Evaluation location: Washington, United States
Wheat Stripe Rust Field Evaluation. Whitlow Farm near Pullman, Washington. Natural infection. Planted spring 2005. Final disease rating July 5, 2005 (flowering stage). Infection type (IT) of the basic scale (2, 5, 8) in the 0-9 scale was used. IT 2 (resistant) included IT 0 (no visible symptom or signs), IT 1 (necrotic and/or chlorotic flecks; no sporulation), IT 2 (necrotic and/or chlorotic blotches or stripes; no sporulation) and IT 3 (Necrotic and/or chlorotic blotches or stripes; trace sporulation); IT 5 (intermediate) included IT 4 (necrotic and/or chlorotic blotches or stripes; light sporulation), IT 5 (necrotic and/or chlorotic blotches or stripes, intermediate sporulation) and IT 6 (necrotic ana/or chlorotic blotches or stripes; moderate sporulation); and IT 8 (susceptible) included IT 7 (necrotic and/or chlorotic blotches or stripes; abundant sporulation), IT 8 (chlorosis behind sporulating area; abundant sporulation) and IT 9 (no necrosis or chlorosis; abundant sporulation) of the expended 0-9 scale. (Order #170880)