KARYOLOGICAL STUDY OF SOME ONOPORDUM L. (ASTERACEAE) SPECIES IN IRAN

Document Type : Research Paper

Authors

Faculty of Biological Science, Alzahra University, Sheikh-Bahaee Sq., Tehran, I. R. Iran.

Abstract

The somatic chromosome numbers and karyotype of five species of Onopordum L. (Asteraceae) from Iran were investigated. Our results confirm that all of the species are diploid (2n=34). First chromosome reports are presented for O. leptolepis DC., O. heteracanthum C. A. Mey. and O. carduchorum Bornm & Beauverd. Besides, the chromosome numbers of O. armenum Grossh., O. carduchorum and O. acanthium L. are reported from Iran for the first time, confirm the previous reports. Karyotype formulae for O. armenum, O. carduchorum and O. leptolepis were similar (1Sm+16m), for O. heteracanthum and O. acanthium were respectively 17m and 1M+16m+2B.Satellites were commonly found on submetacentric pairs, being also variable in morphology and location.
 

Keywords

Article Title [Persian]

بررسی کاریولوژیک برخی از گونه های .Onopordum L (تیره کاسنی) در ایران

Authors [Persian]

  • الهام آقاباباییان
  • منیژه پاکروان
  • اختر توسلی
کارشناس ارشد، دانشگاه الزهراء
Abstract [Persian]

تعداد کروموزوم های سوماتیک و کاریوتایپ در پنج گونه از Onopordum  از ایران مورد بررسی قرار گرفت. نتایج ما سطح دیپلویید ( 342n=) را در تمام گونه ها تایید نمود. کاریوتایپ برای گونه های O. leptolepis, O. heteracanthum  وO. carduchorum  برای اولین بار ارائه می‌شوند. علاوه بر آن اعداد کروموزومی برای گونه های  O. armenum, O. carduchorumو O. acanthium  برای اولین بار از ایران گزارش شده و تایید کننده گزارشات قبلی می باشد. فرمول کاریوتایپی برای O. armenum, O. carduchorum وO. leptolepis مشابه بوده (1Sm+16m) برای O. heteracanthum  و  O. acanthiumبترتیب 17m و  1M+16m+2B بود. ماهواره ها در بیشتر کروموزوم های متاسنتریک دیده شد ولی در شکل و جایگاه کروموزومی خیلی تنوع داشت.

Keywords [Persian]

  • Chromosome
  • Iran
  • Karyotype
  • Onopordum

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The Iranian Journal of Botany
Volume 21, Issue 2 - Serial Number 2
December 2015
Pages 152-157

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History

  • Receive Date: 21 July 2015
  • Revise Date: 22 October 2015
  • Accept Date: 15 December 2015

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