The present paper examined the effect of jasminic acid in three different concentrations (1000 mg/1; 10 mg/1, and 0.1 mg/1) on the formation of fiavonoids in the culture Ononis arvensis L. in nitro. The tested concentrations of jasminic acid esere applied to the callus and suspension cultures of Ononis arvensis L. in the 4th week of culture growth and elicitation took place for 12; 24; 48; 72, and 168 hours. A statistically significant increase in the content of fiavonoids was found in all administered solutions of jasminic acid after 12 hours of elicitation, excepting the concentration c2 (10 mg/1) in the suspension culture. The highest yield was a 55% increase in the content of fiavonoids after elicitation with jasminic acid in the concentration ci (1000 mg/1) in the callus culture.

        Key words: Ononnis arvensis - fiavonoids - jasminic acid - elicitation