2006 Annual Report 4d.Progress report. This report serves to document research conducted under a reimbursable agreement between ARS and NRI-CGP, CSREES. The objectives were in support of the long-term goal of the parent CRIS, 5348-21220-003-00D, Identification and Deployment of Genes to Reduce Production Risks and Improve Quality in Club and Soft White Winter Wheat. Quantitative trait loci (QTLs) for cold tolerance and vernalization requirement have been identified in two winter wheat populations, Norstar/Centurk78 and Karl/Z0031. QTLs on chromosomes 5A have been identified in both populations that overlap the region containing CBF gene homologues that are associated with cold tolerance in other species. The problem being addressed is identification of genetic factors conferring winter hardiness in winter wheat. The work is being accomplished by one WSU graduate student in Dr. Garland Campbell's laboratory. The QTLs will be used to select for more cold tolerant winter wheat.