TABLE 4-2 Adult stem rust reactions of entries in the 1979 Uniform Regional Hard Red Spring Wheat Nursery [USDA-SEA AR, NDSU, (Miller-Statler)] Percent Severity and Reaction l Av. 2 Entry Fargo Oakes Minot Carrington Langdon C.I. ----------------------------------------------------------------------------------------------------- Marquis 30MS-10S 0 0-ts 0 0 4.8 Chris 0 0 0 0 0 0.0 Waldron 0,5MS 0 0 0 0 0.0 ND550 5R-tMR 0 0 0 0 0.2 ND565 5R 0 0 0 0 0.2 ND567 tR 0 0 0 0 0.1 ND570 0 0 0 0 0 0.0 ND571 5R 0 0 0 0 0.2 SD2355 5R 0 0 0 0 0.2 SD2256 5R- tMS 0 0 0 0 0.2 MT7648 10MS-15S 0 0 0 0 1.6 MT7635 tR 0 0 0 0 0.1 RL4314 5R-10MS-tS 0 0 0 0 0.2 Butte 5R 0 0 0 0 0.2 Era ts-tMS 0 0 0 0 0.5 MN7324 tR-tMR 0 0 0 0 0.5 MN73168 5MR-tMS 0 0 0 0 0.4 MN7222 5MS-tS 0 0 0 0 0.8 MN7336 0 0 0 0 0 0.0 MN7378 tMS-tR 0 0 0 0 0.4 NK75S5511-4 5S 0 0 0 0 1.0 NHS183-74 25M 0 0 0 0 3.0 NHS1001-75 10MS 0 0 0 0 1.6 WA6307 5MS-tS,30S 0 0 0 0 0.8 WA6510 40S 0 0 0 0 8.0 WA6511 20S 0 0 0 0 4.0 ND569 0 0 0 0 0 0.0 WSMP122 tMS-ts 0 0 0 0 0.4 Seeded - Fargo - May 21, Oakes - May 22 (overhead irrigation), Minot - May 23, Carrington - May 23 (flood irrigation), Langdon - May 24. 1 = Comma Separation of plants into 2 or more reaction classes (segregation or seed mixture). Dash Range in reaction on each plant or range in severity between plants with same reactions. Natural inoculum - Additional inoculations of races 15B (TLM) and 151 (QSH) at Fargo. Readings at soft dough to mid dough stages. 2 = Av. C.I. - Average coefficient of infection is the average of the 5 coefficients of infection for each entry. Coefficient of infection for each reading was determined by multiplying percent severity by reaction where resistant (R) = 0.2, moderately resistant (MR) = 0.4, intermediate (M) = 0.6, moderately susceptible (MS) = 0.8 and susceptible (S) = 1.0. When a double reading occurred, only the percent severity and the response preceding the comma or dash was used to determine the coefficient. Trace severity (t) = 2.5 percent.