Submitted to: Uniform Regional Scab Nursery for Spring Wheat Parents
Publication Type: Other
Publication Acceptance Date: February 2, 2005
Publication Date: February 2, 2005
Citation: Garvin, D.F., Blankenheim, Z. 2005. Report of the 2004 Uniform Regional Scab Nursery for Spring Wheat Parents. 13 p. Available: http://wheat.pw.usda.gov/GG2/index.shtml. Technical Abstract: The Uniform Regional Scab Nursery for Spring Wheat Parents (URSN) was grown for the 10th year in 2004. 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 Crookston, MN, were planted in 2004. The Glenlea location encountered problems and thus is not included in this annual report. A total of 45 entries were included in the 2004 URSN, including the resistant checks 2375, BacUp, and ND2710, and the susceptible checks Wheaton and Oslo. The other 40 entries were contributed by university, industry, or national breeding programs. Four 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 the relevant 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.