, M.; HAJNOS, M.; GUIMARAES, M. F. |
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Afiliação: |
LUIZ CARLOS BALBINO, CNPAF. |
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Título: |
Changes in porosity and microaggregation in clayey Ferralsols of the Brazilian Cerrado on clearing for pasture. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
European Journal of Soil Science, v. 53, n. 2, p. 219-230, June 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Ferrasols have a macrostructure that is weak to moderate and a strong microstructure consisting of near spherical microaggregates. We have studied the evolution of the structure under changing land use in two Ferralsols under a native Cerrado and under pasture after recent clearing by measuring bulk density. We studied the microaggregates characteristics and resulting porosity using scanning electron microscopy and mercury porosimetry, respectively. Microaggregates 50-300 um in diameter are attributed to termites. They were in a much closer arrangement from the surface to 1 m depth under pasture than under Cerrado. Larger microaggregates, 500-1000 um in diameter, that are closely packed, resulted from earthworm activity. They were more numerous under pasture than under Cerrado. Thus within a few years, clearing and grazing have caused a dramatic decrease in microstructure that is one of the rare favourable characteristics of Ferralsols of agriculture. This evolution that affects the subsoil to 80-90 cm cannot be attributed to compaction by mechanical deforestation alone but seems to result from a change in the faunal activity in the faunal activity in the soil. Finally, the packing of the clay particles within the microaggregates was similar whatever the type microaggregate and land use. Our results accord with ealier studies showing that the porosity resulting from clay packing varies little in Ferralsols in which the fine material is mainly kaolinite. |
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Palavras-Chave: |
Densidade; Pasto; Pasture. |
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Thesagro: |
Cerrado; Pastagem; Solo. |
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Thesaurus Nal: |
Ferralsols. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02219naa a2200265 a 4500
001 1210819
005 2022-04-29
008 2002 bl uuuu u00u1 u #d
100 1 $aBALBINO, L. C.
245 $aChanges in porosity and microaggregation in clayey Ferralsols of the Brazilian Cerrado on clearing for pasture.$h[electronic resource]
260 $c2002
520 $aFerrasols have a macrostructure that is weak to moderate and a strong microstructure consisting of near spherical microaggregates. We have studied the evolution of the structure under changing land use in two Ferralsols under a native Cerrado and under pasture after recent clearing by measuring bulk density. We studied the microaggregates characteristics and resulting porosity using scanning electron microscopy and mercury porosimetry, respectively. Microaggregates 50-300 um in diameter are attributed to termites. They were in a much closer arrangement from the surface to 1 m depth under pasture than under Cerrado. Larger microaggregates, 500-1000 um in diameter, that are closely packed, resulted from earthworm activity. They were more numerous under pasture than under Cerrado. Thus within a few years, clearing and grazing have caused a dramatic decrease in microstructure that is one of the rare favourable characteristics of Ferralsols of agriculture. This evolution that affects the subsoil to 80-90 cm cannot be attributed to compaction by mechanical deforestation alone but seems to result from a change in the faunal activity in the faunal activity in the soil. Finally, the packing of the clay particles within the microaggregates was similar whatever the type microaggregate and land use. Our results accord with ealier studies showing that the porosity resulting from clay packing varies little in Ferralsols in which the fine material is mainly kaolinite.
650 $aFerralsols
650 $aCerrado
650 $aPastagem
650 $aSolo
653 $aDensidade
653 $aPasto
653 $aPasture
700 1 $aBRUAND, A.
700 1 $aBROSSARD, M.
700 1 $aGRIMALDI, M.
700 1 $aHAJNOS, M.
700 1 $aGUIMARAES, M. F.
