ASTRAGALUS SECT. IRANIA (FABACEAE): A NEW MONOTYPIC SECTION FROM IRAN

Document Type : Research Paper

Authors

1 Botany Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), P. O. BOX 13185-116, Tehran, Iran.

2 Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.

Abstract

Based on morphological and molecular phylogenetic data, here we describe Astragalus sect. Irania Maassoumi, Mahmoodi & Bagheri as a new section in the immense genus Astragalus. Description and diagnosis are given. Morphologically, the new section is closely related to sect. Stereothrix Bunge, which is widely, distributed in Elburz and Zagros Mountains ranges. The new section differs from sect. Stereothrix in characters of the inflorescence, color of petals and stipules. But in the molecular phylogenetic analysis, it is surprisingly placed among the thorny Astragalus species. Type of the new section is A. issatissensis Maassoumi, Mahmoodi, which is so far known only from the highest elevations of Shirkuh Mt. above 3800 m a.s.l in Yazd province.

Keywords

Article Title [Persian]

بخشه Astragalus sect. Irania: بخشه جدید و تک‌گونه‌ای از ایران

Authors [Persian]

  • علی اصغر معصومی 1
  • محمد محمودی 1
  • علی باقری 2
1 استاد پژوهش، بخش تحقیقات گیاه‌شناسی، مؤسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
2 استادیار، گروه زیست‌شناسی گیاهی و جانوری، دانشکده علوم و فناوری‌های زیستی، دانشگاه اصفهان، اصفهان، ایران
Abstract [Persian]

در این مقالهبراساس داده‌های تبارزایی مولکولی و ریخت‌شناسی بخشه  Astragalus sect. Irania به‌عنوان آرایه‌ای جدید و تک‌گونه‌ای متعلق به سرده گون (تیره باقلائیان) معرفی می‌شود. شرح کامل بخشه و ویژگی‌های افتراقی آن از آرایه‌های مشابه ارائه شده است. از نظر ریخت‌شناسی، نزدیک‌ترین خویشاوند این بخشه جدید sect. Stereothrix Bunge است که به‌صورت نسبتاً گسترده‌ای در رشته‌ کوه‌های البرز و زاگرس پراکنش دارد. بخشه جدید از نظر ویژگی‌های گل‌آذین، رنگ گلبرگ‌ها و گواشوارک با بخشه sect. Stereothrix  متفاوت است.  اما در تحلیل‌های تبارزایی مولکولی در کمال تعجب در میان گون‌های خاردار قرار می‌گیرد. نمونه‌ تیپ این بخشه متعلق به گونه A. issatissensis  است که تاکنون فقط در منطقه آلپی شیرکوه یزد در ارتفاع 3800 متری مشاهده شده است.

Keywords [Persian]

  • New section
  • Astragalus issatissensis
  • Shirkuh
  • alpine
  • Yazd
  • Iran

References

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The Iranian Journal of Botany
Volume 26, Issue 2 - Serial Number 52
December 2020
Pages 100-110

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History

  • Receive Date: 02 July 2020
  • Revise Date: 27 August 2020
  • Accept Date: 05 December 2020

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