کنترل بیولوژیک طوقه بر چغندرقند Agrotis segetum Denis & Schiffermüller (Lep.: Noctuidae) با استفاده از طعمه Bacillus thuringiensis (Bt) نیمه جامد (Semisolid)

ارزیابی کارایی لاین‌های چغندر‌قند تراریخته حاوی ژن cry1Ab در کنترل Agrotis segetum Schiff. (Lep., Noctuidae)

در کشور ما چغندرقند، .Beta vulgaris L، مورد حمله چندین آفت کلیدی قرار می­ گیرد که یکی از این آفات شب ­پره زمستانی، Agrotis segetum Schiff، می­ باشد. یکی از روش­ های موثر در کنترل آفات چغندرقند استفاده از گیاهان تراریخته دارای ژن cry1Ab باکتری Bacillus thuringiensis Berliner  می­ باشد. در این پژوهش تاثیر 16 لاین چغندرقند تراریخته نسل T1 به همراه دو لاین چغندرقند به ­عنوان شاهد روی میزان مرگ و می...

Annual Migration of Agrotis segetum (Lepidoptera: Noctuidae): Observed on a Small Isolated Island in Northern China

Migration behavior of the turnip moth, Agrotis segetum (Lepidoptera: Noctuidae), is not well known by far. Here, we present the data from an 11-year study on A. segetum by means of searchlight trapping and ovarian dissection on Beihuang (BH) Island, which located in the center of the Bohai Strait in northern China. The data showed a large number of A. segetum flight across the strait each year,...

A new study on the bacteria of Agrotis segetum Schiff. (Lepidoptera: Noctuidae) and their insecticidal activities

Agrotis segetum Schiff. (Lepidoptera: Noctuidae) is one of the most serious pests of nearly all vegetables in Turkey. In this study, to find a more effective and safe biological control agent, the bacterial flora of Agrotis segetum were investigated in larvae collected from different populations in the vegetable fields of the Black Sea region of Turkey, and 9 bacterial isolates were cultured fr...

Bt a short history of Bacillus thuringiensis

First Record of Steinernema kraussei (Rhabditida: Steinernematidae) from Turkey and Its Virulence against Agrotis segetum (Lepidoptera: Noctuidae).

During a survey of entomopathogenic nematodes (EPNs) in the eastern Black Sea region of Turkey in 2009-2012, a steinernematid species was recorded and isolated using the Galleria-baiting method. The isolate was identified as Steinernema kraussei based on its morphological and molecular properties. The analysis of the ITS rDNA sequence placed the Turkish population of S. kraussei in the "feltiae...

Bacillus thuringiensis Cry1Ac resistance frequency in tobacco budworm (Lepidoptera: Noctuidae).

The tobacco budworm, Heliothis virescens (F.) (Lepidoptera: Noctuidae), is one of the most important pests of cotton, Gossypium hirsutum L, that has become resistant to a wide range of synthetic insecticides. CrylAc-expressing cotton has proven its effectiveness against this insect since its introduction in North America in 1996. However, the constant exposure of tobacco budworm to this protein...