VARIATION IN THE NUMBER OF LARVAL INSTARS OF HELIOTHIS ARMIGERA (HUBNER) (LEPIDOPTERA: NOCTUIDAE)
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چکیده
منابع مشابه
Ovicidal activity of Atalantia monophylla (L) Correa against Helicoverpa armigera Hubner (Lepidoptera: Noctuidae)
Hexane, chloroform and ethyl acetate crude extracts of Atalantia monophylla leaf were studied for ovicidal activity against Helicoverpa armigera at 0.5. 1.0, 2.5 and 5.0% concentrations. The ovicidal activity of 67.10% was statistically significant noticed in hexane extract at 5.0% concentration. The least LC50 value of 2.60% was observed in hexane extract with significant Chi-square value at P...
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عملکرد تغذیه‌ای لارو (Helicoverpa armigera ( Hübner (مراحل لاروی چهارم، پنجم و ششم) با تغذیه از میوه سبز نارس ارقـام مختلـف گوجه فرنگی ( ارس، اترک، کورال، ریوگراند، موبیل، سیوند، سوپر موبیل، سوپر چف، سوپر کویین و سوپر اوربانا) تحت شرایط آزمایشگاهی دمای ۱±۲6 درجه سلسیوس، رطوبت نسبی 10±60 درصد و دوره نوری ۱۶ ساعت روشنایی و ۸ ساعت تاریکی بررسی شـد. بیـش‌ترین و کم‌تـرین مقادیر هضم شوندگی غذا (AD) ...
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Larvae of the tobacco budworm are major polyphagous pests throughout the Americas. Development of effective microbial biopesticides for this and related noctuid pests has been stymied by the natural resistance mediated innate immune response. Hemocytes play an early and central role in activating and coordinating immune responses to entomopathogens. To approach this problem we completed RNA-seq...
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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 کاملSurvival and Feeding of African Bollworm, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) Affected by Neem, Azadirachta indica (A. Juss) Extracts
The effects of neem oil (Nimbecidine 0.03% Aza) and water extracts of neem seed and leaf on African bollworm, Helicoverpa armigera were studied each at three concentration levels (2.5%, 5% and 10%) under laboratory condition. Square dip and larval immersion experiments were conducted using Completely Randomized Design in three replications. In square dip experiment, high mortalities were statis...
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ژورنال
عنوان ژورنال: Australian Journal of Entomology
سال: 1978
ISSN: 1326-6756,1440-6055
DOI: 10.1111/j.1440-6055.1978.tb01492.x