Impact of delta-endotoxin producing transgenic cotton on insect-plant interactions with Heliothis virescens and Helicoverpa zea (Lepidoptera: Noctuidae)
Authors: Benedict, J.H., Sachs, E.S., Altman, D.W., Ring, D.R., Stone, T.B., Sims, S.R.
Journal, Volume, Year: Environmental Entomology, volume 22(1):1-9, 1993
The effects of six Btk cotton lines on behavior of third-instar Heliothis virescens were evaluated. Percentage of time feeding was reduced and plant abandonment increased on Btk cotton. Limited damage (0-6%) to flower buds or bolls was observed on Btk cotton compared to high damage (54-74%) on non-Btk cotton.
This study looked at target effects of Btk.