1. CSIR‐Savanna Agricultural Research Institute Tamale Ghana
2. Cocoa Research Institute of Ghana Akim Ghana
3. Department of Crop Science School of Agricultural and Consumer Sciences University of Ghana Legon Ghana
4. Department of Biology University of Virginia Charlottesville VA USA
5. Kirkhouse Trust Oxford UK
6. Department of Nematology University of California Riverside CA USA
7. Department of Botany & Plant Sciences University of California Riverside CA USA