MORPHOLOGICAL CLADISTIC ANALYSIS OF CALLIGONUM AND PTEROPYRUM (POLYGONACEAE) IN IRAN

Document Type : Research Paper

Authors

1 Department of Plant Biology, Faculty of Basic Sciences, Tarbiat Modares University, Tehran 14115-175, Iran.

2 Research Institute of Forests and Rangelands, P. O. Box 13185-116, Tehran, Iran.

Abstract

The phylogeneteic relationships in genera Calligonum and Pteropyrum (Polygonaceae) are reconstructed using 30 vegetative and reproductive morphological characters. The data matrix comprised 18 species of Calligonum and 3 species of Pteropyrum plus 2 Atraphaxis species representing outgroups. The analyses were conducted using maximum parsimony approach with characters treated both equally weighted and reweighted by rescaled consistency index. The results revealed that Calligonum is monophyletic. But Pteropyrum is appeared to be monophyletic after reweighting procedure. In both analyses Calligonum is composed of two clades, one is including the winged fruit species (sect. Pterococcus) and the second including the bristled fruit ones(sect. Calligonum) encompassing the monotypic sect. Calliphysa (Calligonum junceum). Of 30 characters analyzed, seven are synapomorphic for both genera. Six characters in Calligonum and one in Pteropyrum were genus specific. The remainder of characters was evolved homoplasiously (or ambiguously) among thsese taxa.

Keywords

Article Title [Persian]

آنالیز کلادیستیک ریخت‌شناسی جنسهای Calligonum و Pteropyrum از تیره Polygonaceae

Authors [Persian]

  • شاهرخ کاظم‌پور اوصالو 1
  • سولماز توکلی 1
  • علی‌اصغر معصومی 2
1 استادیارگروه زیست‌شناسی گیاهی دانشگاه تربیت مدرس.
2 استاد پژوهش مؤسسه تحقیقات جنگلها و مراتع کشور.
Abstract [Persian]

21 تاکسون شامل 18 گونه Calligonum و 3 گونه  Pteropyrumبعنوان درون گروه به اضافه 2 گونه از Atraphaxis، بعنوان برون گروه با استفاده از30 صفت ریخت شناسی مورد مطالعه قرار گرفتند. در هر دو آنالیز بدون وزن‌دهی و با وزن‌دهی (توسط شاخص سازگاری تصحیح شده)، Calligonum و Pteropyrum تشکیل کلاد مجزا داده‌اند. هر دو بخشه Pterococcus و) Calligonum  شامل بخشه تک گونه‌ای (Calliphysa از جنس Calligonum تک تبارند. از 30 صفت انالیز شده، 7 صفت پیشرفته مشترک برای هر دو جنس می‌باشد. شش صفت مختص گونه‌های Calligonum و یک صفت ویژه Pteropyrum است. بقیه صفات بطور هم‌نما (یا مبهم) در میان این تاکسون‌ها تکامل یافته‌اند.

Keywords [Persian]

  • Calligonum
  • Pteropyrum
  • Polygonaceae
  • Cladistic analyses
  • Morphological characters
  • Iran

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The Iranian Journal of Botany
Volume 14, Issue 2 - Serial Number 2
December 2008
Pages 117-125

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History

  • Receive Date: 28 October 2015
  • Accept Date: 28 October 2015

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