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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
20/08/1997 |
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Data da última atualização: |
20/08/1997 |
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Autoria: |
SILVA, M. A. V.; SOARES NETO, J. P.; CUNHA, T. J. F.; ALMEIDA JUNIOR, J. C.; NASCIMENTO NETO, J. G. |
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Título: |
Aptidao climatica para a cultura da mandioca comercial na regiao de barreiras |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Sao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996. |
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Páginas: |
1p. |
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Idioma: |
Português |
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Notas: |
In: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa Resumos... |
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Conteúdo: |
Foi feito um estudo climatico da regiao de Barreiras, considerando as caracteristicas hidricas e termicas, com o objetivo de determinar a aptidao climatica desta para o cultivo da mandioca comercial. O efeito termico baseou-se na temperatura media anual, e o hidrico na deficiencia hidrica anual (DEF) e no indice de umidade efetiva (Im) do balanco climatico de Thornthwaite, empregando-se uma capacidade de retencao maxima de agua no solo de 125mm. Foi constatado que nao ha limitacao termica para o cultivo da mandioca para toda a regiao estudada, portanto, as zonas de aptidao climatica foram determinadas considerando os indices hidricos anuais: DEF e Im. As areas apta, Restritas 1 (DEF>600mm) e Restrita 2 (Im<-20) representaram respectivamente, cerca de 78,8 e 12% da area total da regiao de Barreiras para o cultivo da mandioca comercial. E apresentado um mapa com as regioes Apta e Restrita para a cultura da mandioca. |
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Categoria do assunto: |
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Marc: |
LEADER 01606naa a2200193 a 4500
001 1645022
005 1997-08-20
008 1996 bl uuuu u00u1 u #d
100 1 $aSILVA, M. A. V.
245 $aAptidao climatica para a cultura da mandioca comercial na regiao de barreiras
260 $c1996
300 $a1p.
500 $aIn: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa Resumos...
520 $aFoi feito um estudo climatico da regiao de Barreiras, considerando as caracteristicas hidricas e termicas, com o objetivo de determinar a aptidao climatica desta para o cultivo da mandioca comercial. O efeito termico baseou-se na temperatura media anual, e o hidrico na deficiencia hidrica anual (DEF) e no indice de umidade efetiva (Im) do balanco climatico de Thornthwaite, empregando-se uma capacidade de retencao maxima de agua no solo de 125mm. Foi constatado que nao ha limitacao termica para o cultivo da mandioca para toda a regiao estudada, portanto, as zonas de aptidao climatica foram determinadas considerando os indices hidricos anuais: DEF e Im. As areas apta, Restritas 1 (DEF>600mm) e Restrita 2 (Im<-20) representaram respectivamente, cerca de 78,8 e 12% da area total da regiao de Barreiras para o cultivo da mandioca comercial. E apresentado um mapa com as regioes Apta e Restrita para a cultura da mandioca.
700 1 $aSOARES NETO, J. P.
700 1 $aCUNHA, T. J. F.
700 1 $aALMEIDA JUNIOR, J. C.
700 1 $aNASCIMENTO NETO, J. G.
773 $tSao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
17/02/2011 |
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Data da última atualização: |
20/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FURTADO, G. Q.; MORAES, S. R. G.; ALVES, S. A. M.; AMORIM, L.; MASSOLA JUNIOR, N. S. |
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Afiliação: |
GLEIBER QUINTÃO FURTADO, UFV; SYLVIA RAQUEL GOMES MORAES, ESALQ/USP; SILVIO ANDRE MEIRELLES ALVES, CNPUV; LILIAN AMORIM, UFV; NELSON SIDNEI MASSOLA JUNIOR, UFV. |
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Título: |
The infection of soybean leaves by Phakopsora pachyrhizi during conditions of discontinuous wetness. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Journal of Phytopathology, Berlin, v. 159, n. 3, p. 165-170, mar. 2011. |
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Volume: |
159 |
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Páginas: |
165-170 |
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DOI: |
10.1111/j.1439-0434.2010.01742.x |
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Idioma: |
Inglês |
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Conteúdo: |
