MICROMORPHOLOGICAL AND ANATOMICAL STUDIES OF CERTAIN SPECIES OF VERBASCUM (SCROPHULARIACEAE) IN WEST AZERBAIJAN, IRAN

Document Type : Research Paper

Authors

Department of Biology, Faculty of Science, Urmia University, P.O. Box: 57135-165, Urmia, Iran.

Abstract

The high morphological diversity among the species of the genus Verbascum causes problems in the delimitation of the species. Therefore, there is a difficulty in offering a natural and well organized classification for the species of the genus. This research was based on the leaf, seed coat and fruit anatomy, and seed micromorphology of the species growing in Iran. The shape and density rate of epicarpic idioblasts can be a determining character for Verbascum species.Two types of mesophyll were found within the species: Dorsiventral and Isobilateral. Also two types of thickness ratio of endocarp to pericarp (2/3, 1/2) were distinguished. However, a slight difference has been observed in the shape of epidermal cells of seeds and the presence of vesicle on the lateral walls of the epidermal cells of seeds.

Keywords

Article Title [Persian]

مطالعه مورفولوژیکی و ساختار تشریحی بعضی از گونه های جنس گل ماهور (Verbascum (Scrophulariaceae درآذربایجان غربی، ایران

Authors [Persian]

  • سمیه خیری
  • مسعود خیامی
  • احمد محمودزاده
دانشجوی کارشناسی ارشد ، گروه زیست شناسی دانشگاه ارومیه.
Abstract [Persian]

تنوع مورفولوژیک با لا در جنس گل ماهور مشکل عمده ای در تعیین حدود گونه ها است. بنابراین در ارائه یک طبقه‌بندی سازمان یافته و طبیعی در جنس گل ماهور مشکل وجود دارد. تحقیق حاضرساختار تشریحی برگ، پوسته دانه، میوه و ریزساختاری دانه گونه‌های گل ماهور در ایران را مورد بررسی قرار می‌دهد. شکل و تراکم ایدیو بلاستهای اپی‌کارپ می‌تواند به عنوان صفات متمایز کننده گونه‌ای به شمار رود. دو نوع مزوفیل نردبانی-اسفنجی و نردبانی و دو نوع نسبت قطر اندوکارپ به اپی کارپ (2/1 و3/2) در  بین گونه‌ها مشاهده  شد. تزئینات پوسته نیز در همه گونه‌ها مشبک است، لیکن تفاوت جزئی در شکل سلولها و وجود حباب در دیواره‌های جانبی سلولهای اپیدرمی دانه‌ها دیده می‌شود.

Keywords [Persian]

  • Verbascum
  • Iran
  • seed
  • micromorphology
  • leaf
  • Fruit
  • Anatomy
  • Scrophulariaceae

References

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History

  • Receive Date: 10 September 2008
  • Revise Date: 03 February 2009
  • Accept Date: 05 March 2009

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