Survey of Interaction Among Entomopathogen Fungus, Metarhizium anisopliae, the Aphid, Myzus persicae and Its Host Plant Canola
Message:
Abstract:
The effect of different concentrations of Metarhizium anisopliae strain EUT115 along with control was investigated on various life stages of green peach aphid Myzus persicae, and different canola cultivars, Brassica napus. Thirty aphids of each stage were treated with the fungus and then transferred onto Petri dishes containing leaf-discs placed on 2% water-agar medium. The aphid mortality was recorded daily for 14 days after the beginning of the test. According to the results, after 7 days, the highest mortality was obtained on the RGS003 (5.47 ± 0.44) and the lowest mortality was occurred on the Zarfam genotype (4.983 ± 0.45) and the significant difference was observed between the two genotypes. The highest mortality among the different life stages happened for the adults and was calculated 7.64 ± 0.65 and 8.82 ± 0.50 aphids after 7 and 14 days, respectively. Among the various fungal concentrations, 107 conidia/ml of the fungus caused the highest mortality after 7 (8.38 ± 0.24 aphids) and 14 days (9.60 ± 0.12 aphids), respectively. The results showed that there was interaction between the fungal concentration and the aphid life stage. It is suggested that to control enormous infestation of the green peach aphid in canola fields, the RGS003 genotype and 107 conidia/ml of the fungus can be used. The mean mortality of the aphid was increased by increasing the time from spraying the pathogenic fungus. It shows the importance of fungus-sporulating cadavers of the aphid as a reservoir in surrounding environment.
Language:
Persian
Published:
Journal of Applied Research in Plant Protection, Volume:5 Issue: 1, 2016
Pages:
209 to 216
magiran.com/p1577414  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!