1. Race structure of cowpea witchweed (Striga gesnerioides) in West Africa and its implications for Striga resistance breeding of cowpea. Issue 2 (March 2020) Authors: Ohlson, Erik W.; Timko, Michael P. Journal: Weed science Issue: Volume 68:Issue 2(2020) Page Start: 125 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