Chromosome counts report of six Astragalus L. (Fabaceae) species from Iran

Document Type : Research Paper

Authors

1 Forests and Rangelands Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center, (AREEO), Kermanshah, Iran

2 Natural Resources Division, Fars Agricultural, and Natural Resources Research and Education Centre, (AREEO), Shiraz, Iran

3 Forests and Rangelands Research Division, Kermanshah Agricultural and Natural Resources Research and Education Center, (AREEO), Kermanshah, Iran.

4 Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.

Abstract

Somatic chromosome numbers of six endemic and rare species of the genus Astragalus were studied. The basic chromosome number for all studied species was x = 8. Five of the studied species including A. assadabadensis, A. carduchorum, A. kirrindicus, A. nervistipulus, and A. microcephalus subsp. pycnocladus were diploid and A. trachyacanthos was tetraploid. The chromosomal parameters of the species were calculated and their idiograms were drawn. The karyotypic formula of the species was different, but in all species most of the chromosomes were metacentric and there were zero to three submetacentric chromosomes. Astragalus assadabadensis had the longest chromosomes and A. trachyacanthos had the shortest chromosomes. Chromosome count of three species including A. carduchorum from the sect. Acidodes, A. microcephalus subsp. pycnocladus and A. trachyacanthos from the sect. Rhacophorus are reported for the first time.

Keywords

Article Title [Persian]

شمارش کروموزومی شش گونه از جنس Astragalus (Fabaceae) از ایران

Authors [Persian]

  • نسترن جلیلیان 1
  • سارا صادقیان 2
  • هوشمند صفری 3
  • عادل جلیلی 4
  • فرشته اسدی‌کرم 4
1 استادیار پژوهش بخش تحقیقات جنگلها و مراتع، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کرمانشاه، سازمان تحقیقات، آموزش و
2 کارشناس پژوهش بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران
3 استادیار پژوهش، بخش تحقیقات جنگلها و مراتع، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کرمانشاه، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرمانشاه، ایران
4 استاد پژوهش، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
Abstract [Persian]

عدد کروموزومی 6 گونه انحصاری و نادر از جنس گون (Astragalus) در این تحقیق بررسی شد. عدد پایه کروموزومی برای تمام گونه‌ها 8=x بود. گونه‌های A. assadabadensis، A. carduchorum، A. kirrindicus، A. nervistipulus وA. microcephalus subsp. pycnocladus دیپلوئید و گونه‌ی A. trachyacanthos تتراپلوئید بود. پارامتر‌های کروموزومی گونه‌ها بررسی شد و ایدیوگرام آنها رسم گردید. فرمول کاریوتیپی گونه‌ها متفاوت بود اما در تمام آنها بیشتر کروموزوم‌ها متاسنتریک بودند و تعداد صفر تا 3 کروموزوم ساب متاسنتریک در فرمول کاریوتیپی وجود داشت. گونه‌ی A. assadabadensis بلندترین طول کروموزوم‌ها و گونه‌ی A. trachyacanthos کوتاه‌ترین طول کروموزوم‌ها را داشتند. عدد کروموزومی گونه‌ی A. carduchorum از بخش Acidodes، گونه‌ی A. microcephalus subsp. pycnocladus وA. trachyacanthos  از بخش Rhacophorus برای اولین بار گزارش می‌گردد.

Keywords [Persian]

  • Astragalus
  • chromosome counts
  • Fabaceae
  • idiograms
  • karyotype
  • Iran

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The Iranian Journal of Botany
Volume 28, Issue 1
May 2022
Pages 69-75

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History

  • Receive Date: 08 April 2022
  • Revise Date: 17 May 2022
  • Accept Date: 07 June 2022

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