Myrothecium leaf spot of cotton caused by myrothecium roridum

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorBolsista do CNPq-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorBolsista FAPESP-
Autor(es): dc.creatorMeyer, Maurício Conrado-
Autor(es): dc.creatorda Silva, Juliano César-
Autor(es): dc.creatorMaia, Gerliane Lorena-
Autor(es): dc.creatorBueno, César Júnior [UNESP]-
Autor(es): dc.creatorde Souza, Nilton Luiz [UNESP]-
Data de aceite: dc.date.accessioned2022-08-04T22:02:00Z-
Data de disponibilização: dc.date.available2022-08-04T22:02:00Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2006-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219534-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219534-
Descrição: dc.descriptionMyrothecium leaf spot caused by Myrothecium roridum Tode ex Fr. was observed on cotton fields in Maranhão State, Brazil, causing yield reduction of up to 60%. Disease symptoms are lesions with concentric necrotic rings, with salient structures (sporodochia) irregularly distributed. Symptoms were observed on petioles, bracts, leaves and bolls of cotton cultivars Deltapine Acala 90, Fibermax 966 and Sure Grow 821. The pathogen was isolated and cultivated on potato-dextrose-agar (PDA) medium. The pathogenicity was evaluated on detached healthy bolls from cotton cv. Fibermax 966 (R6 vegetative stage), previously disinfested. Thirteen isolates of M. roridum were tested, which included 8 from cotton and 5 from soybean. Fungal structures were evaluated by using light microscope with ocular micrometer. The isolates infected cotton bolls and the MA-75 was the most aggressive strain. In average lesion diameter is 1,3cm long at 7 days after inoculation, and 2,7cm at 14 days. They also formed sporodochia concentrically disposed on PDA. Conidia are hyalines to dilute olivaceous, single-celled, abundantly produced in a dark green to black mass. Spores from cotton isolates are 5,1µm x 1,5µm in size, and from soybean isolates are 5,8µm x 1,5µm. This is the first report of Myrothecium leaf spot in Brazilian cotton fields.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionEmbrapa Soja, Caixa Postal 131-
Descrição: dc.descriptionBolsista do CNPq-
Descrição: dc.descriptionUNESP-FCA de Botucatu-
Descrição: dc.descriptionBolsista FAPESP-
Descrição: dc.descriptionUNESP-FCA de Botucatu-
Formato: dc.format390-393-
Idioma: dc.languagept_BR-
Relação: dc.relationSumma Phytopathologica-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDisease description-
Palavras-chave: dc.subjectFirst report-
Palavras-chave: dc.subjectFungus-
Palavras-chave: dc.subjectGossypium hirsutum-
Título: dc.titleMyrothecium leaf spot of cotton caused by myrothecium roridum-
Título: dc.titleMancha de mirotécio em algodoeiro causada por myrothecium roridum-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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