INFLUENCE OF DEOXYNIVALENOL ON ELECTROLYTE LEAKAGE IN CEREAL SEEDLINGLEAVES

Polish cultivars of wheat (Almari, Alba, Begra, Kamila, Liwilla, Parad a), rye (Dankowskie Nowe), triticale (Ah-no, Malno), barley (Rudzik), and oats (Diadem, Kornes) were examined for their membranes susceptibi lity to deoxynivalenol (DON), applied at concentration 20-100 mu g/cm( 3) (= 6.10(-5)-3.10(-4) M). Various genotypes susceptbility to DON was best differentiated after 24h-48h of incubation. Electrolytes leakage after DON application at concentration 20 mu g/cm(3) was observed onl y in wheat leaves. Oat leaves membranes remained stable even after app lication 100 mu g DON/cm(3) with only up to 7% injuries. The same DON concentration caused only low amounts of electrolyte leakage in barley cultivars. Rye and triticale membranes susceptibility to DON was inte rmediate between wheat and barley sensitivity.