2014-10-282014-10-281956https://hdl.handle.net/10365/24212The serious threat to the North Dakota wheat crop from 'stem rust' after 1950, when Race 15B became established in the wheat producing areas, resulted in greatly expanded breeding and testing programs to find sources for resistance to this new race, and to incorporate this resistance into suitable varieties, became a major objective of plant breeders. New varieties of durum which showed the promise considerable resistance to 15B were developed. The expanded and 'stepped up' program was a cooperative effort. and this is described along with research.North Dakota State UniversityArticle