Identification of Sainfoin Species (Onobrychis spp.) from Morphologic Characters and Flower Colour by L*a*b*, RGB and HSV Colours by Principle Component Analysis

The aim of this study, to determine similarities/dissimilarities of Onobrychis species for morphologic characters (flower diameter, days to flowering, main stem length and width, number of stem, leaflet length and width), and colour values (L*, a*, b*, R, G, B, H, S and V) by using principle component analysis. Plant materials, belonging to Onobrychis species; Onobrychis hypargyrea Boiss. (O1), Onobrychis viciifolia Scop. (O2), Onobrychis montana subsp. cadmea P.W.Ball (O3), Onobrychis armena Boiss. (O4), Onobrychis gracilis Besser (O5), Onobrychis hajastana Grossh. (O6), Onobrychis lasiostachya Boiss. (O7), Onobrychis oxyodonta Boiss. (O8) and Onobrychis podperae Širj. (O9) were collected from different locations (grassland, arable area and forest area) in Eskişehir province. According to these explanations; morphologic characters, main stem length, leaflet width and days to flowering; Lab colours, L and b; RGB colours, R and B, HSV colours, H and S were determined as best contributors. Onobrychis species, O3, O4 and O9; morphologic characters, main stem length and width leaflet length and width; colours; L, b, R, B S and V were determined as stabile species/characters. Onobrychis viciifolia Scop. (O2) with Onobrychis hajastana Grossh. (O6) and Onobrychis montana subsp. cadmea P.W.Ball (O3) with Onobrychis lasiostachya Boiss. (O7) were found as similar species.