Interactions between the tobacco budworm, Heliothis virescens, and the delta-endotoxin produced by the HD-1 isolate of Bacillus thuringiensis var. kurstaki: Relationship between length of exposure to the toxin and survival
Authors: Dulmage, H.T., Graham, H.M., Martinez, E.
Journal, Volume, Year: Journal of Invertebrate Pathology, volume 32:40-50, 1978
The relationship between length of exposure to Bt kurstaki delta-endotoxin and survival of the tobacco budworm Heliothis virescens was determined. Tobacco budworms were able to recover from the effects of Btk toxin; however, as the length of exposure increased, the ability to recover decreased.
This study did not use Bt from transgenic plants.