EN
The effect of methyl jasmonate (JA-Me) on the growth and development of fhree isolates of Fusarium oxysporum Schlecht. f. sp. callistephi (Foc), f. sp. dianthi (Fod) and f. sp. narcissi (Fon) was investigated. JA-Me added to PDA (Merck) at the concentration of 100 μg/cm³ limited the growth of Foc, Fod and Fon by 60%. JA-Me at the concentration of 500 μg/cm³ totally inhibited the mycelium growth of Foc, Fod and Fon. JA-Me vapor showed stronger inhibitory effect on the mycelium of Foc, Fod and Fon; at a concentration of 20 μg/cm³ totally inhibited mycelium growth of tested special forms of F. oxysporum. Germination of spores of Foc, Fod and Fon on the Komad's medium was totally inhibited by JA-Me at a concentration of 400 μg/cm³.