Susceptibility of barley cultivars and lines to Fusarium infection and mycotoxin accumulation in kernels

Heads of 12 barley genotypes (8 cultivars and 4 lines) were inoculated with conidial suspension of the following single isolates: F. culmorum no. 3, F, graminearum no. 122 and F. sporotrichioides no. ATCC 62 360. The number of kernels per head, 1000 kernel weight and yield have been calculated for each genotype. Seed samples collected at harvest were analysed for several trichothecene mycotoxins and zearalenone. The mycotoxin concentrations (mg/kg) in barley kernels inoculated with F. graminearum were as follows: deoxynivalenol (DON) 0.1 to 5.4 (av. 2.3), 3-acetyldeoxy-nivalenol (3-AcDON) 0.0-0.2 (av. 0.1), 15-acetyldeoxynivalenol (15-AcDON) 0.0-0.7 (av. 0.2), nivalenol (NIV) 0.0-0.8 (av. 0.3), zearalenone (ZEA) 0.0-0.1 (av. 0.0); F. culmorum: DON 0.6 to 12.0 (av. 5.3), 3-AcDON 0.1 to 1.0 (av. 0.6), 15-AcDON nd, NIV 0.1-0.7 (av. 0.3), ZEA 0.1-0.5 (av. 0.2). F. sporotrichioides T-2 toxin 2.4-13.9 (av. 6.0), HT-2-toxin 0.1-0.8 (av. 0.3) and neosolaniol 0.2-1.5 (av. 0.7).