Quantitative anatomical characteristics of some species of the genus Crataegus L. (Rosaceae) of the Armenian flora

Document Type : Research Paper

Authors

1 Department of Higher Plant Taxonomy and Geography, Takhtajan Institute of Botany of the NAS RA, Acharyan 1, Yerevan, Armenia

2 All-Russian Scientific Research Institute of Medicinal and Aromatic Plants, Botanical Garden, Moscow, Russian Federation

Abstract

A study of the quantitative anatomical features of the leaf blades’ epidermis belonging to six species of the genus Crataegus in the flora of Armenia was conducted. The species treated belong to the subsect. Pentagynae Series Pentagynae (Crataegus pentagyna Waldst. et Kit., C. × zangezura Pojark.) and subsect. Crataegus Series Ambiguae (Crataegus meyeri Pojark., C. rhipidophylla Gand., C. pseudoheterophylla Pojark., C. × armena Pojark.). Microscopic samples of leaf blade fragments were prepared according to the Russian State Pharmacopeia XV. The leaf surface samples were observed with the light microscope. For comparative quantitative studies of stomatal apparatus parameters, the site in the middle third of the leaf blade between its margin and the central vein was taken. The quantity and size of CaC2O4 idioblasts, simple unicellular hairs, the stalk, and head of the gland were determined. Statistical analysis performed in the IBM SPSS Statistics program. We used Student's criterion for calculations with the critical significance level taken as 0.05. We examined pairwise statistical relationships between the studied quantitative characteristics using the Pearson correlation coefficient. The stomata of both hybrids were significantly smaller in terms of length, width, and area than those of their parental forms. The gland heads in hybrids were significantly smaller in terms of length, width, and area than those of their parental forms. The average sizes of druzes and crystals CaC2O4 are almost identical across the species studied. Simple unicellular pointed sinuous thick-walled hairs found only in the epidermis of Crataegus meyeri, C. rhipidophylla, and C. × armena. Crataegus × armena had significantly more of these hairs, and they were significantly longer than those of the parental forms.

Keywords

Article Title [Persian]

صفات کمی تشریحی تعدادی از گونه های جنس زالزالک (تیره گل سرخ) در فلور ارمنستان

Authors [Persian]

  • مرینه سرگزیان 1
  • النا بابایوا 2
1 بخش تحقیقات رده بندی و جغرافیای گیاهان عالی، موسسه گیاه شناسی تختاجان، اکادمی ملی علوم جمهوری ارمنستان، ایروان، ارمنستان
2 موسسه تحقیقات گیاهان معطر و دارویی روسیه، باغ گیاه شناسی مسکو، فدراسیون روسیه
Abstract [Persian]

صفات کمی آناتومیکی غشای پهنک برگ شش گونه از جنس زالزالک از فلور ارمنستان مطالعه شد. گونه‌های مورد مطالعه به زیر بخشSeries Pentagynae (Crataegus pentagyna Waldst. et Kit., C. × zangezura Pojark.) ،pentagyna و زیربخش Crataegus Series Ambiguae (Crataegus meyeri Pojark., C. rhipidophylla Gand., C. pseudoheterophylla Pojark., C. × armena Pojark.).   تعلق دارند. نمونه‌های میکروسکوپی قطعات پهنک برگ براساس دستورالعمل فارماکوپه شماره ۱۵ کشور روسیه تهیه شد. نمونه‌های سطح برگ به کمک میکروسکوپ نوری مطالعه شدند. برای مطالعات مقایسه‌ای صفات کمی روزنه‌ها، بخش یک سوم میانی پهنک برگ در فاصله بین رگبرگ میانی و حاشیه برگ مورد استفاده قرار گرفت. تعداد و اندازه ایدیوبلاست‌هایCaC2O4 ، کرک‌های ساده تک سلولی و غدد ترشحی پایک دار شناسایی شدند. آنالیز آماری در برنامه IBM- SPSS انجام شد. ما از معیار آموزشی برای محاسبات استفاده کردیم و سطح اهمیت بحرانی را 0/05 در نظر گرفتیم. روابط آماری دوجانبه بین ویژگی‌های کمی مورد مطالعه را با استفاده از ضریب همبستگی پیرسون بررسی کردیم. روزنه‌های هر دو هیبرید از نظر طول، عرض و سطح به‌طور قابل توجهی کوچکتر از والدین خود بودند. سرغده‌های موجود در هیبریدها از نظر طول، عرض و سطح به‌طور معنی‌داری کوچکتر از سرغده‌های والدین آن‌ها بودند. میانگین اندازه دروزها و بلورهای اگزالات کلسیم (CaC₂O₄) در میان گونه‌های مورد مطالعه تقریباً یکسان است. کرک‌های ساده، تک‌سلولی، نوک‌تیز، مارپیچ و دیواره ‌ضخیم تنها در اپیدرم Crataegus meyeri، C. rhipidophylla  و C. × armena  مشاهده شدند. در Crataegus × armena  تعداد این کرک‌ها به‌طور معنی‌داری بیشتر بود و طول آن‌ها نیز به‌طور معنی‌داری از والدین بیشتر بود.

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The Iranian Journal of Botany
Volume 31, Issue 2 - Serial Number 62
December 2025
Pages 227-241

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History

  • Receive Date: 27 August 2025
  • Revise Date: 29 October 2025
  • Accept Date: 11 December 2025

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