Stem Rust Resistance in Durum ● Durum wheat of North America has a higher frequency of resistance to TTKSK than common wheat to TTKSK than common wheat ● We postulated that resistance to TTKSK in durum is mostly due to Sr13 ● When durum resistant selections were evaluated in Debre Zeit, many were evaluated in Debre Zeit, many became susceptible to stem rust became susceptible to stem rust ● Hypothesis: stem rust races in Debre Zeit may possess a virulence combination may possess a virulence combination that overcome the TTKSK resistance that overcome the TTKSK resistance Debre Zeit
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