Other language title :
مطالعه كاريوتيپي و گزارش عدد كروموزومي جديد در برخي گونه هاي سرده فرفيون، تيره Euphorbiaceae در ايران
Title of article :
KARYOTYPE ANALYSIS AND NEW CHROMOSOME NUMBERS OF SOME SPECIES OF EUPHORBIA L. (EUPHORBIACEAE) IN IRAN
Author/Authors :
Fasihi, J Department of Plant Science - School of Biology - College of Science - University of Tehran , Zarre, S Center of Excellence of Living Organisms in Iran - Department of Plant Science - School of Biology - College of Science - University of Tehran , Azani, N Department of Plant Science - School of Biology - College of Science - University of Tehran , Salmaki, Y Center of Excellence of Living Organisms in Iran - Department of Plant Science - School of Biology - College of Science - University of Tehran
Abstract :
The somatic chromosome numbers and karyotype features of 15 species of Euphorbia (Euphorbiaceae) from Iran
were analyzed. The chromosome counts of four species including E. inderiensis (2n=18), E. polycaulis (2n=18), E.
phymatosperma (2n=16) and E. gypsicola (2n=54) are reported for the first time, while the chromosome number of
11 more studied species are confirmed. We also confirm the occurrence of two different cytotypes in E.
microsciadia: one diploid (2n=18) and the other tetraploid (2n=36). The karyotypes are often symmetrical
composing mainly of metacentric and submetacentric chromosomes. The results also confirm the presence of
different basic chromosome numbers including x= 7, 8, 9 and 10 within the genus, indicating the potential
evolutionary importance of such data in the genus.
Farsi abstract :
عدد كروموزومي و كاريوتايپ 15 گونه از سرده فرفيون از بخشه هاي مختلف موجود در ايران مورد بررسي قرار گرفت. عدد كروموزومي چهار
براي اولين E. gypsicola (2n= و ( 54 E. phymatosperma (2n=16) ،E. inderiensis (2n=18) ،E. polycaulis (2n= گونه شامل، ( 18
بار گزارش ميشود. همچنين نتايج مطالعه حاضر براي 11 گونه ديگر مورد مطالعه، تاييد كننده پژوهش هاي پيشين بود. وجود دو تيپ هسته اي
تاييد مي شود. كاريوتايپ ها متقارن بوده و اغلب شامل كروموزوم هاي متاسنتريك و ساب متا E. microsciadia ديپلوييد وتتراپلوييد براي گونه
براي اين سرده است كه بر اهميت x = 7, 8, 9, سنتريك هستند. همچنين نتايج ما تاييد كننده وجود اعداد كروموزومي پايه متفاوت شامل 10
تكاملي چنين داده هايي دلالت دارد.
Keywords :
Cytotypes , Euphorbia , flora of Iran , karyology , taxonomy , evolution
Journal title :
Astroparticle Physics
