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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
02/05/1996 |
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Data da última atualização: |
02/05/1996 |
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Autoria: |
LEITE, J. A. de O. |
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Título: |
Avaliacao da susceptibilidade de tubogotejadores ao entupimento por precipitados quimicos de carbonato de calcio. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Lavras : UFLA, 1995. |
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Páginas: |
64p. |
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Idioma: |
Português |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
Avaliar a susceptibilidade de cinco modelos de tubogotejadores ao entupimento por precipitados quimicos oriundos de agua de irrigacao contendo altos teores de carbonato de calcio (CaCO3). Determinar as variacoes que ocorrem no coeficiente de variacao de vazao dos emissores ao longo do tempo, quando sujeitos a agua de ma qualidade. Testar o procedimento de sobrepressao, recomendado na literatura, para desentupimento de tubogotejadores. |
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Palavras-Chave: |
Chemical; Clogging; Entupimento; Gotejamento; Precipitacao quimica; Quimigacao; Trickler. |
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Thesagro: |
Gotejador; Hidráulica; Irrigação. |
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Thesaurus Nal: |
irrigation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01134nam a2200265 a 4500
001 1754772
005 1996-05-02
008 1995 bl uuuu m 00u1 u #d
100 1 $aLEITE, J. A. de O.
245 $aAvaliacao da susceptibilidade de tubogotejadores ao entupimento por precipitados quimicos de carbonato de calcio.
260 $aLavras : UFLA$c1995
300 $a64p.
500 $aTese Mestrado.
520 $aAvaliar a susceptibilidade de cinco modelos de tubogotejadores ao entupimento por precipitados quimicos oriundos de agua de irrigacao contendo altos teores de carbonato de calcio (CaCO3). Determinar as variacoes que ocorrem no coeficiente de variacao de vazao dos emissores ao longo do tempo, quando sujeitos a agua de ma qualidade. Testar o procedimento de sobrepressao, recomendado na literatura, para desentupimento de tubogotejadores.
650 $airrigation
650 $aGotejador
650 $aHidráulica
650 $aIrrigação
653 $aChemical
653 $aClogging
653 $aEntupimento
653 $aGotejamento
653 $aPrecipitacao quimica
653 $aQuimigacao
653 $aTrickler
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Registro original: |
Embrapa Hortaliças (CNPH) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado; Embrapa Trigo. |
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Data corrente: |
17/02/2023 |
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Data da última atualização: |
27/02/2023 |
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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: |
CHAVES, M. S.; ANTUNES, M. B.; SILVA, G. B. P. da; GRAICHEN, F. A. S.; TORRES, G. A. M.; MARTINELLI, J. A. |
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Afiliação: |
MARCIA SOARES CHAVES, CPACT; MARCIELE BARBIERI ANTUNES, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; GERARDA BEATRIZ PINTO DA SILVA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; FELIPE ANDRÉ SGANZERLA GRAICHEN, UNIVERSIDADE ESTADUAL DE MATO GROSSO DO SUL; GISELE ABIGAIL MONTAN TORRES, CNPT; JOSÉ ANTÔNIO MARTINELLI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL. |
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Título: |
Pre and post stage of infection of Magnaporthe oryzae Oryza in wheat leaves with different resistance levels. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Brazilian Journal of Microbiology, v. 53, p. 1091-1100, 2022. |
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DOI: |
https://doi.org/10.1007/s42770-022-00749-7 |
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Idioma: |
Inglês |
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Notas: |
Online first 12 April 2022. |
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Conteúdo: |
Blast fungus (Magnaporthe oryzae B.C. Couch) is an imminent threat to global food security because it causes serious yield losses in rice (Oryza sativa L.) and wheat (Triticum aestivum L.). The investigation of infection processes in resistant and susceptible varieties, as well as the cellular responses involved in resistance, can help us to better understand the process of interaction of the M. oryzae-Poaceae pathosystems. Thus, the objectives of this study were to evaluate the processes of pre-and post-infection of M. oryzae in leaves of wheat varieties with diferent levels of resistance. The percentage of germinated conidia, appressorium formed, tissue penetration and colonization, and the reaction of leaf tissue to infection were evaluated. A decrease was observed in