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Inheritance of Reaction to Physiologic Races of Tilletia levis and T. tritici in a Ridit x Yogo Wheat Cross
Date of this Version
Thesis (M.S.)--University of Nebraska--Lincoln, 1942. Department of Agronomy.
By crossing Ridit with Yogo and inoculating the progeny separately with two certain races of bunt it was hoped that lines could be obtained which would be immune or at least highly resistant to both of these races. If such lines could be obtained they probably would be resistant to all known races of bunt. At the same time it seemed desirable to study the inheritance of resistance to bunt in the progeny of this cross and to attempt a genetic explanation of the results obtained.
Ridit is resistant to all but four known physiologic races of bunt and Yogo is resistant to all but one known race, this one being different from the four which infect Ridit. Together these two varieties carry resistance to all known physiologic races. A cross was made between Ridit and Yogo with the hope of obtaining lines which would be immune or at least highly resistant to all known races of bunt. Considerable variation in per cent of infection occurred in the seedings inoculated with each race and bunt infection at North Platte was considerably higher than at Lincoln.
Advisors: K. S. Qisenberry, Orrin J. Webster, and H. A. Rodenhiser.