1. Department of Crop and Soil Science; Oregon State University; Corvallis OR 97331 USA
2. Programa Nacional de Cultivos de Secano; Instituto Nacional de Investigación Agropecuaria; INIA La Estanzuela; Ruta 50 km 11 Colonia 70000 Uruguay
3. Department of Plant Pathology; Washington State University; Pullman WA 99164-6430 USA
4. Wheat Research; Limagrain Cereal Seeds; 3515 Richards Lake Road Fort Collins CO 80524 USA
5. Department of Botany and Plant Pathology; Oregon State University; 2082 Cordley Hall Corvallis OR 97331-2902 USA