New chromosomal data of the genus Dianthus section Dentati (Caryophyllaceae, Sileneae)

Abstract

In section Dentati, the chromosome numbers were reported from only eight of 30 taxa. There is no chromosomal record relating to the other 22 taxa. In the present study, it is intended to detect the chromosome numbers of section Dentati taxa. Chromosome numbers of 15 taxa were obtained, 13 of which were reported for the first time and two numbers agreed with the previous reports. 14 taxa were diploid with 2x = 30 and only one taxon was polyploid with 4x = 60. Polyploidy might have played a role in the karyotype evolution of the genus. Although polyploidy was seen, there was no dysploidy causing to change in the basic chromosome number. According to all chromosomal data on Dianthus, the basic chromosome number was only one (x = 15). In conclusion, this study presents new data into the karyological characteristics of section Dentati (genus Dianthus) that may be useful for understanding or interpreting relationships among the sections.

Keywords

• Chromosome
• cytotaxonomy
• Caryophyllaceae
• Dianthus
• Dentati

Dianthus cinsi Dentati seksiyonunun (Caryophyllaceae, Sileneae) yeni kromozomal verileri

Abstract

Dentati seksiyonunda, toplam 30 taksonun sadece sekizinin kromozom sayıları rapor edilmiştir. Diğer 22 taksona ait kromozomal kayıt bulunmamaktadır. Bu çalışmada, Dentati seksiyonu taksonlarının kromozom sayılarının tespit edilmesi amaçlanmıştır. On üçü ilk kez rapor edilen, iki tanesi de önceki raporlarla uyumlu olan 15 taksonun kromozom sayısı elde edilmiştir. 14 takson 2x = 30 ile diploid ve sadece bir takson 4x = 60 ile poliploiddir. Poliploidi, cinsin karyotip evriminde rol oynamış olabilir. Poliploidi görülmesine rağmen, temel kromozom sayısını değiştirmeye neden olan disploidi yoktur. Dianthus'taki tüm kromozomal verilere göre, temel kromozom sayısı yalnızca bir tanedir (x = 15). Sonuç olarak, bu çalışma, Dentati (cins Dianthus) seksiyonunun karyolojik özelliklerine, seksiyonlar arasındaki ilişkileri anlamak veya yorumlamak için faydalı olabilecek yeni veriler sunmaktadır.

Keywords

• Caryophyllaceae
• Dianthus
• Dentati
• kromozom
• sitotaksonomi

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