Acessibilidade / Reportar erro

INFLUENCE OF FUSARIUM GRAMINEARUM ON THE GERMINATION OF WHEAT (TRITICUM AESTIVUM L.) GENOTYPES

ABSTRACT

The objective of this work was to evaluate the effect of Fusarium graminearum on seed germination in 30 genotypes of wheat seeds. First, the pathogen incidence was determined by deep freezing blotter test, followed by evaluation of seeds germination. Analyses were made to check for correlation between pathogen seed incidence and seed germination, seeds with symptoms of the pathogen and seeds killed by F. graminearum(SDF). The correlation was nonsignificant between seeds with symptoms of the pathogen and incidence of F. graminearum in the seeds, as was also the case for seed germination and incidence of the pathogen in the seeds. On the other hand, the correlation analysis between seeds killed by the pathogen and incidence of the pathogen, and between seed germination and SDF, were significant, with r = 0.65 and r = –0.56, respectively. These results showed that F. graminearum affectedthewheat seed germination.

KEY WORDS
Fusarium head blight; seed

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
E-mail: arquivos@biologico.sp.gov.br