Cytogenetical Analyses of some species of the genus Sisymbrium (Brassicaceae) in Turkey

In this study, karyotype analyses of three species belonging to the genus Sisymbrium L. (Brassicaceae) and grown naturally in Turkey were conducted. These taxa are S. officinale (L.) Scop., S. runcinatum Lag. ex DC. and S. orientale L. The somatic chromosome number of 2n = 14 was reported for all species. Total chromosome lengths are between 1.33 and 2.43 μm in S. officinale, 1.30 and 2.48 μm in S. orientale, 1.02 and 2.18 μm in S. runcinatum. The karyotypes are as follows: S. officinale consists of 12m + 2sm, S. orientale consists of 10m + 4sm and S. runcinatum consists of 10m + 4sm chromosome pairs. S. runcinatum is the most asymmetrical karyotype based on all index values