Symmetrical karyotypes

In this study, the karyomorphology of 20 Turkish Centaurea (subgenus Cyanus) taxa was examined. The number of chromosomes of 11 taxa belonging to the subgenus Cyanus was determined for the first time. As a result of the karyomorphological studies, the number of basic chromosomes was determined to be x = 8, 10, and 12 in annuals and x = 10 and 11 in perennials. The populations are tetraploid in the seven perennial taxa and polyploidy is not rare for this group. On the other hand, all annual taxa are diploid.

13p tudichquannguyet 29-11-2021 4 1   Download

Chromosomal data can provide very valuable information about karyotypic phylogeny and speciation. This is the first study on karyotype phylogeny and polyploidy variations of the genus Paronychia.

10p tudichquannguyet 29-11-2021 18 2   Download

Chromosomal data are valuable and very useful for revealing evolution and speciation processes. Due to its wide distribution throughout the world, morphological differences, and chromosomal alterations, Erodium L’Hér. is an important genus for investigating the relationship between chromosomal alterations and karyotype evolution. In the present study, the chromosome records of 15 taxa are provided; three are reported here for the first time (E. birandianum, E. gaillardotii, and E. hendrikii), seven present new chromosome numbers, and five are in agreement with previous reports.

14p tudichquannguyet 29-11-2021 14 1   Download