Wheat (Triticum spp.) is a crop of global significance and occupies a premier place among cereals. It is one of the most significant food crops among cereals and serves as the staple food of about 36% of the entire world population. Although wheat has a wide range of climatic adaptability, it is usually affected by many biotic factors the most devastating of which are the rust diseases. Management of rusts is, thus, the most demanding aspect of wheat production.
Yellow (stripe) rust caused by Puccinia striformis is the most devastating disease of bread wheat (Triticum aestivum) in the world. A wide range of virulent yellow rust pathotypes is evolving in different regions of the world causing the breakdown of utilized sources of resistance in wheat. Hence the knowledge of virulence factors of pathogen and effective resistance genes will enable breeders to target those useful genes in their breeding programs.