دور بعض المخصبات الحيوية و حمض الساليسيليك في المحتوى الفينولي و نشاط أنزيم البيروكسيداز في أوراق نباتات الفليفلة المعداة بفيروس موازييك الخيار

This study was conducted to determine the possibility of reducing infection with cucumber mosaic virus in pepper plants by using two types of biological fertilizers and salicylic acid and investigate the effectiveness of each separately and their mixture in inducing systemic resistance in plants to cucumber mosaic virus infection. induction of resistance was assessed by measuring the peroxidase enzyme activity and total phenols in pepper plants planted within a greenhouse in Tartous, Syria during the 2018-2019 growing season. results showed that the treatment with the first biological fertilizer m1 and salicylic acid showed a significant reduction in infection compared to all other treatments, with increase in peroxidase enzyme activity in the presence and absence of CMV infection (0.325 and 0.183 μmol / mg), respectively), compared with healthy control and CMV-infected control without inoculation with bacteria (0.032 and 0.059 μmol / mg, respectively). The total phenolic content in the presence and absence of CMV infection was 90.49 and 69.35 mg/100 g, whereas in the healthy control and infected control without inoculation with bacteria was 30.17 and 35.17 mg / 100 g, respectively. the results obtained suggested the possibility of using bacterial inoculation together with salicylic acid treatment to the seeds and shoots of plants to improve their growth, productivity, and stimulate systemic resistance against CMV infection.