Report of the 2011 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 17th year in 2011.  Five locations at Brookings, SD, St. Paul and Crookston, MN, Langdon, ND, and Glenlea, Manitoba, Canada were planted.

A total of 24 entries were included in the 2011 URSN, including the resistant checks 2375, BacUp, and ND2710, and the susceptible checks Wheaton and Oslo.  The other entries were contributed by 5 university and government breeding programs.

A core set of traits evaluated provided from most locations included FHB incidence, FHB severity, disease index (incidence x severity), and visual scabby kernel ratings (VSK @ tombstone @ FDK).  Additional trait data such as grain deoxynivalenol content, plot yield, and heading date, are presented in individual location summary tables.  Overall means for traits over locations are presented, as are relative rankings for incidence, severity, disease index, VSK and DON.  Correlation coefficients are provided between incidence, severity, disease index, and VSK.  Molecular marker genotypes for a set of FHB resistance QTLs and other traits are provided for entries.  Adult plant leaf and stem rust reactions are also presented.

This material is based upon work supported by the U.S. Department of Agriculture, in cooperation 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.

St. Paul, MN

March, 2011

CONTENTS                                                                                                                          PAGE

Cooperating Agencies, Stations and Personnel                                                                          1

Table 1.  List of Entries in the 2011 URSN                                                                               2

Tables 2-6.  Nursery Data by Individual Location                                                                  3-7

Table 7.  Correlations Between Traits, by Location                                                                   8

Table 8.  Trait Means Across Locations, with Rankings                                                            9

Table 9.  Correlations Between Traits Across Locations                                                          10

Table 10.  Molecular Marker Genotypes for Selected Genes and Traits                             11-12

Table 11.  Adult Plant Leaf and Stem Rust Reactions                                                             13

Cooperators for the 2011 Uniform Regional Scab Nursery for Spring Wheat Parents

North Dakota State University (Langdon):

Scott Halley

South Dakota State University (Brookings):

Karl Glover

University of Minnesota (St. Paul, Crookston):

Jim Anderson, Ruth Dill-Macky, and John Wiersma

Agri-Food Canada, Glenlea, Manitoba:

Jeannie Gilbert and Gavin Humphreys

USDA-ARS, Cereal Crops Research Unit (Fargo, ND):

Shiaoman Chao

USDA-ARS, Cereal Disease Laboratory (St. Paul, MN):

Jim Kolmer, Yue Jin