Working Document Series Open Access Evaluation of polymorphisms among South African winter wheat varieties M. Chemonges · L. Herselman · Z.A. Pretorius · B. Visser Wheat production globally is constrained by among other factors stem rust. Stem rust is a major disease of wheat that can result in up to 100% yield losses. Though stem rust had been managed before using host resistance genes, most of thes… RUF-36273 2016 CC BY 4.0 19 Oct 2016