Akademik Veri Yönetim Sistemi
Hacettepe Journal of Biology and Chemistry, cilt.50, sa.2, ss.99-112, 2022 (Hakemli Dergi)
A B S T R A C T
In Turkey, there are eighteen Tordylium (Apiaceae) species out of twenty in the worldwide and seven of them are endemic.
In this research, karyotypes of T. apulum, T. pestalozzae, T. syriacum, T. trachycarpum and karyotypes and chromosome
numbers of T. cappadocicum, T. aegaeum, T. hasselquistiae, T. ketenoglui (endemic), T. macropetalum (endemic), T. pustulosum
(endemic) are provided for the first time. Tordylium species are separated into five cytotypes according to chromosome
numbers as 2n=8, 16, 18, 20 and 22. Besides, idiograms of haploid chromosome set, length of the chromosome arms, arm
ratios, centromeric index, relative length and haploid karyotype formulas are given. T. ketenoglui has longest chromosome
lengths (3.39-1.66 μm) while T. aegaeum has shortest (1.10-0.59 μm). Additionally, principal component analysis (PCA) has
been performed by quantified karyological characters. PCA results show that the median type and haploid chromosome
length have significant variants among karyological characters. Also, correlation among karyological data, current infrageneric
classification and the phylogenetic hypothesis based morphological dataset of Tordylium are discussed. Karyological
characters are incompatible with current infrageneric classification, similarly with conflict between the phylogenetic hypothesis
and infrageneric classification. In the light of the phylogeny, it could be stated that the ancestral number is 2n=16.
Key Words: Cytotype, karyotype evolution, principal component analysis, Tordyliinae.