Data/hora: 02/06/2024 18:26:38

Provedor de dados: | 59
País: | Brazil
Título: | Antagonism of yeasts to Xanthomonas campestris pv. campestris on cabbage phylloplane in field
Autores: | Assis,Sayonara M.P.; Mariano,Rosa L.R.; Michereff,Sami J.; Silva,Gil; Maranhão,Elizabeth A.A.
Data: | 1999-07-01
Ano: | 1999
Palavras-chave: | Xanthomonas campestris pv. campestris; Cabbage; Biocontrol; Yeasts.
Resumo: | Twenty yeast isolates, obtained from cabbage phylloplane, were evaluated for antagonistic activity against Xanthomonas campestris pv. campestris, in field. Plants of cabbage cv. Midori were pulverized simultaneously with suspensions of antagonists and pathogen. After 10 days, plants were evaluated through percentage of foliar area with lesions. Percentage of disease severity reduction (DSR%) was also calculated. Yeast isolates LR32, LR42 and LR19 showed, respectively, 72, 75 and 79% of DSR. These antagonists were tested in seven different application periods in relation to pathogen inoculation (T1=4 d before; T2=simultaneously; T3=4 d after; T4=4 d before + simultaneously; T5=4 d after + simultaneously; T6=4 d before + 4 d after; T7=4 d before + simultaneously + 4 d after). The highest DSRs were showed by LR42 (71%), LR42 (67%), LR35 (69%) and LR19 (68%) in the treatments T7, T4, T5 and T6, which significantly differed from the others. The same yeast antagonists were also tested for black rot control using different cabbage cultivars (Fuyutoyo, Master-325, Matsukaze, Midori, Sekai I and Red Winner). The DSRs varied from 58 to 61%, and there was no significant difference among cultivars.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300002
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S0001-37141999000300002
Formato: | text/html
Fonte: | Revista de Microbiologia  v.30 n.3 1999
Fonte: | info:eu-repo/semantics/openAccess