Inheritance of Reaction Torhyinchosporium Secalisin Barley

F1and F2barley plants from crosses of eight resistant varieties with a susceptible one were tested for reaction to an Alberta isolate of Rhynchosporium secalis (Oud.) Davis. A dominant gene was responsible for resistance in seven of the varieties. Furthermore, the same gene appeared to be common to all seven. In the eighth variety, Nigrinudum, a recessive gene governed resistance. This gene was designated rh8. The variety Turk carrying the Rh3 gene was crossed with a number of linkage testers and interchange stocks. It was confirmed that the Rh3 gene is located on chromosome. 3.