10th Symposium on the Flora of Southeastern Serbia and ...

10 th <strong>Symposium</strong> on the Flora of Southeastern Serbia and Neighbouring regions,Vlasina 17 to 20 June 2010germination was performed. It was determined that it had high effect to thegermination. Concentration of 5 mg/ml completely inhibited the germination ofTriticum vulgare and Lactuce sp.Content of totally organic acids in plants from fire affectedforestNešić, M., Marković, M., Trajković, R., Pavlović, D., Stankov-Jovanović,V., Mitić, V., Ilić, M.Prirodno-matematički fakultet, Univerzitet u Nišu, Srbijanesic_marija@yahoo.comIn 2007 it had been catastrophic fire on Vidlic mountain. It had been burneddown nearly 1000 hectares of forest. That year vegetation was totally destroyed.Ecosystems affected by fire are ecosystems with great changes in every ecologicalparameter. Such ecosystems can recover by natural succession. Places like that areoccupied by pioneer plants which start one natural cycle. In these paper it has beenmonitored content of totally organic acids in plants from fire affected forest. As acontrol it has been used same species plants from forest which had not been affectedby fire. Results indicate that content of totally organic acids from plants fromaffected forest was hire then those in plants from no affected forest. Only in onecase, in one species (Aegopodium podagraria), it was vice versa.101