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    Chromosome numbers of species of the genus Jurinea Cass. (Asteraceae) in Turkey
    (UNIV FLORENCE BOTANY INST, 2009) Bekir, Dogan; Duran, Ahmet; Martin, Esra; Hakki, Erdogan Esref
    Chromosome numbers of 13 Jurinea species, collected from different localities in Turkey, were determined for the first time. All the Jurinea species investigated were diploid with chromosome numbers counted as 2n = 34. The basic chromosome number of the genus was x = 17. In this study, polyploidy was determined in nine taxa of Jurinea. Polyploid cells were 2n = 4x = 68 and they were tetraploid. The mitotic metaphase plates were given all the taxa of Jurinea. The research has made contribution to the cytotaxonomic revision of the genus Jurinea in Turkey.
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    CYTOGENETICAL ANALYSIS OF 12 TAXA OF GENISTA L. (FABACEAE) FROM TURKEY
    (BANGLADESH ASSOC PLANT TAXONOMISTS, 2009) Martin, Esra; Dinc, Muhittin; Duran, Ahmet; Dogan, Bekir; Hakki, Erdogan E.
    In this study, cytogenetical analyses of 12 taxa belonging to the genus Genista L. and grown naturally in Turkey were conducted. These taxa include G. acanthoclada, G albida, G. anatolica, G. aucheri, G. burdurensis, G. carinalis, G. involucrata, G. januensis subsp. lydia, G. sandrasica, G sessilifolia, G. tinctoria and G. vuralii. Chromosome numbers of all the taxa, except G. tinctoria, are introduced to the scientific community for the first time. Somatic metaphase chromosomes of the genus were determined as 2n = 18, 36, 46, 48, 52, 72 and 144. Polyploidy was observed in the cells of G. albida (2n = 18, 2n = 4x = 36), G. tinctoria (2n = 36, 48, 2n = 4x = 96), G. januensis subsp. lydia (2n = 46, 2n = 4x = 92), G. burdurensis and G. sessilifolia (2n = 48, 2n = 4x = 96). Somatic chromosomes of the G. sandrasica are very small, thus exact ploidy level of polyploidy was not determined. Karyotype analysis of G. albida and G involucrata were performed via an Image Analysis System.
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    Karyology of the Scorzonera L. (Asteraceae) taxa from Turkey
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2012) Martin, Esra; Cetin, Ozlem; Makbul, Serdar; Duran, Ahmet; Ozturk, Meryem; Boduroglu, Derya; Esmekaya, Bahriye
    In this study, the karyotypes of 13 taxa of the tribe Lactuceae growing naturally in Turkey were examined. Of the species of the genus Scorzonera L. (Asteraceae), S. laciniata L. subsp. laciniata, S. cana (C.A.Mey.) Hoffm. var. jacquiniana (W.Koch) Chamb., S. suberosa C.Koch subsp. suberosa, S. moths M.Bieb. subsp. mollis, S. papposa DC., S. lacera Boiss. & Bal., S. elata Boiss., and S. parviflora Jacq. have a diploid chromosome number of 2n = 14. For S. phaeopappa (Boiss.) Boiss., this number is 2n = 28, and for S. eriophora DC., S. pseudolanata Grossh., S. tomentosa L., and S. kotschyi Boiss., it is 2n = 12. The average chromosome length of the taxa examined was between 1.20 and 7.63 mu m. All of the taxa have median and submedian chromosome pairs in their chromosome morphologies. With the exception of S. parviflora, the chromosome morphologies of the taxa examined are presented here for the first time.
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    Karyomorphological Study of Eight Centaurea L. Taxa (Asteraceae) from Turkey
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2009) Martin, Esra; Dinc, Muhittin; Duran, Ahmet
    Centaurea L. (Asteraceae) is one of the largest genera in Turkey. The chromosome number and morphology of 8 taxa belonging to the genus Centaurea were investigated using an image analysis system. Among these taxa, the chromosome numbers were as follows: 2n = 18 in C. cariensis Boiss. subsp. niveotomentosa (Hub.-Mor.) Wagenitz, C. lycaonica Boiss. & Heldr., C. virgata Lam.. and C. Polyclada DC.; 2n = 24 in C. cyanus L.; 2n = 36 in C. virgata and C. cariensis Boiss. subsp. cariensis: 2n = 40 in C. urvillei DC. subsp. urvillei; 2n = 54 in C. tuzgoluensis Aytac & H.Duman. In 5 taxa mixoploidy was observed (C. lycaonica, C urvillei subsp. urvillei, C cariensis subsp. cariensis, C. virgata. and C. tuzgoluensis). Based on karyotypic data for this genus, 3 basic chromosome numbers in Centaurea taxa were observed (x = 9. 10. and 12). Furthermore, ideograms are given for all the Centaurea taxa studied.
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    Phylogenetic relationship analysis of Genista L. (Fabaceae) species from Turkey as revealed by inter-simple sequence repeat amplification
    (ACADEMIC JOURNALS, 2010) Hakki, Erdogan E.; Dogan, Bekir; Duran, Ahmet; Martin, Esra; Dinc, Muhittin
    Genista L. (Fabaceae) is distributed in Europe, South Africa, and West Asia and consists of almost 90 species in the world. Thirteen species of the genus are distributed in Turkey. Taxonomic problems of the species started to be resolved with recently developed DNA-based molecular methods. These methods, in contrast to phenotypical analyses, are free from the effects of environmental conditions. In this study, DNA of the species which belong to the Genista genus, grown naturally in Turkey and collected from the different localities, were isolated with a commercial kit. Inter-simple sequence repeat (ISSR) is a simple molecular marker system that provides reliable results. Based on ISSR data, genetic similarities and dendrogram demonstrating the phylogenetic relationships among the Genista taxa were prepared by the NTSYSpc 2.0 software. In this study, infrageneric classifications of the Genista taxa belonging to the Flora of Turkey were conducted based on molecular data. ISSR analysis strongly supported the hypothesis that G. aucheri is accepted as the synonym of G. sessilifolia.