Report of the 2003 Uniform Regional Scab Nursery for Spring Wheat Parents
Coordinator: David F. Garvin
USDA-ARS, Plant Science Research Unit
411 Borlaug Hall, University of Minnesota
1991 Upper Buford Circle, St. Paul, MN 55108
Report prepared by: David F. Garvin and Zachary Blankenheim
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. The Prosper ND location encountered problems and thus is not included in this annual report.
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 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.
This material is based upon work supported by the U.S. Department of Agriculture, under Agreement No. 0304-GA-087 with DFG. This is a cooperative project with the U.S. Wheat & Barley Scab Initiative. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S. Department of Agriculture.
Cooperating Agencies, Stations and Personnel 1
Table 1. List of Entries in the 2003 URSN 2
Tables 2-6. Nursery Data by Individual Location, Mist-Irigated Locations 3-7
Table 7. Trait Means Across Mist-Irrigated Locations, and Rankings 8
Tables 8-9. Nursery Data by Individual Location, Dryland Locations 9-10
Table 10. Trait Means Across Dryland Locations, and Rankings 11
Table 11. Correlation Coefficients Among Traits 12
Table 12. Correlation Coefficients, Mist-Irrigated vs. Dryland Means 13
Cooperators for the 2003 Uniform Regional Scab Nursery for Spring Wheat Parents
North Dakota State University (Prosper):
Mohamed Mergoum and Robert Stack
North Dakota Agricultural Experiment Station (Langdon):
South Dakota State University (Brookings):
University of Minnesota (St. Paul, Crookston, Barnesville):
Jim Anderson, Ruth Dill-Macky, John Wiersma, and Kent Evans
Agri-Food Canada, Winnipeg, Manitoba:
Jeannie Gilbert and Gavin Humphreys