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| Registros recuperados: 13 | |
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| GONCALVES, R. C.; LAU, D.; OLIVEIRA, J. R.; MAFFIA, L. A.; CASCARDO, J. C. M.; ALFENAS, A. C.. |
| Bacterial leaf blight of eucalyptus is initially characterized by water soaked, angular, amphigenous and interveinal lesions, concentrated along the main vein, at the edges or scattered on the leaf blade. As the disease progresses, the lesions become brown to pale, and when young leaves are infected leaf cut areas at the edges or perforations at the center of the lesions may appear due to abortion of the necrotic area. Eventually, necrosis may be found on petiole and twigs. Leaf fall commonly occurs on highly susceptible genotypes due to the early senescence of diseased leaves. Precise diagnosis is accomplished by bacterial exudation from leaf sections placed in a water drop under light microscope (200 x). Twenty-five bacterial isolates from Amapá (2),... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Xanthomonas; Pseudomonas; Erwinia; Rhizobiaceae; Doença de planta; Bactéria; Mancha foliar; Etiologia; Eucalipto; Eucalyptus spp; Plant diseases and disorders; Bacteria; Leaf blight; Etiology; Enfermedades y desórdenes de las plantas; Marchitez foliar; Etiología. |
| Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/510894 |
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| MELO, D. F.; MELLO, S. C. M. de. |
| Abstract ? The objective of this work was to set up ideal conditions for conidia mass production of Dicyma pulvinata. Four isolates were compared in terms of their growth and conidia production on various substrates (grains of parboiled rice, common rice, maize and wheat, besides chipped maize and rice husk), temperatures (19, 22, 25, 28 and 31oC), growth containers (aluminum trays, polypropylene bags and Erlenmeyers) and light regimes (continuous darkness, 6 and 12 hours of light/darkness, and continuous light). Temperature effects on conidia germination capacity were also evaluated. The experiments were done in randomized complete block designs, in factorial arrangements (isolates x treatments ? substrates, containers, temperatures and light regimes),... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Biofungicide; Rubber tree; Microcyclus ulei; Biocontrol; Leaf blight. |
| Ano: 2009 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/660877 |
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| Melo,Débora Ferreira; Mello,Sueli Corrêa Marques de. |
| The objective of this work was to set up ideal conditions for conidia mass production of Dicyma pulvinata. Four isolates were compared in terms of their growth and conidia production on various substrates (grains of parboiled rice, common rice, maize and wheat, besides chipped maize and rice husk), temperatures (19, 22, 25, 28 and 31ºC), growth containers (aluminum trays, polypropylene bags and Erlenmeyers) and light regimes (continuous darkness, 6 and 12 hours of light/darkness, and continuous light). Temperature effects on conidia germination capacity were also evaluated. The experiments were done in randomized complete block designs, in factorial arrangements (isolates x treatments - substrates, containers, temperatures and light regimes), with four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microcyclus ulei; Biocontrol; Biofungicide; Leaf blight; Rubber tree. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001000004 |
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| FERRAZ, H. G. M.; BADEL, J. L.; GUIMARÃES, L. M. da S.; REIS, B. P.; TÓTOLA, M. R.; GONCALVES, R. C.; ALFENAS, A. C.. |
| Bacterial leaf blight is a major disease of eucalypt, especially under nursery conditions. Different bacterial species have been associated with the disease in several countries, and despite its importance worldwide, it is not clear to date whether similar disease symptoms are caused by the same or by different etiological agents. In this study, 43 bacterial strains were isolated from blighted eucalypt leaves collected in different geographic areas of Brazil and inoculated onto a susceptible eucalypt clone. Polyphasic taxonomy, including morphological, physiological, biochemical, molecular, and pathogenicity tests showed that only certain strains of Xanthomonas axonopodis caused symptoms of the disease. Strains varied in their aggressiveness, but no... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Enfermedades y desórdenes de las plantas; Cultivos de viveros; Enfermedades bacterianas de las plantas; Marchitez foliar; Doença de Planta; Eucalipto; Eucalyptus spp; Viveiro; Mancha Bacteriana; Plant diseases and disorders; Nursery crops; Bacterial diseases of plants; Leaf blight; Xanthomonas axonopodis. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102787 |
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| Registros recuperados: 13 | |
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