Table 4. Adult field reaction to rust on uniform regional hard red spring wheat entries, in the 1972 Fargo rust nursery. (North Dakota-ARS). Seeded: June 1, 1972 Percent severity and reaction 1 Variety or ------------------------------ State No. Leaf rust 2 Stem rust 3 -------------------------------------------------------------------------- MARQUIS 50S 40S,O JUSTIN 20S 0 SELKIRK 25S-20MR O,tS CHRIS 25MS-5MR 0 WALDRON tMS O,tS ND491 tMS 5MR* ND506 tMS 5MR* ND507 tR O,tMS ND509 5S 0 ND511 tMR tMR* ND515 5S 5MR* ND510 tR 5MR* RL4238 30S-lOMR O,tS* MT661718 50S 0 ERA** 10MS-10MR, 0 II-64-27** tR 0 II-64-33** 1OR 0 MN6601** 10R-5MS 0 ND497** O-tMS 0 ND499** tR 0 ND508** 0 0 MT7042** 50S 0,tS FBAO04** 0 0 FBW406** tR 0 FBW434** 10R tMR* PROTOR** 30R-5MS 5MR* H678-1-6-9** 10s tMS-0 H689-5-5 30S ts-0 ---------------------------------------------------------------------- ** Semidwarf 1 = Coma - Separation of plants into 2 or more reaction classes. Segregation or seed mixture. Dash - Range in reaction on each plant. Range in severity between plants but same reaction class. 2 = Natural inoculum. Readings made on flag leaf and flag leaf minus 1. Most entries were in the soft dough stage of plant development. 3 = Natural inoculum in addition to inoculations of race 15B. Readings were made when most entries were in the soft dough stage of plant development. * Rust on neck and/or near nodes. NOTE: 1 - Late planting of spreader rows shortened the period for rust development. 2 - High temperature in August forced plants to maturity. This may have affected the stem rust severity on susceptible entries.