Evaluation of a Bacillus thuringiensis isolate-based formulation against the pod borer, Helicoverpa armigera Hübner (Lepidoptera: Noctuidae)
نویسندگان
چکیده
منابع مشابه
A geometric morphometric study on geographical Iranian populations of the pod borer, Helicoverpa armigera (Lepidoptera: Noctuidae)
تصاویر بال جلو و عقب (به ترتیب دارای 15 و 12 لندمارک) 5 جمعیت جغرافیایی پروانه‌ی کرم غوزه‌ی پنبه، Helicoverpa armigera (Hübner)، از مناطق مختلف شمال و شمال غرب کشور مورد تجزیه و تحلیل چند متغیره قرار گرفت. تعداد 287 تصویر متعلق به بال جلو و 277 تصویر متعلق به بال عقب با استفاده از 26 متغیر ریخت‌سنجی هندسی در بال جلو و 20 کاراکتر در بال عقب با یکدیگر مقایسه شدند. آنالیز فاکتورهای مربوطه نشان داد...
متن کاملToxicity of several delta-endotoxins of Bacillus thuringiensis against Helicoverpa armigera (Lepidoptera: Noctuidae) from Spain.
Toxicity and larval growth inhibition of 11 insecticidal proteins of Bacillus thuringiensis were evaluated against neonate larvae of Helicoverpa armigera, a major pest of important crops in Spain and other countries, by a whole-diet contamination method. The most active toxins were Cry1Ac4 and Cry2Aa1, with LC50 values of 3.5 and 6.3 microg/ml, respectively. At the concentrations tested, Cry1Ac...
متن کاملa geometric morphometric study on geographical iranian populations of the pod borer, helicoverpa armigera (lepidoptera: noctuidae)
multivariate analyses of the morphological variation in five geographical populations of the pod borer, helicoverpa armigera (hã¼bner), was performed using 15 and 12 landmarks selected from the fore- and hindwings respectively. using their geometric morphometric characters (26 in the forewings and 20 in the hindwings), 287 and 277 images of fore- and hindwings were made respectively. analyses o...
متن کاملInteraction of Bacillus thuringiensis toxins with larval midgut binding sites of Helicoverpa armigera (Lepidoptera: Noctuidae).
In 1996, Bt-cotton (cotton expressing a Bacillus thuringiensis toxin gene) expressing the Cry1Ac protein was commercially introduced to control cotton pests. A threat to this first generation of transgenic cotton is the evolution of resistance by the insects. Second-generation Bt-cotton has been developed with either new B. thuringiensis genes or with a combination of cry genes. However, one re...
متن کاملField Evolved Resistance in Helicoverpa armigera (Lepidoptera: Noctuidae) to Bacillus thuringiensis Toxin Cry1Ac in Pakistan
Helicoverpa armigera (Hübner) is one of the most destructive pests of several field and vegetable crops, with indiscriminate use of insecticides contributing to multiple instances of resistance. In the present study we assessed whether H. armigera had developed resistance to Bt cotton and compared the results with several conventional insecticides. Furthermore, the genetics of resistance was al...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Egyptian Journal of Biological Pest Control
سال: 2020
ISSN: 2536-9342
DOI: 10.1186/s41938-020-00218-z