Submitted to: Phytopathology
Publication Acceptance Date: May 1, 2004
Publication Date: July 31, 2004
Citation: Oelke, L.M., Kolmer, J.A. 2004. Identification Of Rust Resistance Genes In Four Spring Wheats. Phytopathology.

Technical Abstract: Leaf rust of wheat (Puccinia triticina Eriks.) is the most common and wide spread pathogen of wheat worldwide. Four important varieties of spring wheat in the upper Midwest, 'Alsen', 'Norm', 'Ivan' and 'Knudson', were characterized for seedling and adult plant resistance to leaf rust using BCF2 families in both field and greenhouse conditions. All four varieties have good field resistance to leaf rust. 'Alsen' is widely grown in Minnesota, South Dakota and North Dakota because of it has scab resistance. 'Alsen' has Lr2a, Lr10 and is likely heterogeneous for Lr16. 'Norm' has Lr1, Lr10 and Lr16. 'Norm' may also have Lr23. Both 'Alsen' and 'Norm' have Lr13 and Lr34adult plant resistance genes. 'Knudson' has Lr16 and 'Ivan' has Lr16 and Lr24, plus additional seedling resistance genes. 'Knudson' has Lr13 and Lr34 adult plant resistance genes. 'Ivan' has Lr34 adult plant resistance gene.