Response of Cattleya Hybrids for Fusarium oxysporum f. sp. cattleyae Foster

Brazilian Archives Of Biology And Technology

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ISSN: 15168913
Editor Chefe: Carlos Ricardo Soccol
Início Publicação: 30/11/1946
Periodicidade: Bimestral
Área de Estudo: Biologia geral

Response of Cattleya Hybrids for Fusarium oxysporum f. sp. cattleyae Foster

Ano: 2011 | Volume: 54 | Número: 2
Autores: Cristiano Pedroso-de-Moraes, Marcelo Claro de Souza, Cínthia Cristina Ronconi, Marco Aurélio Marteline
Autor Correspondente: Cristiano Pedroso-de-Moraes | [email protected]

Palavras-chave: fusarium wilts, orchid, varietal resistance

Resumos Cadastrados

Resumo Inglês:

The Cattleya genus has a great importance in the flower agro-business market. Fusarium wilts, caused by Fusarium
oxysporum f. sp. cattleyae, is considered one of the main factors of decline and death of plants of this genus. Using
seven hybrids (intra and intergenerics) of Cattleya, tests of resistance and susceptibility to F. oxysporum were
performed in conditions of greenhouse for 12 months, using, as evaluation criterion, a scale of the disease severity
ranging from one (resistant) to eight (highly susceptible). High susceptibility to the fungus by Cattleya Nobile´s Wax
Toy, Cattleya Orquidacea´s Mister Fast intrageneric hybrids and Potinara Orquidacea´s Havana Brown
intergeneric hybrid, related to Brassocattleya Orquidacea´s Melody intergeneric hybrid, high resistance to the
pathogens was observed.