Evaluation of Turkish oat landraces based on morphological and phenological traits

In a two-year study, 196 Turkish oat landraces and 3 standard cultivars ('Checota', 'Faikbey' and 'Seydisehir') were evaluated for morphological traits: germination rate, stem diameter, upper inter-node length, plant height, flag leaf width, flag leaf length, single plant biomass, lodging severity and barley yellow dwarf virus, and for phenological traits: vegetative period, grain filling period and, days to maturity. According to two years' data, all traits differed for years except germination rate. Genotypes varied for upper inter-node length, stem diameter, plant height, flag leaf width, vegetative period, grain filling period and days to maturity. In addition, year x genotype interaction was significant for stem diameter, flag leaf width, vegetative period, grain filling period and days to maturity. Traits such as flag leaf length, flag leaf width, days to maturity, vegetative period, single plant biomass and germination rate were more promising ones as selection criteria. However, lodging severity, plant height, barley yellow dwarf virus, upper inter-node length and grain filling period were more important for negative selection. Results indicate that, El A56, E7, E55, A17, E38, A40, A63, A25, A69, A26, A83, A1, A2, K11. K9, K3, K53, K30, K1 K2, K7, K5, K8, K48 and K4 were some of the genotypes in the right quadrants of the biplot with vegetative period, days to maturity, flag leaf width, flag leaf length, germination rate, single plant biomass and stem diameter traits.