Introgression of rpg4/Rpg5 Into Barley Germplasm Provides Insights Into the Genetics of Resistance to Puccinia graminis f. sp. tritici Race TTKSK and Resources for Developing Resistant Cultivars. - Hernandez J; Steffenson BJ; Filichkin T; Fisk SP; Helgerson L; Meints B; Vining KJ; Marshall D; Del Blanco A; Chen X; Hayes PM (Phytopathology, 2019)