the percentage of germinated conidia, appressorium formation, tissue penetration and colonization, especially in the tissues of resistant varieties, in addition to an increase in the plant?s response to infection, with cell wall reinforcement, cell death, and autofuorescent cytoplasm aggregation. Nevertheless, our data produced a diferent temporal perspective regarding the expression of the known types of resistance. We found that, for a single genotype, recognition can start as early as 6 h after inoculation and continue to evolve until very late during the infection cycle, culminating in cell death. The combined and overlapping pre- and post-haustorial resistance mechanisms were sufcient to prevent disease symptoms, with a few punctual lesions observed in one of the resistant varieties (BR 18) and no visible symptoms in the other two (Ônix or BRS229) as opposed to susceptible variety. MenosBlast fungus (Magnaporthe oryzae B.C. Couch) is an imminent threat to global food security because it causes serious yield losses in rice (Oryza sativa L.) and wheat (Triticum aestivum L.). The investigation of infection processes in resistant and susceptible varieties, as well as the cellular responses involved in resistance, can help us to better understand the process of interaction of the M. oryzae-Poaceae pathosystems. Thus, the objectives of this study were to evaluate the processes of pre-and post-infection of M. oryzae in leaves of wheat varieties with diferent levels of resistance. The percentage of germinated conidia, appressorium formed, tissue penetration and colonization, and the reaction of leaf tissue to infection were evaluated. A decrease was observed in the percentage of germinated conidia, appressorium formation, tissue penetration and colonization, especially in the tissues of resistant varieties, in addition to an increase in the plant?s response to infection, with cell wall reinforcement, cell death, and autofuorescent cytoplasm aggregation. Nevertheless, our data produced a diferent temporal perspective regarding the expression of the known types of resistance. We found that, for a single genotype, recognition can start as early as 6 h after inoculation and continue to evolve until very late during the infection cycle, culminating in cell death. The combined and overlapping pre- and post-haustorial resistance mechanisms were sufcient to prevent disease... Mostrar Tudo |
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Thesagro: |
Arroz; Brusone; Oryza Sativa; Trigo; Triticum Aestivum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02506naa a2200265 a 4500
001 2151852
005 2023-02-27
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s42770-022-00749-7$2DOI
100 1 $aCHAVES, M. S.
245 $aPre and post stage of infection of Magnaporthe oryzae Oryza in wheat leaves with different resistance levels.$h[electronic resource]
260 $c2022
500 $aOnline first 12 April 2022.
520 $aBlast fungus (Magnaporthe oryzae B.C. Couch) is an imminent threat to global food security because it causes serious yield losses in rice (Oryza sativa L.) and wheat (Triticum aestivum L.). The investigation of infection processes in resistant and susceptible varieties, as well as the cellular responses involved in resistance, can help us to better understand the process of interaction of the M. oryzae-Poaceae pathosystems. Thus, the objectives of this study were to evaluate the processes of pre-and post-infection of M. oryzae in leaves of wheat varieties with diferent levels of resistance. The percentage of germinated conidia, appressorium formed, tissue penetration and colonization, and the reaction of leaf tissue to infection were evaluated. A decrease was observed in the percentage of germinated conidia, appressorium formation, tissue penetration and colonization, especially in the tissues of resistant varieties, in addition to an increase in the plant?s response to infection, with cell wall reinforcement, cell death, and autofuorescent cytoplasm aggregation. Nevertheless, our data produced a diferent temporal perspective regarding the expression of the known types of resistance. We found that, for a single genotype, recognition can start as early as 6 h after inoculation and continue to evolve until very late during the infection cycle, culminating in cell death. The combined and overlapping pre- and post-haustorial resistance mechanisms were sufcient to prevent disease symptoms, with a few punctual lesions observed in one of the resistant varieties (BR 18) and no visible symptoms in the other two (Ônix or BRS229) as opposed to susceptible variety.
650 $aArroz
650 $aBrusone
650 $aOryza Sativa
650 $aTrigo
650 $aTriticum Aestivum
700 1 $aANTUNES, M. B.
700 1 $aSILVA, G. B. P. da
700 1 $aGRAICHEN, F. A. S.
700 1 $aTORRES, G. A. M.
700 1 $aMARTINELLI, J. A.
773 $tBrazilian Journal of Microbiology$gv. 53, p. 1091-1100, 2022.
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