Karyological and cytotaxonomy invesgation on some Cirsium miller (Asteraceae) species growing in Turkey

In this study, karyologic properties of six species of Cirsium genus?s (C. sipyleum O.Schwarz., C.arvense (L.) Scop., C. libanoticum DC. subsp. arachnoideum Davis & Parris, C.alatum (Gmelin) Bobrov. subsp. alatum, C.creticum (Lam.) d?Urv. subsp. creticum, C. leucopsis DC.) which are grown in Turkey, were investigated. Seeds of the examined species were benefited from for chromosome studies. In consequence of the studies performed in divisible somatic cells, chromosome counts and karyotype analyses of species were done and idiograms were generated. It is found that among species chromosome number for C.sipyleum, C.arvense, C.libanoticum, C.alatum, C.creticum and C.leucopsis is 2n=34. It is confirmed that the chromosomes are median point (M), median region (m), submedian (sm) or subterminal (st) centromeres.