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Characterization of Meloidogyne incognita populations from São Paulo and Minas Gerais state and their pathogenicity on coffee plants

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dc.contributor.author Oliveira, Dagoberto S.
dc.contributor.author Oliveira, Rosângela D’Arc Lima
dc.contributor.author Silva, Débora G.
dc.contributor.author Silva, Rodrigo V.
dc.date.accessioned 2022-01-24T21:45:40Z
dc.date.available 2022-01-24T21:45:40Z
dc.date.issued 2011
dc.identifier.citation OLIVEIRA, D. S. et al. Characterization of Meloidogyne incognita populations from São Paulo and Minas Gerais state and their pathogenicity on coffee plants. Tropical Plant Pathology, Brasília, v. 36, n. 3, p. 190-194, mai./jun. 2011. pt_BR
dc.identifier.issn 1983-2052
dc.identifier.uri https://www.scielo.br/j/tpp/a/8F7KmRk6rFm3B8q9FCvKqrR/?format=pdf&lang=en pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13233
dc.description.abstract Meloidogyne incognita is one of the most aggressive and harmful plant-parasitic nematodes attacking coffee plantations in Brazil. However, populations from Minas Gerais state (MG) do not incite disease on coffee plants as strongly as populations from São Paulo state (SP). This study aimed to compare the capacity to incite disease on coffee plants from SP and MG-populations based on penetration and post-infective development of second-stage juveniles (J2) stage. Both populations were confirmed as M. incognita by using esterase phenotype I1 and species-specific PCR. Physiologically they were classified as race 2 by differential host test. Susceptible (C. Arabica ‘Catuaí Vermelho IAC 44’) and resistant coffee seedlings (C. canephora ‘Apoatã IAC 2258’) were inoculated with J2 and assessed for penetration and development from 2nd to 40th day after inoculation. Although the penetration rate of the J2 from both populations was higher in susceptible than in resistant seedlings, the SP-population showed a higher penetration than the MG-population for both variables. Post-infective development proceeded only in individuals of the SP-population in susceptible seedlings. The incompatibility between the MG-population and coffee seedlings was evident at the penetration phase, which was also followed by post-penetration resistance factors leading to significant J2 emigration, impeding nematode establishment. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Sociedade Brasileira de Fitopatologia pt_BR
dc.relation.ispartofseries Tropical Plant Pathology;v.36, n.3, 2011
dc.rights Open Access pt_BR
dc.subject Coffea spp. pt_BR
dc.subject Nematóide-das-galhas pt_BR
dc.subject Patogênese pt_BR
dc.subject Resistência pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title Characterization of Meloidogyne incognita populations from São Paulo and Minas Gerais state and their pathogenicity on coffee plants pt_BR
dc.type Artigo pt_BR

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