OAT SNP DEVELOPMENT AND IDENTIFICATION OF LOCI AFFECTING KEY TRAITS IN NORTH AMERICAN OAT GERMPLASM____CROWN RUST TESTING
Small Grains and Potato Germplasm Research
2011 Annual Report
1a.Objectives (from AD-416)
Conduct a two year multi-location association mapping study to develop marker-trait associations to facilitate the development of new oat varieties with superior crown rust resistance.
1b.Approach (from AD-416)
Single row plots for all spring and CORE association lines will be grown in randomized complete block design with two replications. Disease severity data based on reactions to field isolates will be collected at the appropriate time. All data will be collected and analyzed for marker trait associations.
Over the past 48 years world-wide oat production has declined 58%, while production of crops like corn and soybean have drastically increased. Research groups in North America actively working on oat have also declined from 28 (1998) to 11 (2008). The Collaborative Oat Research Enterprise was recently established by the USDA-ARS in Aberdeen, Idaho as an international scientific collaboration to reverse these trends. As part of the project, ARS Aberdeen enlisted the help of the Cornell University breeding program to evaluate 685 oat lines for key agronomic characteristics. Over the last year (2010 – 2011), field evaluations have yielded key information enabling the development of genetic “signpost” for plant height, lodging, and yield. To date, signpost have been developed and are being used by North American breeding program as a genetic “GPS” to expedite the development of oat varieties with proper plant height and lodging resistance. This work will allow target development of high beta glucan lines possible in oat. This work directly relates to objective 1 of the current ARS Aberdeen project plan (5366-21000-024-00D) “Develop improved barley and oat cultivars meeting the needs of conventional and specialty markets for both dryland and irrigated production systems”, and will allow target development of high beta glucan lines possible in oat. Monitoring of the project is accomplished via site visits, phone conversations, e-mail, and written reports.