Türkiye Centaurea pseudoscabiosa Boiss. & Buhse (yamankavgalaz) Alt Taksonlarında Karyotip Analizleri

Abstract

Abstract: In this study, karyotypes of six different populations of sub-taxa belonging to Centaurea pseudoscabiosa Boiss. & Buhse were investigated by aceto-orcein method. All populations have the same chromosome number (2n=22) and basic chromosome number (x=11). Karyotypes of sub-taxa C. pseudoscabiosa subsp. pseudoscabiosa and subsp. araratica, C. pseudoscabiosa var. sipikorensis, and C. pseudoscabiosa subsp. glehnii has been identified as 22m, 20m+2sm and 16m + 6sm, respectively. Five quantitative asymmetric indices were used to evaluate the karyological characteristics of sub-taxa. According to the asymmetry indices, C. pseudoscabiosa subsp. glehnii has the most asymmetric chromosomes (CVCI:10, AI:1.8). From a taxonomic point of view, karyological data confirm the previous subspecies classification of C. pseudoscabiosa. In addition, the karyological results support the necessity of reviving the taxon C. pseudoscabiosa var. sipikorensis, which is accepted as a synonym in the Flora of Turkey, with a new taxonomic arrangement as a subspecies.