On-going monitoring of resistance evolution in Helicoverpa zea to Bt toxins in the Carolinas

Sunday, November 10, 2024

10:50 AM – 11:05 AM MST

Location: Phoenix Convention Center, 127 A, PCC

Presenting Author(s)

TB

Tim Bryant

Virginia Tech University
Suffolk, Virginia

Co-Author(s)

JG

Jeremy Greene

Clemson University
Blackville, South Carolina
Dominic Reisig

Professor and Extension Specialist
North Carolina State University
Plymouth, North Carolina
FR

Francis P.F. Reay-Jones

Professor
Clemson University
Florence, South Carolina

Corn earworm is the most common insect pest of field corn in the southeastern U.S. targeted by Bacillus thuringiensis (Bt) toxins expressed in transgenic corn. While it is generally not considered to be an economic pest of field corn, corn earworm is a major pest of cotton. Selection pressure in Bt corn is driving resistance evolution, leading to issues in Bt cotton. Data will be presented from field and lab studies in North and South Carolina to quantify the extent of resistance in corn earworm to Bt.