Morphological and micromorphological characterization of achenes in Ranunculus species in Iran

Document Type : Research Paper

Authors

1 Associate Prof., Department of Plant Sciences, Faculty of Biological Sciences, Alzahra University, Tehran, Iran

2 Associate Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

3 MSc Graduate, Department of Plant Sciences, Faculty of Biological Sciences, Alzahra University, Tehran, Iran

10.22092/bot.j.iran.2024.367654.1405

Abstract

In this study, the morphology and micromorphology of achenes in the species of Ranunculus, the largest genus in the Ranunculaceae in Iran, were examined for the first time. Fifty-eight species were studied through herbarium samples using a stereomicroscope, and micrographs of the surface of the pericarp were taken with a Dino-Lite Digital Microscopy (DM) system. The characters studied included the number, size, and shape of the achene, as well as the shape and size of the beak and surface ornamentation of the achene. The fruit shapes ranged from circular, oval, and egg-shaped to triangular. Surface ornamentations varied from smooth and glossy to hairy, warty, and punctate. In addition, the length of the beak was found to be an important trait for distinguishing species groups.  Based on these features, species groups were identified, and a key for identifying species of Ranunculus based mostly on achene characteristics considering leaves and life form characters was provided. In addition, considering diagnostic characteristics, differences and relationships among species were discussed here.
 
 

Keywords

Main Subjects

Article Title [Persian]

بررسی ریخت‌شناسی و ریزریخت‌شناسی فندقه در گونه‌های آلاله‌ در ایران

Authors [Persian]

  • منیژه پاکروان 1
  • بهنام حمزه‌ای 2
  • مینو رمضانعلی 3
1 دانشیار گروه علوم گیاهی، دانشکده علوم‌زیستی، دانشگاه الزهراء، تهران، ایران
2 دانشیار مؤسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
3 دانش‌آموخته کارشناسی ارشد سیستماتیک گیاهی، گروه علوم گیاهی، دانشکده علوم‌زیستی، دانشگاه الزهراء، تهران، ایران
Abstract [Persian]

در این مطالعه، ریخت‌شناسی و ریزریخت‌شناسی میوه در گونه‌های آلاله، بزرگ‌ترین جنس آلاله‌ایان در ایران برای نخستین بار مورد بررسی قرار گرفت. میوه‌های 58 گونه از نمونه‌های هرباریومی با استفاده از استریومیکروسکوپ مطالعه و به کمک سیستم عکس‌برداری میکروسکوپ دیجیتالی، میکروکروگراف‌هایی از سطح پریکارپ تهیه شد. صفات مورد مطالعه شامل تعداد، اندازه و شکل میوه، شکل و اندازه منقارو تزیینات سطح میوه بود. شکل‌های میوه از دایره‌ای، بیضوی، تخم‌مرغی تا مثلثی مشاهده شد. تزیینات سطح میوه از صاف و صیقلی تا کرک‌دار، زگیل‌دار و منقوط متفاوت بود. همچنین، طول منقار از صفات مهم جهت تعیین گروه‌های گونه‌ای درنظر گرفته شد. بر این اساس، گروه‌های گونه‌ای مشخص شد و کلید شناسایی نیز با کمک ویژگی‌های میوه برای گونه‌های جنس ارایه شد.  به علاوه، با استفاده از صفات تشخیصی، اختلاف و روابط گونه‌ها مورد بحث قرار گرفت.
 
 

Keywords [Persian]

  • آلاله‌ایان
  • تزیینات فندقه
  • ریزریخت‌شناسی
  • شکل منقار
  • گروه گونه‌ای

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Rostaniha
Volume 25, Issue 2 - Serial Number 71
December 2024
Pages 191-206

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History

  • Receive Date: 12 November 2024
  • Revise Date: 21 November 2024
  • Accept Date: 25 November 2024
  • Publish Date: 28 December 2024

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