The influence of different concentrations of essential oil solutions on seed germination of Lolium perenne L. and Trifolium pratense L.

U ovom radu istraživani su alelopatski odnosi eteričnih ulja paprene metvice (Mentha x piperita L.), kamilice (Matricaria chamomilla L.), ružmarina (Rosmarinus officinalis L.) i lavandina (Lavandula x intermedia) na klijavost korova engleskog ljulja (Lolium perenne L.) i crvene djeteline (Trifolium pratense L.). Naklijavanje je provedeno u sterilnim uvjetima u Petrijevim zdjelicama prethodno obloženim filter papirom natopljenim otopinom eteričnog ulja (eterično ulje + H2O + detergent TX- 100 + etanol) te kontrolnim Petrijevim zdjelicama natopljene vodom (H2O) i etanolom. Utjecaj otopine eteričnih ulja na klijavost sjemenki korova je procijenjena određivanjem postotka klijavosti i mjerenjem duljine klijanaca. Otopina eteričnog ulja paprene metvice i lavandina je potpuno inhibirala klijavost engleskog ljulja i crvene djeteline (0% klijavosti). Najbolji inhibicijski učinak na duljinu klijanaca kod engleskog ljulja imala je otopina kamilice, a kod crvene djeteline otopina ružmarina.In this paper, the allelopathic relationships of essential oils of Mentha x piperita L., Matricaria chamomilla L., Rosmarinus officinalis L. and Lavandula x intermedia on the germination of Lolium perenne L. and Trifolium pratense L. were investigated. Germination was performed under sterile conditions in Petri dishes pre-coated with filter paper soaked in essential oil solution (essential oil + H2O + detergent TX- 100 + ethanol) and control Petri dishes soaked in water (H2O) and ethanol. The effect of essential oil solutions on the germination of weed seeds was assessed by determining the germination percentage and measuring the lenght oft he seedlings. A solution of Mentha x piperita L. and Lavandula x intermedia essential oil completely inhibited the germination of Lolium perenne L. and Trifolium pratense L. (0% germination). The best inhibitory effect on the lenght of seedlings in Lolium perenne L. had a solution of Matricaria chamomilla L., and in Trifolium pratense L. solution of Rosmarinus officinalis L