What is the right number of testers?
Hybrid breeding aims to keep and increase the non-additive interactions in the final products while increasing the additive genetic value in a recurrent selection program.
The following simulation reports and retrospective analyses explore questions such as how many testers should be used to capture the general combining ability (GCA) that maximizes additive and non-additive effects.
Contact: d.gemenet@cgiar.org
Presentation
Optimal number of testers for the CIMMYT East Africa Maize Program
Simulations to identify the optimal number of testers with highest correlation.
Presentation
Optimal number of testers for the CIP sweetpotato in Uganda breeding program
Simulations show that 2-5 testers is optimal.