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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Item Resistance to Meloidogyne paranaensis in wild Coffea arabica(Sociedade Brasileira de Fitopatologia, 2009) Boisseau, Marc; Aribi, Jamel; Sousa, Fábio Rodriguez de; Carneiro, Regina M.D.G.; Anthony, FrançoisNine accessions of wild Coffea arabica from Ethiopia were evaluated for resistance to Meloidogyne paranaensis. Two wellcharacterized susceptible and resistant cultivars were used as comparative controls. The experiments were conducted in a growth chamber using a clonal population of M. paranaensis (esterase phenotype P1) originating from Brazil. Resistance and susceptibility to the nematode were evaluated using the number of nematodes (eggs and J2) per plant, number of nematodes per gram of root and the reproduction factor (RF). All wild coffee accessions expressed a resistance response to M. paranaensis similar to that of the resistant control Nemaya (RF < 1.0). These results provide coffee breeders with material whose resistance can be transferred into commercial cultivars.Item Pathogenicity of Meloidogyne spp. (Tylenchida: Meloidogynidae) from Brazil and Central America on two genotypes of Coffea arabica(Sociedade Brasileira de Fitopatologia, 2008) Carneiro, Regina M.D.G.; Mesquita, Luiz F.G. de; Gonçalves, Wallace; Pereira, Antônio A.Entre as espécies de nematóides de galhas mais danosas ao cafeeiro, Meloidogyne exigua, Meloidogyne paranaensis, Meloidogyne incognita, Meloidogyne arabicida, Meloidogyne izalcoensis e Meloidogyne mayaguensis são as que causam os maiores problemas em áreas de cultivo de café no Brasil e países da América Latina. A reação de resistência a essas seis epécies foi estudada na progênie H419-5-4-5-2, obtida do cruzamento artificial entre cultivar Catuaí Amarelo IAC 30 com a seleção de Híbrido de Timor UFV 445-46.