Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Bt-resistance"”.
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Modeling insect resistance to transgenic corn and cowpea
The global area planted to Bt crops covered over 66 million hectares in 2011. Insect resistance management (IRM) is implemented to protect the efficacy of commercial transgenic crops expressing Bacillus thuringiensis toxins because the benefits of the pest susceptibility to Bt toxins is considered …
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A pan-genomics approach linking genotype and phenotype in the mega-pest, Helicoverpa armigera
… and more recently with Bacillus thuringiensis (Bt) derived bio-toxins. Understanding the genetic mechanisms that drive pesticide resistance is crucial for effective monitoring of resistance but remains challenging. Recent advances in sequencing technologies, specifically long-read sequencing, …
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A pan-genomics approach linking genotype and phenotype in the mega-pest, Helicoverpa armigera
… and more recently with Bacillus thuringiensis (Bt) derived bio-toxins. Understanding the genetic mechanisms that drive pesticide resistance is crucial for effective monitoring of resistance but remains challenging. Recent advances in sequencing technologies, specifically long-read sequencing, …
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Fitness Costs of Resistance to Bacillus thuringiensis in the Pink Bollworm Pectinophora gossypiella
Resistance to Bacillus thuringiensis (Bt) cotton, Gossypium hirsutum, is associated with fitness costs in pink bollworm, Pectinophora gossypiella. Previous work has demonstrated that costs of resistance are induced by environmental factors including insecticidal cotton phytochemicals such as …
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Evaluating the effect of foliar insecticides on suspected Bt-resistant western corn rootworms in rotated soybean
… eggs in both corn and soybean fields. Commercial Bt corn hybrids targeting this pest have been widely adopted and were an effective tool to manage the rotation-resistant western corn rootworm. Until recently, documentation of field-evolved resistance by western corn rootworm to Bt traits was …
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Western corn rootworm (Coleoptera: Chrysomelidae; Diabrotica virgifera virgifera LeConte) emergence and abundance in transgenic cornfields with structured and seed blend refuges
… larvae have been managed using transgenic Bt (Bacillus thuringiensis Berliner) corn hybrids expressing toxic Cry proteins (i.e., Cry3Bb1, Cry34Ab1/35Ab1, mCry3a) for a decade. To delay western corn rootworm resistance to Bt toxins, growers must plant a non-Bt “refuge” in each Bt cornfield. …
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Field-evolved resistance to Cry3Bb1 corn by the western corn rootworm: Investigations of resistance, emergence, node-injury ratings, and fitness
… Agency (US EPA) approved the use of transgenic Bt (Bacillus thuringiensis Berliner) corn hybrids to manage the larvae of this billion dollar pest. Bt hybrids express various toxic Cry proteins (i.e., Cry3Bb1, Cry34Ab1/Cry35Ab1, mCry3A, eCry3.1Ab) which have proven to be valuable tools for …