Karyotype report for eight <i>Euphorbia</i> taxa cultivated in Turkey

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  • Kürşat Murat
    Bitlis Eren University, Faculty of Arts and Sciences, Department of Biology
  • Gedik Osman
    Kahramanmaras Sutcu Imam University, Faculty of Agriculture, Department of Field Crops
  • Emre Irfan
    Firat University, Department of Basic Education, Faculty of Education

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<p>The purpose of this work is to identify chromosomal numbers and various karyological characteristics of eight Euphorbia taxa grown in Turkey (E. heteradena Jaub. & Spach, E. altissima Boiss. var. altissima, E. macroclada Boiss., E. orientalis L., E. cheiradenia Boiss. & Hohen., E. seguieriana Neck. subsp. sequieriana, E. aleppica L., and E. chamaesyce L.). It was discovered that the Euphorbia taxa’s basic chromosome numbers were x=8, 9, 10, and 11. This work determined the Stebbins classification, ploidy levels, karyotype formula, chromosomal length range, total karyotype length, various karyotype asymmetry values, and the A1 and A2 in each taxon. In addition, the dispersion diagram was created using A1 and A2. Euphorbia taxa were revealed 2n=16 or 18 chromosomes apart from E. aleppica has 2n=20 and, E.chamaesyce has 2n=44, is polyploid. Also, they have median and submedian centromeric chromosomes. According to Stebbins classification, E. heteradena is 3A, E. altissima var. altissima, and E. orientalis are 2B, and the remaining species are 2A.</p>

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