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POLLEN MORPHOLOGY OF THE GENUS ROSA L. (ROSACEAE) IN IRAN | ||
| The Iranian Journal of Botany | ||
| مقاله 16، دوره 18، شماره 2، اسفند 2012، صفحه 284-293 اصل مقاله (1.93 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/ijb.2012.101512 | ||
| نویسندگان | ||
| Narges Fatemi1؛ Farideh Attar* 2؛ Mohammad Hassan Assareh3؛ Behnam Hamzehee4 | ||
| 1MSc / School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, P. O. Box 14155-6455, Tehran, Iran | ||
| 2Professor / School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, P. O. Box 14155-6455, Tehran, Iran | ||
| 3Professor / Research Institute of Forests and Rangelands, P. O. Box.13185-116, Tehran, Iran | ||
| 4Research Lecturer / Research Institute of Forests and Rangelands, P. O. Box.13185-116, Tehran, Iran | ||
| چکیده | ||
| Pollen grains of 13 species of the genus Rosa belonging to two subgenera, Rosa and Hulthemia, and one hybrid species were performed using light (LM) and scanning electron microscopy (SEM). The basic shape of pollen grains in 11 studied taxa is subprolate but prolate and rarely prolate- spheroidal pollen grains also can be found in nine species. The grains are usually trizonocolporate, aperture structure consists of 3 ectocolpi and 3 endopores. Endopores are located in the middle part of ectocolpi. Similar to the other genera of Rosaceae, striate sculpturing is the main ornamentation of pollen grains. According to surface sculpturing features such as slope, diameter and distance between ridges, number and size of perforations is classified into four major types and four subordinate types; however, other ornamentation types such as gemmate are observed. Characters of pollen grain provide useful criteria for separating taxa in sectional and specific levels. | ||
| کلیدواژهها | ||
| Iran؛ pollen grain؛ Rosa؛ Rosaceae؛ Taxonomy | ||
| عنوان مقاله [English] | ||
| مطالعه دانه گرده جنس Rosa L. (Rosaceae) در ایران | ||
| نویسندگان [English] | ||
| نرگس فاطمی1؛ فریده عطار2؛ محمد حسن عصاره3؛ بهنام حمزه4 | ||
| 1کارشناس ارشد / دانشکده زیست شناسی دانشگاه تهران | ||
| 2استاد / دانشکده زیست شناسی دانشگاه تهران. | ||
| 3استاد پژوهش / موسسه تحقیقات جنگلها و مراتع کشور. | ||
| 4مربی پژوهشی / موسسه تحقیقات جنگلها و مراتع کشور | ||
| چکیده [English] | ||
| در این مطالعه دانه گرده 13 گونه از جنس Rosa متعلق به دو زیر جنس Rosa و Hulthemia و یک دورگه با استفاده از میکروسکوپ نوری و الکترونی مورد مطالعه قرار گرفت. بر اساس شکل دانه گرده، در 11 تاکسون شکل Subprolate و به ندرت Prolate, Prolate- spheroidal مشاهده شد. دانههای گرده سه شیار منفذی و ساختار دریچه شامل 3 ectocolpi و3 endopores است. endopores معمولا در بخش میانی ectocolpi قرار گرفتهاند. مشابه جنسهای دیگر این خانواده،تزئینات سطح دانه گرده شیاردارstriate) ) است که بر اساس صفاتی از جمله شیب، قطر و فاصله بین شیارها، تعداد و اندازه منافذ به 4 گروه اصلی و 4 زیر گروه تقسیم میشود. با این حال تزئینات نادر دیگری مثل gemmate نیز مشاهده شد. بر اساس بررسیهای انجام شده مشخص شد که صفات گردهشناسی ابزار مفیدی برای جداسازی در سطح بخش و گونهدر این جنسهستند. | ||
| کلیدواژهها [English] | ||
| Iran, pollen grain, Rosa, Rosaceae, Taxonomy | ||
| مراجع | ||
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