Temporal and intraplant variability of Cry1Ac expression in Btcotton and its influence on the survival of the cotton bollworm
Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera).
Resistance to the Cry1Ac endotoxin of Bacillus thuringiensis in the cotton bollworm
, Helicoverpa armigera (Lepidoptera: Noctuidae).
Both laboratory tests and field monitoring have verified that cotton bollworm
can develop resistance to Bt cotton.
Cultivars containing the Monsanto Bt gene are highly resistant to tobacco budworm [Heliothis virescens (Fabricius)] and pink bollworm [Pectinophora gossypiella (Saunders)] larvae, but are less resistant to the cotton bollworm
[Helicoverpa zea (Boddie)] and the American bollworm [H.
The intention was to lessen pesticide use on Australian cotton farms, which are plagued by the cotton bollworm
and the native bollworm (Helicoverpa species).
is toxic largely to destructive caterpillars such as the European corn borer and the cotton bollworm
; it is not harmful to birds, fish, mammals, or people.
With respect to the reported failure of Monsanto's Bt cotton to control the cotton bollworm
in Texas, the EPA is closely monitoring the situation.
Using genetic engineering techniques, a team of Australian researchers has created plant cells which produce a virus that kills a costly agricultural pest, Helicoverpa armigera, the cotton bollworm
, Helicoverpa armigera (Hubner) is very important polyphagous insect pest with wide host range known for its economic losses worldwide.
Species treated in this volume include desert locust, mountain pine beetle, tsetse flies, cactus moth, false codling moth, Anopheles arabiensis, rice stem borers, cotton pests, New World screwworm, red palm weevil, fire ant, tarnished plant bug, Aedes albopictus, oriental fruit fly, Mediterranean fruit fly, boll weevil, cotton bollworm
, pink bollworm, codling moth, painted apple moth, and Formosan subterranean termite.
Close-ups of 12-day-old cotton bollworm
larvae on cotton bolls.
Relation of Hosts to Abundance of Cotton Bollworm
USDA scientists in College Station, Texas, are working to harness chemicals responsible for this flower's perfumed scent to attract the earworm--also known as the cotton bollworm
, tomato fruit worm, and sorghum head worm--to pesticides.
Although the primary aim of transgenic Bt cotton is to control the cotton bollworm
In just 2-1/2 hours, it could detect remains of cotton bollworm
larvae in the soldier bug's gut.