The project sought to identify sources of resistance to the principal nematode pests of yams (Scutellonema bradys and Meloidogyne incognita) which cause dry rot and galling of yam tubers in West Africa and are a priority for yam breeders at IITA. The project focused on development of yam nematode resistance screening techniques for field and screenhouse and carried out extensive screening of germplasm from West Africa. An important aim was to achieve a better understanding of the genetic and environmental components of variability in the host: parasite interaction of yams and yam nematodes through strategic research. The project involved survey work, which examined the distribution of nematodes in Ghana and assessed farmer’s perceptions of nematode losses. It also involved field, screenhouse and glasshouse trials in Nigeria, Ghana and UK.
Plowright, R.; Kwoseh, C. Identification of resistance to major nematode pests of yams. (Dioscorea) in West Africa. Final Technical Report. CABI Bioscience, Bakeham Lane, Egham, Surrey, UK (2000) 30 pp.