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Reaction of coffee genotypes to different populations of Meloidogyne spp.: detection of a naturally virulent M. exigua population

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dc.contributor.author Muniz, Maria de Fátima S.
dc.contributor.author Campos, Vicente P.
dc.contributor.author Moita, Antônio W.
dc.contributor.author Gonçalves, Wallace
dc.contributor.author Almeida, Maria Ritta A.
dc.contributor.author Sousa, Fábio Rodrigues de
dc.contributor.author Carneiro, Regina Maria D. G.
dc.date.accessioned 2022-01-24T21:38:10Z
dc.date.available 2022-01-24T21:38:10Z
dc.date.issued 2009
dc.identifier.citation MUNIZ, M. F. S. et al. Reaction of coffee genotypes to different populations of Meloidogyne spp.: detection of a naturally virulent M. exigua population. Tropical Plant Pathology, Brasília, v. 34, n. 6, p. 370-378, nov./dez. 2009. pt_BR
dc.identifier.issn 1983-2052
dc.identifier.uri https://www.scielo.br/j/tpp/a/6x6Vw3MfJJmPfhXsW3wTzPF/?format=pdf&lang=en pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13226
dc.description.abstract The reaction of seven genotypes of Coffea arabica to 10 Meloidogyne spp. populations collected mainly from coffee plantations in Brazil and Costa Rica was evaluated under greenhouse conditions. The inoculum consisted of 10,000 eggs per plant. Evaluations were done 8 months after inoculations considering the root fresh weight, gall and egg mass indices, number of eggs per gram of root and reproduction factor (RF). The cultivars Obatã IAC 1669-20, Sarchimor IAC 4361 and Tupi Amarelo IAC 5111 exhibited susceptibility to the four Brazilian M. exigua populations tested. However, cv. Tupi Vermelho IAC 1669-33 revealed resistance (RF value of 0.7) to the M. exigua population from Lavras, Minas Gerais State, Brazil. A population of M. exigua from Bom Jesus de Itabapoana, Rio de Janeiro State, Brazil, was highly virulent on cv. IAPAR 59 (RF= 165.7), bearing resistance gene Mex-1, and was also virulent on genotype Paraíso (H 419-5-4-5-2) (RF=396.2). A Meloidogyne sp. population on coffee from Garça, São Paulo State, Brazil, reproduced at low rates (RF ranging from 0.1 to 3.9) on all genotypes. All tested cultivars were susceptible to M. incognita and M. paranaensis. M. mayaguensis of guava from Paraná State, Brazil, reproduced at low rates in all coffee genotypes; however, another population of coffee, from Costa Rica, was more aggressive and showed RF value that ranged from 0.8 to 12.4. Results of this study point for the first time to the ability of a naturally occurring M. exigua population to overcome the resistance conferred by the Mex-1 gene. 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.34, n.6, 2009
dc.rights Open Access pt_BR
dc.subject Coffea arabica pt_BR
dc.subject Resistência pt_BR
dc.subject Suscetibilidade pt_BR
dc.subject Nematóides de galha pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title Reaction of coffee genotypes to different populations of Meloidogyne spp.: detection of a naturally virulent M. exigua population pt_BR
dc.type Artigo pt_BR

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