This study was performed to investigate the constituents, in vitro antifungal activity and phytotoxicity potential of the essential oil from Juniperus polycarpos var. turcomanica leaves. The essential oil was analyzed by GC–FID, and GC/MS, which predominantly contains α-pinene (51.21%), germacrene–B (4.80%), and ∆-cadinene (2.56%). The antifungal activity of the essential oil against some phytopathogenic fungi, including Alternaria alternata, Colletotrichum trichellum, Curvularia fallax, Cytospora sacchari, Fusarium oxysporum, and Macrophomina phaseolina was performed through disk diffusion and agar dilution assays. The essential oil of J. polycarpos var. turcomanica had high antifungal activity against tested phytopathogenic fungi. The most susceptible fungi to the essential oil were C. trichellum in agar dilution and M. phaseolina and C. fallax in disk diffusion methods, whereas, the most resistant fungus to the essential oil was obtained from A. alternata in both assays. Screening methods had an influence on antifungal activity of the essential oil as most of the tested fungi in this study were shown to be more resistant in disc diffusion methods. According to the phytotoxic assay results, the essential oil from J. polycarpos var. turcomanica had high phytotoxicity against three species of weeds, including P. oleracea L., A. retroflexus L., and D. stramonium L. The results of this research suggest that the herbicidal and antifungal activities of the essential oil from J. polycarpos var. turcomanica can be attributed to its major group of constituents, monoterpenes hydrocarbons.

中文翻译：

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杜松Jun香精油的植物毒性和抗真菌特性。土库曼（B. Fedsch。）RP亚当斯离开

进行了这项研究以研究杜松杜仲香精油的成分，体外抗真菌活性和植物毒性潜力。土库曼叶。用GC-FID和GC / MS分析了香精油，其中主要包含α-pine烯（51.21％），ac烯-B（4.80％）和∆- in烯（2.56％）。精油对一些植物病原真菌，包括抗真菌活性链格孢，炭疽病trichellum，弯孢蝗，壳囊甘蔗，尖孢镰刀菌和Macrophomina phaseolina通过圆盘扩散和琼脂稀释试验进行。J. polycarpos var的精油。Turcomanica对被测植物病原真菌具有很高的抗真菌活性。最易感真菌精油是C. trichellum在琼脂稀释和M. phaseolina和C.蝗在磁盘扩散方法，反之，从所获得的最抗性真菌的精油A.病菌在两个测定中。筛选方法对精油的抗真菌活性有影响，因为该研究中的大多数测试真菌在圆盘扩散方法中显示出更高的抗药性。根据植物毒性测定结果，精油从J.polycarpos变种。turcomanica对三种杂草具有很高的植物毒性，这些杂草包括油桐（P. oleracea L.），逆挠曲霉（A. retroflexus L.）和地衣藻（D. stramonium L）。这项研究结果表明，J。polycarpos var精油的除草和抗真菌活性。。土库曼尼卡可归因于其主要成分，即单萜烃。