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Ramularia rubella and Uromyces rumicis infecting Rumex obtusifolius in the Azores

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dc.contributor.authorSilva, Luís
dc.contributor.authorTavares, João
dc.contributor.authorBrasseur, Raphael
dc.date.accessioned2011-01-17T10:26:31Z
dc.date.available2011-01-17T10:26:31Z
dc.date.issued1997
dc.description.abstractRumex spp. (Polygonaceae), namely Rumex obtusifolius L., are considered as weeds in permanent pastures in São Miguel island (Azores), demanding manual and chemical control. However, R. obtusifolius plants are found to be heavily infected by Ramularia rubella (Bon.) Nannf. or by Uromyces rumicis (Schum.) Wint. This is the first record of R. rubella for the Azores. This hyphomycete infects all the phenophases of R. obtusifolius and is found widely distributed on São Miguel island. Infected leaves of R. obtusifolius may present more than one hundred red spots each, as well as conidiophores and conidia. U. rumicis, already recorded for the Azores on Rumex pulcher L., was now found infecting all the phenophases of R. obtusifolius in São Miguel island. Leaves infected by the rust become chlorotic and covered by uredosori and uredospores. In late summer teleosori and teleospores were also found. Both fungi are potential biological control agents of Rumex spp. in the Azores.por
dc.identifier.citationSILVA, L., J. TAVARES & R. BRASSEUR, (1997). Ramularia rubella and Uromyces rumicis infecting Rumex obtusifolius in the Azores. "Açoreana. Revista de Estudos Açoreanos", 8(3): 375-381.por
dc.identifier.urihttp://hdl.handle.net/10400.3/791
dc.language.isoengpor
dc.publisherSociedade Afonso de Chavespor
dc.relation.ispartofseriesAçoreana. Revista de Estudos Açoreanos;8(3)
dc.subjectBiological Controlpor
dc.subjectRamularia rubella (Bon.)por
dc.subjectRumex obtusifolius L.por
dc.subjectRumex pulcher L.por
dc.subjectSão Miguel Island (Azores)por
dc.subjectUromyces rumicis (Schum.)por
dc.titleRamularia rubella and Uromyces rumicis infecting Rumex obtusifolius in the Azorespor
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspor
rcaap.typearticlepor

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