2007 Annual Report 1a.Objectives (from AD-416) Our objectives are to Identify molecular markers associated with sources of resistance to FHB in wheat and to conduct genetic studies on the inheritance and relationships among FHB resistance genes. 1b.Approach (from AD-416) Several sources of resistance to FHB have been identified and some of those have been mapped with molecular markers. The most commonly used source of resistance in derived from Sumai3. We will conduct molecular analysis using resistance gene analog and microsatelite markers to determine genetic similarities among various sources of FHB resistance. We will continue to map FHBresistance and milling and baking quality in a cross derived from ND2603/Buute86. In collaboration with North Dakota State Univeristy, we will idetnify agronomic traits segregating in a population with resistance derived from Wangshubai. In collaboration with Ohio State University, we will continue to map resistance to FHB derived from Freedom soft red winter wheat. Our goal is to identify molecular markers for FHB resistance that can be used to improve the resistance to that disease in wheat genotypes that have good agronomic characteristics and good milling and baking quality. Documents Trust with. N. American Miller's Association. Log 24129. Formerly 5348-21000-016-09T (9/03). 3.Progress Report This report serves to document research conducted under a specific cooperative agreement between ARS and the National Milling and Baking Association. Additional details of research can be found in the report for parent CRIS PROJECT NUMBER: 5348-21220-003-00D, IDENTIFICATION AND DEPLOYMENT OF GENES TO REDUCE PRODUCTION RISKS AND IMPROVE QUALITY IN CLUB AND SOFT WHITE WINTER WHEAT. Molecular markers for resistance to Fusarium head blight and Fusarium crown rot are being evaluated. The published markers for resistance to FHB on chromosome 3BS have been used to evaluate germplasm from South Idaho and populations segregating for resistance to Fusarium crown rot have been developed and will be evaluated in greenhouse assays and in the genotyping laboratory. This work is being accomplished by Dr. Lesley Murphy with the assistance of Dr. Deven See and Dr. Kim Garland Campbell. Use of marker assisted selection for Fusarium resistance will provide breeders and growers with improved resistant germplasm. Progress on the collaborative project is monitored through monthly meetings with other scientists and through emails containing data and photographs.