Data/hora: 01/06/2024 02:15:28

Biblioteca(s): | Embrapa Soja.
Data corrente: | 03/10/2000
Data da última atualização: | 26/07/2017
Autoria: | LEITE, R. M. V. B. C.; TREZZI, M. M.; OLIVEIRA, M. M. de; ARIAS, C. A. A; CASTIGLIONI, V. B. R.
Título: | Reaction of sunflower genotypes to Alternaria helianthi in the state of Parana, Brazil.
Ano de publicação: | 1999
Fonte/Imprenta: | Helia, Novi Sad, v.22, n.31, p.151-158, Dez. 1999.
Idioma: | Inglês
Conteúdo: | Sunflower (Helianthus annuus L.) can be affected by leaf blight and stem spot disease caused by Alternaria helianthi. Genotypes with genetic resistance to this disease are highly desirable for reducing yield losses. The reaction of 28 sunflower genotypes to Alternaria leaf spot disease was evaluated in the state of Parana, Brazil, during the 1995-96 and 1996-97 growing seasons. Disease occurrence, under natural conditions, was evaluated at the flowering stage with reference to a diagrammatic scale of severity, varying from 0 to 5 according to the area of diseased leaf tissue. High Alternaria disease intensity was observed in eight field trials. The genotypes Contiflor 3, Contiflor 15 and Cargill 9401 showed an intermediate level of resistance to the Alternaria disease.
Palavras-Chave: | Brasil; Disease; Fungus; Resistance; Sunflower.
Thesagro: | Alternaria Helianthi; Doença; Fungo; Girassol; Helianthus Annuus; Resistência.
Thesaurus Nal: | Brazil; fungi.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (1460-1) - UPC - AP - -- -  -  -  - DIS