773 $tEuropean Journal of Soil Science$gv. 53, n. 2, p. 219-230, June 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre; Embrapa Mandioca e Fruticultura; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
08/01/2013 |
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Data da última atualização: |
06/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
PASSOS, M. A. N.; CRUZ, V. de O.; EMEDIATO, F. L.; TEIXEIRA, C. de C.; SOUZA JUNIOR, M. T.; MATSUMOTO, T.; AZEVEDO, V. C. R.; FERREIRA, C. F.; AMORIM, E. P.; FIGUEIREDO, L. F. de A.; MARTINS, N. F.; CAVALCANTE, M. de J. B.; BAURENS, F. C.; SILVA JUNIOR, O. B. da; PAPPAS JUNIOR, G. J.; PIGNOLET, L.; ABADIE, C.; CIAMPI, A. Y.; PIFFANELLI, P.; MILLER, R. N. G. |
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Afiliação: |
Marco A. N. Passos, Universidade de Brasília (UnB); Viviane de Oliveira Cruz, Universidade de Brasília (UnB); Flavia L. Emediato, Universidade de Brasília (UnB); Cristiane de Camargo Teixeira, Universidade Católica de Brasília; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE; Takashi Matsumoto, National Institute of Agrobiological Resources; VANIA CRISTINA RENNO AZEVEDO, Cenargen; CLAUDIA FORTES FERREIRA, CNPMF; EDSON PERITO AMORIM, CNPMF; Lucio Flavio de Alencar Figueiredo, Universidade de Brasília (UnB); NATALIA FLORENCIO MARTINS, CENARGEN; MARIA DE JESUS BARBOSA CAVALCANTE, CPAF-AC; Franc-Christophe Baurens, CIRAD/UMR; ORZENIL BONFIM DA SILVA JUNIOR, CENARGEN; GEORGIOS JOANNIS PAPPAS JUNIOR, CENARGEN; Luc Pignolet, CIRAD/UMR; Catherine Abadie, CIRAD/UMR; Ana Y. Ciampi, Embrapa Recursos Genéticos e Biotecnologia; Pietro Piffanelli, CIRAD/UMR; Robert N. G. Miller, Universidade de Brasília (UnB). |
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Título: |
Development of expressed sequence tag and expressed sequence tag-simple sequence repeat marker resources for Musa acuminata. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
AoB Plants, 2012. |
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DOI: |
doi: 10.1093/aobpla/pls030 |
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Idioma: |
Inglês |
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Conteúdo: |
Banana (Musa acuminata) is a crop contributing to global food security. Many varieties lack resistance to biotic stresses, due to sterility and narrow genetic background. The objective of this study was to develop an expressed sequence tag (EST) database of transcripts expressed during compatible and incompatible banana-Mycosphaerella fijiensis (Mf) interactions. Black leaf streak disease (BLSD), caused by Mf, is a destructive disease of banana. Microsatellite markers were developed as a resource for crop improvement. |
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Palavras-Chave: |
Bananos; Enfermedades y desórdenes de las plantas; Firomejoramiento; Marcador microssatélite; Marcadores genéticos; Plant breedind; Repeticiones de microsatélite. |
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Thesagro: |
Banana; Doença de planta; Fungo; Marcador genético; Melhoramento genético vegetal; Melhoramento vegetal; Musa Acuminata; Mycosphaerella fijiensis; Plátano; Sigatoka negra; Variedade resistente. |
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Thesaurus NAL: |
Bananas; Black sigatoka; Fungi; Genetic markers; Microsatellite repeats; Plant diseases and disorders. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/79671/1/Development-expressed-sequence.pdf
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Marc: |
LEADER 02418naa a2200649 a 4500
001 1953929
005 2021-07-06
008 2012 bl uuuu u00u1 u #d
024 7 $adoi: 10.1093/aobpla/pls030$2DOI
100 1 $aPASSOS, M. A. N.
245 $aDevelopment of expressed sequence tag and expressed sequence tag-simple sequence repeat marker resources for Musa acuminata.$h[electronic resource]
260 $c2012
520 $aBanana (Musa acuminata) is a crop contributing to global food security. Many varieties lack resistance to biotic stresses, due to sterility and narrow genetic background. The objective of this study was to develop an expressed sequence tag (EST) database of transcripts expressed during compatible and incompatible banana-Mycosphaerella fijiensis (Mf) interactions. Black leaf streak disease (BLSD), caused by Mf, is a destructive disease of banana. Microsatellite markers were developed as a resource for crop improvement.
650 $aBananas
650 $aBlack sigatoka
650 $aFungi
650 $aGenetic markers
650 $aMicrosatellite repeats
650 $aPlant diseases and disorders
650 $aBanana
650 $aDoença de planta
650 $aFungo
650 $aMarcador genético
650 $aMelhoramento genético vegetal
650 $aMelhoramento vegetal
650 $aMusa Acuminata
650 $aMycosphaerella fijiensis
650 $aPlátano
650 $aSigatoka negra
650 $aVariedade resistente
653 $aBananos
653 $aEnfermedades y desórdenes de las plantas
653 $aFiromejoramiento
653 $aMarcador microssatélite
653 $aMarcadores genéticos
653 $aPlant breedind
653 $aRepeticiones de microsatélite
700 1 $aCRUZ, V. de O.
700 1 $aEMEDIATO, F. L.
700 1 $aTEIXEIRA, C. de C.
700 1 $aSOUZA JUNIOR, M. T.
700 1 $aMATSUMOTO, T.
700 1 $aAZEVEDO, V. C. R.
700 1 $aFERREIRA, C. F.
700 1 $aAMORIM, E. P.
700 1 $aFIGUEIREDO, L. F. de A.
700 1 $aMARTINS, N. F.
700 1 $aCAVALCANTE, M. de J. B.
700 1 $aBAURENS, F. C.
700 1 $aSILVA JUNIOR, O. B. da
700 1 $aPAPPAS JUNIOR, G. J.
700 1 $aPIGNOLET, L.
700 1 $aABADIE, C.
700 1 $aCIAMPI, A. Y.
700 1 $aPIFFANELLI, P.
700 1 $aMILLER, R. N. G.
773 $tAoB Plants, 2012.
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