Characteristics of Resistance to Bacillus thuringiensis Toxin Cry2Ab in a Strain of Helicoverpa punctigera (Lepidoptera: Noctuidae) Isolated from a Field Population

In 1996, the Australian cotton industry adopted Ingard that expresses the Bacillus thuringiensis (Bt) toxin gene cry1Ac and was planted at a cap of 30%. In 2004–2005, Bollgard II, which expresses cry1Ac and cry2Ab, replaced Ingard in Australia, and subsequently has made up >80% of the area plante...

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