Submitted to: Cereal Rusts and Mildews Conference European and Mediterranean Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 6/1/2004
Publication Date: 7/1/2004
Citation: Chen, X. 2004. Epidemiology of barley stripe rust and races of puccinia striiformis f. sp. hordei: the first decade in the united states. 11th International Cereal Rusts and Mildews Conference European and Mediterranean Proceedings. Page A2.8.
Technical Abstract: In the United States, barley stripe rust, caused by Puccinia striiformis f. sp. hordei, has spread in the south central and western United States and has caused localized damages in California and the Pacific Northwest since it was first reported in southern Texas in 1991. Barley stripe rust has been monitored using trap nurseries and field survey. Sixty-nine races of P. striiformis f. sp. hordei have been identified using a set of 12 barley genotypes. Races that were detected in California and/or Texas were also detected in the Pacific Northwest, indicating the spread of the races among the different regions and lack of selection from cultivars grown in various regions. Races with a relatively narrow virulence spectrum tended to become predominant. Major barley cultivars with non-race specific high-temperature, adult-plant resistance and the barley cropping system have played significant roles in reduction of damage by barley stripe rust.