A pest insect known as bollworm is the first to evolve resistance in the field to plants modified to produce an insecticide called Bt, according to a new research report. Bt-resistant populations of ...

Researchers used genomics to investigate the genetic changes causing resistance to transgenic crops in field populations of the corn earworm, also known as cotton bollworm or Helicoverpa zea. They ...

Eating a blend of non-toxic corn and genetically modified toxic corn can result in corn earworm pests (Helicoverpa zea) developing longer, more narrow and more tapered wings—shaped like the wings of a ...

Two “megapests” that are already a major problem for farmers worldwide, the cotton bollworm and the corn earworm, have interbred in Brazil and swapped genes conferring resistance to pesticides. The ...

A pest insect known as bollworm, or Helicoverpa zea, is the first to evolve resistance in the field to plants modified to produce an insecticide called Bt, according to a new research report.

If left unchecked, insect pests can devastate crops. To minimize damage and reduce the need for insecticide sprays, crops have been genetically engineered to produce bacterial proteins that kill key ...