Evaluation location: Washington, United States
Wheat Stripe Rust Field Evaluation. Mt. Vernon, Washington. Natural infection. Planted fall 2004. Final disease rating May 24, 2005 (heading 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 #167315)