LEAF AND STEM ANATOMY IN IRANIAN BOLBOSCHOENUS SPECIES (CYPERACEAE), AS RELATED TO THEIR TAXONOMY AND ECOLOGY

Document Type : Research Paper

Authors

1 Department of Botany, Iranian Research Institute of Plant Protection

2 Institute of Botany, Academy of Sciences of the Czech Republic

Abstract

Anatomical features of Iranian species, Bolboschoenus affinis, B. glaucus, B. maritimus, B. planiculmis and B. schmidii, were compared in an attempt to identify diagnostic characters that support morphological differentiation and to discover possible relationships between the anatomical and ecological differentiation of species. The leaf and stem anatomy visible on cross sections was studied to complement formerly used diagnostic characters in fruit anatomy. The presence and arrangement of bulliform cells in the leaf epidermis and subepidermal layers appeared to vary between some species, as did the presence of air cavities between the vascular bundles. We found that stem anatomy characters were not that much decisive in the differentiation of species. Although most of the anatomical characters supported the taxonomical differentiation based on morphology and fruit anatomy, they would not be decisive when used alone. In contrast, anatomical adaptations to habitat conditions seem to be clear in certain species and correspond to their ecology, i.e., the adaptation to drought and salinity or flooding conditions.

Keywords

Article Title [Persian]

مطالعه تشریحی برگ و ساقه در گونه‌های ایرانی جنس Bolboschoenus، در ارتباط با تاکسونومی و اکولوژی

Authors [Persian]

  • محمد امینی راد 1
  • زنکا هرودوآ 2
1 مربی پژوهش بخش تحقیقات رستنیها، موسسه تحقیقات گیاهپزشکی کشور.
2 محقق ‌موسسه گیاهشناسی، آکادمی علوم جمهوری چک.
Abstract [Persian]

ساختار تشریحی برگ و ساقه 5 گونه از جنس Bolboschoenus مورد بررسی قرار گرفتند که هدف از این تحقیق، شناسایی خصوصیات تشخیصی با توجه به تمایز مورفولوژیکی و یافتن روابط موجود بین تفاوتهای ساختاری و اکولوژیکی این گونه‌ها بود. ساختار تشریحی در برش عرضی برگ و ساقه برای بدست آوردن صفات تشخیصی جهت تکمیل مطالعات قبلی انجام گرفته در برش عرضی میوه این گونه‌ها مطالعه شدند. حضور و ترتیب سلولهای بولیفرم در لایه‌های اپیدرمی و زیراپیدرمی و همینطور حضور حفرات هوا بین دستجات آوندی در بین گونه‌ها متغیر بود. همچنین مشخص گردید که ساختار تشریحی ساقه دارای صفات تشخیصی مناسب در تشخیص گونه‌ها نیست. اگرچه اغلب صفات تشریحی تایید کننده تفاوتهای مورفولوژیکی و تشریحی میوه می‌باشند لیکن آنها به تنهایی نمی‌توانند موثر باشند. در مقابل، سازگاریهای آناتومیکی نسبت به شرایط زیست محیطی در مورد هر گونه در ارتباط با اکولوژی آنها (از جمله سازش با شرایط خشکی، شوری و ..) کاملا مشخص است.
 

Keywords [Persian]

  • Bolboschoenus
  • Habitat conditions
  • leaf
  • stem
  • Anatomy
  • Taxonomy
  • Iran

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The Iranian Journal of Botany
Volume 19, Issue 2 - Serial Number 2
December 2013
Pages 221-234

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  • Receive Date: 30 December 2013
  • Accept Date: 30 December 2013

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