2009 Annual Report 1a.Objectives (from AD-416) Identify genes controlling beta glucan content in oat. 1b.Approach (from AD-416) Association mapping in elite varieties. 3.Progress Report We carried out two sets of agronomic evaluations of oat varieties, one with elite varieties and one with more diverse germplasm. Varieties in these trials were genotyped and we carried out a preliminary round association mapping for beta glucan content using public information about beta glucan content of these varieties. Several loci putatively involved in controlling beta glucan content were identified.