The germination problem of oat seed lots affected by Fusarium head blight

Autor: Åsmund Bjørnstad, Selamawit Tekle, Helge Skinnes
Rok vydání: 2012
Předmět:
Zdroj: European Journal of Plant Pathology. 135:147-158
ISSN: 1573-8469
0929-1873
Popis: Mycotoxin contamination and reduced germination capacity (GC) of oats affected by Fusarium head blight (FHB) have become serious concerns in Norway. Spawn- and spray-inoculated field trials were conducted from 2007 to 2010 to screen for resistant genotypes and to study the relationship between GC and deoxynivalenol (DON) contamination. Correlation coefficients between GC and DON level varied from −0.412 to −0.711 (P 60 %) for all inoculations. Seed dressing and dehulling individually were not effective in improving GC, but when combined increased GC to the percentage of kernels having viable germ. We hypothesize that in addition to the level of DON, SI influences the GC of Fusarium-damaged oats, especially in wet years that may facilitate late-initiated infections.
Databáze: OpenAIRE