The ability of Phakopsora pachyrhizi to cause infection under conditions of discontinuous wetness was investigated. In in vitro experiments, droplets of a uredospore suspension were deposited onto the surface of polystyrene. After an initial wetting period of either 1, 2 or 4 h, the drops were dried for different time intervals and then the wetness was restored for 11, 10 or 8 h. Germination and appressorium formation were evaluated. In in vivo experiments, soybean plants were inoculated with a uredospore suspension. Leaf wetness was interrupted for 1, 3 or 6 h after initial wetting periods of 1, 2 or 4 h. Then, the wetting was re-established for 11, 10 or 8 h, respectively. Rust severity was evaluated 14 days after inoculation. The germination of the spores and the formation of the appressoria on the soybean leaves after different periods of wetness were also quantified in vivo by scanning electron microscopy. P. pachyrhizi showed a high infective capacity during short periods of time. An interruption of wetness after 1 h caused average reductions in germination from 56 to 75% and in appressorium formation from 84 to 96%. Rust severity was lower in all of the in vivo treatments with discontinuous wetness when compared to the control plants. Rust severity was zero when the interruption of wetness occurred 4 h after the initial wetting. Wetting interruptions after 1 and 2 h reduced the average rust severity by 83 and 77%, respectively. The germination of the uredospores on the soybean leaves occurred after 2 h of wetness, with a maximum germination appearing after 4 h of wetness. Wetness interruption affected mainly the spores that had initiated the germination. MenosThe ability of Phakopsora pachyrhizi to cause infection under conditions of discontinuous wetness was investigated. In in vitro experiments, droplets of a uredospore suspension were deposited onto the surface of polystyrene. After an initial wetting period of either 1, 2 or 4 h, the drops were dried for different time intervals and then the wetness was restored for 11, 10 or 8 h. Germination and appressorium formation were evaluated. In in vivo experiments, soybean plants were inoculated with a uredospore suspension. Leaf wetness was interrupted for 1, 3 or 6 h after initial wetting periods of 1, 2 or 4 h. Then, the wetting was re-established for 11, 10 or 8 h, respectively. Rust severity was evaluated 14 days after inoculation. The germination of the spores and the formation of the appressoria on the soybean leaves after different periods of wetness were also quantified in vivo by scanning electron microscopy. P. pachyrhizi showed a high infective capacity during short periods of time. An interruption of wetness after 1 h caused average reductions in germination from 56 to 75% and in appressorium formation from 84 to 96%. Rust severity was lower in all of the in vivo treatments with discontinuous wetness when compared to the control plants. Rust severity was zero when the interruption of wetness occurred 4 h after the initial wetting. Wetting interruptions after 1 and 2 h reduced the average rust severity by 83 and 77%, respectively. The germination of the uredospores on th... Mostrar Tudo |
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Thesagro: |
Doença de planta; Ferrugem; Folha; Fungo; Soja; Umidade. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/27516/1/SILVIO-JPhytopathol-v159p165-2011.pdf
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Marc: |
LEADER 02488naa a2200277 a 4500
001 1877741
005 2019-05-20
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1439-0434.2010.01742.x$2DOI
100 1 $aFURTADO, G. Q.
245 $aThe infection of soybean leaves by Phakopsora pachyrhizi during conditions of discontinuous wetness.$h[electronic resource]
260 $c2011
300 $a165-170 159
490 $v159
520 $aThe ability of Phakopsora pachyrhizi to cause infection under conditions of discontinuous wetness was investigated. In in vitro experiments, droplets of a uredospore suspension were deposited onto the surface of polystyrene. After an initial wetting period of either 1, 2 or 4 h, the drops were dried for different time intervals and then the wetness was restored for 11, 10 or 8 h. Germination and appressorium formation were evaluated. In in vivo experiments, soybean plants were inoculated with a uredospore suspension. Leaf wetness was interrupted for 1, 3 or 6 h after initial wetting periods of 1, 2 or 4 h. Then, the wetting was re-established for 11, 10 or 8 h, respectively. Rust severity was evaluated 14 days after inoculation. The germination of the spores and the formation of the appressoria on the soybean leaves after different periods of wetness were also quantified in vivo by scanning electron microscopy. P. pachyrhizi showed a high infective capacity during short periods of time. An interruption of wetness after 1 h caused average reductions in germination from 56 to 75% and in appressorium formation from 84 to 96%. Rust severity was lower in all of the in vivo treatments with discontinuous wetness when compared to the control plants. Rust severity was zero when the interruption of wetness occurred 4 h after the initial wetting. Wetting interruptions after 1 and 2 h reduced the average rust severity by 83 and 77%, respectively. The germination of the uredospores on the soybean leaves occurred after 2 h of wetness, with a maximum germination appearing after 4 h of wetness. Wetness interruption affected mainly the spores that had initiated the germination.
650 $aDoença de planta
650 $aFerrugem
650 $aFolha
650 $aFungo
650 $aSoja
650 $aUmidade
700 1 $aMORAES, S. R. G.
700 1 $aALVES, S. A. M.
700 1 $aAMORIM, L.
700 1 $aMASSOLA JUNIOR, N. S.
773 $tJournal of Phytopathology, Berlin$gv. 159, n. 3, p. 165-170, mar. 2011.
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