Table 4-1 Adult stem rust reactions of entries in the 1993 Uniform Regional Hard Red Spring Wheat Nursery. [USDA-ARS, NDSU (Miller-Rasmussen)]. Percent Severity and Reaction 1 Entry Cultivar or ------------------------------- Number Line Fargo Carrington Langdon -------------------------------------------------------- 1 Marquis 10-40M 10-20M t-10MSS 2 Chris 0,25M 0 0 3 Era 0 0 0 4 Stoa 0 0 0 5 Butte 86 tR* 0 0 6 SD 8072 5R* 0 0 7 SD 8073 0 0 0 8 SD 8070 10-25RMR 0 t-20R* 9 SD 0005 0 0 0 10 SD 0010 tR* 0 0 11 MN 89103 tR* 0 0 12 MN 90071 0 0 0 13 MN 90114 0 0 0 14 MN 90253 tR* 0 0 15 SBE 0437 0 0 0 16 SBE 0444 0 0 0 17 ND 671 0 0 0 18 ND 673 5RMR 0 5R 19 ND 674 5R 0 tR 20 ND 677 0 0 0 21 ND 678 0 0 0 22 XW 398A4 0 0 0 23 N86-0348 0 0 0 24 N90-0666 5MRR 0 0 25 N90-0671 5-15M 0 0 26 N90-0700 20M 0 0 27 N88-3140 0 0 0 28 MT 8849 40-50MSS 20-25MS 25MRMS 29 BW 152 0 0 0 30 8601AE 3C 0 0 0 31 BZ 988-351 20RMR 0 0 32 BZ 984-334 15RMR 0 0,20R* Date of Planting: Fargo 5/12/73; Carrington 5/5/93, Langdon 5/6/93. Natural inoculum: plus additional inoculations of races CRL-15TLM, -15TNMK, -113RTQ, -151QFB and -151QSH at Fargo. Reading - made at dough stage. Comma - separation of plants into two or more reaction classes (segregation or seed mixture). Dash - Range in severity between plants with same reaction. *Infection only on peduncle. Hyperparasites and toxin produced by Helminthospotium sativum may have contributed to the reduced spread and severity of stem rust at these three locations.