The present study was carried out to characterize twenty one oat genotypes qualitatively. These genotypes were categorized on the basis of qualitative characters. The time of ear emergence was highly variable, especially when the plant was observed at different developmental stages. Five categories were found for this trait in the mature stage, confirming the divergence among the genotypes studied regarding the diversity. For plant growth habit, majority of the genotypes were found to possess semi erectness (47%) followed by intermediate type (33%) and erect type (19 %). The descriptor flag leaf hairs on auricles, 95.2 per cent of the genotypes were not possessed this, only 4.8 percent of the genotype had this trait, this trait clearly distinguished the wild and cultivar. Thus these kinds of characters may be utilized to select the agronomically superior genotypes. The genotypes with erect and no flag leaf hairs on auricles were selected for domestication purpose. From the frequency distribution of different qualitative characters, we can infer the evolutionary significance of a particular class.