مطالعه تخم ريزيAcari: Tetranychidae) Tetranychus urtica Koch) بعد از قرار گرفتن در معرض سه عصاره گياهي اتانولي

Study on egg laying of Tetranychus urtica Koch (Acari: Tetranychidae) after exposure to three ethanolic plant extract

متابوليت هاي ثانويه گياهي موادي كم خطر و كاربردي براي كنترل آفات كشاورزي و پزشكي هستند. در اين تحقيق اثر اتانول و عصاره هاي اتانولي Calendula officinalis ,Aloe vera و Syzygium aromaticumروي ميزان تخم ريزي كنه Tetranychus urtica Koch ارزيابي شد. برش هايي دايره اي شكل از برگ لوبيا توسط عصاره هاي اتانولي گياهان اخير و اتانول (95%) اسپري و پس از آن ده كنه بارور روي هر برگ قرار گرفت. در طي سه روز شمارش، كمترين تخم (4/03 تخم به ازاي هر ماده) در تيمار A. Vera مشاهده شد. در حالي كه در تيمار شاهد تعداد 14/56 تخم شمارش شد.

Plant secondary metabolites are safe and applicable material to control the agricultural and medical pests. The effect of ethanol and ethanolic extracts of Aloe vera, Calendula officinalis and Syzygium aromaticum on Tetranychus urtica Koch oviposition evaluated in this research. Bean leaf disks were sprayed with the plant derived chemicals and ethanol, and thereafter ten fertile female mites were placed on each leaf disk. The number of mites and the laid eggs on the leaves were recorded every day. During three days, the least laid eggs (4.03 eggs/female) were recorded in A. Vera while it was 14.56 eggs/female in control treatment