تأثیر تنش خشکی بر میزان کاتالاز، پراکسیداز و پروتئین برگ 3 رقم کلزا

In order to evaluate of influence of catalase and proxidase enzymes and proteins of leaves in three winter rapeseed cultivars in response to drought stress a field experiment was conducted as a split plot, arranged in a Randomized Complete Block Design (CRBD) with three replication at the end of flowering to seed filling. The main factor drought stress in two levels: stress and control (160 and 80 mm evaporation from pan respectively) and sub-factor were cultivars at three levels: 1– Billy 2- Adriana and 3- Tassilo. Leaf protein content, catalase and proxidase were measured 26 days after cessation of irrigation (at the seed filling) The results showed that in drought stress increased catalase and proxidase activity significantly. The significant differences observed between varieties in the two enzymes. Interactive effects of drought and cultivar was significant on the amount of protein and proxidase, but on catalase had no significant effect. For the activity of catalase, Tassilo and proxidase, Billy had the greatest difference between control and drought. On the Protein, Adriana showed further increase in stress as compared to other cultivars. According to the results, Adriana is drought tolerant than other two varieties.