In this research, two plant activators were sprayed on ten weeks old plantlets of Capsicum annuum L. varieties grossum and longum which growth in vivo and in vitro controlled conditions . Crop-Set plant activator was sprayed to the leaf in recommended dose, two and four fold doses (0,6-1,2-2,4 ml/L) and Auxigro plant activator was sprayed to the leaf in recommended dose, two and four fold doses (0,3-0,6- 1,2 g/L) with one week interval for two times. Changing of protein and peroxidase [EC 1.11.1.7] levels in both varieties which is grown under in vivo and in vitro conditions were compared after 24-48-72 hours after second application of plant activators. All of the experiments were realized tree times. After plant activators application POX activity changing in grossum seedlings were determined in different levels. After 24 hours 1,2 ml/L dose of Crop-Set application to the in vivo growth seedlings, POX activity increased 319% while after 72 hours 1,2 g/L dose of Auxigro application to the in vitro growth seedlings, POX activity increased as 140%. In vivo growth longum seedlings POX activity increased 48 hours after 2,4ml/L dose of Crop-Set application as 180%. In vitro growth seedlings POX activity increased 72 hours after 1,2g /L dose of Auxigro application as 123%. According to our research results, both of the plant activators significantly increased POX activity in both plant varieties according to the exposure time
