Submitted to: Uniform Regional Scab Nursery for Spring Wheat Parents
Publication Type: Other
Publication Acceptance Date: February 27, 2004
Publication Date: February 27, 2004
Citation: Garvin, D.F., Blankenheim, Z. 2004. Report of the 2003 Uniform Regional Scab Nursery for Spring Wheat Parents. 14 p. Available: http://wheat.pw.usda.gov and http://www.scabusa.org/ Technical Abstract: The Uniform Regional Scab Nursery for Spring Wheat Parents (URSN) was grown for the 9th year in 2003. Six mist-irrigated locations at Brookings, SD, St. Paul, and Crookston, MN, Prosper and Langdon, ND, and Glenlea, Manitoba, Canada, and two locations where supplemental mist irrigation was not used ("dryland screening locations") at St. Paul and Barnesville, MN, were represented in the 2003 URSN. A total of 41 entries were included in the 2003 URSN, including the resistant checks 2375, BacUp, and ND2710, and the susceptible checks Wheaton and Oslo. The other 36 entries were contributed by university, industry, or national breeding programs. Five of these entries were durums, and five were USDA PI genotypes that are possible new sources of scab resistance. A core set of traits evaluated provided from most locations included incidence of scab, scab severity, disease index, and visual scabby kernel ratings (VSK/tombstone). Additional recorded trait data are presented in individual location tables. Overall means for traits across locations are presented, as are relative rankings for scab incidence, severity, disease index, and VSK. Correlation coefficients are provided between scab incidence and severity, disease index, VSK, and DON.