Tongoona, Pangirayi.Derera, John.Sibiya, Julia.20092009http://hdl.handle.net/10413/8136Thesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2009.Abstract not available.Maize--Diseases and pests--Africa.Maize--Disease and pest resistance--Genetic aspects.Maize--Breeding--Africa.Maize--Africa--Genetics.Maize--Varieties--Africa.Maize--Yields--Africa.Plant breeding--Research--Africa.Selection (Plant breeding)--Africa.Farms, Small--Africa.Theses--Plant breeding.Breeding investigations for resistance to Phaeosphaeria Leaf Spot (PLS) and other important foliar diseases and a study of yield stability in African maize germplasm.