Wpływ wybranych amin roślinnych na zasiedlanie siewek pszenżyta ozimego przez mszycę czeremchowo-zbożową

Tests were focused on the influence of plant polyamines and tyramine on seedlings of winter triticale by Rhopalosiphum padi L. Obtained results showed that putrescine and agmatine negatively influenced aphids settling at 1 mM concentration. The other amines at lower level were rather attractants. However, at 10 mM concentration attractant activity of the amines was deleted, and putrescine, spermidine and spermine caused a significant increase of relative index of deterrence during whole period of observations. Positive values of the coefficient were also obtained in case of a higher level of agmatine but only after 2 hours.