Project Number: 3622-21220-007-05
Project Type: Specific Cooperative Agreement

Start Date: May 18, 2010
End Date: Aug 31, 2013

Objective:
Develop colonies with resistance to Cry34/35Ab1 and test the effectiveness of two refuge types to delay resistance. Test the dominance and fitness costs of resistance to Bt corn.

Approach:
Western corn rootworm colonies will be selected for resistance to Cry34/35Ab1-expressing transgenic maize and resistance levels will be compared to control colonies and colonies designed to simulate a refuge. In addition, dominance of resistance will be tested by crossing resistant and susceptible colonies and evaluating progeny and fitness costs associated with resistance will also be evaluated.