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.


CONTENTS                                                                                                                           PAGE


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

Click here for Table files

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):

John Lukach



South Dakota State University (Brookings):

Karl Glover



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