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POLLEN MORPHOLOGY OF THE GENUS RHEUM L. (POLYGONACEAE) IN IRAN | ||
| The Iranian Journal of Botany | ||
| مقاله 18، دوره 18، شماره 1، شهریور 2015، صفحه 112-117 اصل مقاله (1.28 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22092/ijb.2012.13106 | ||
| نویسندگان | ||
| Ghadir Taheri* 1؛ Mostafa Assadi2 | ||
| 1Assistant Professor/Department of Plant Biology, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran | ||
| 2Professor/Research Institute of Forests and Rangelands, P. O. Box 13185- 116, Tehran, Iran | ||
| چکیده | ||
| Pollen morphology of the genus Rheum (Polygonaceae) from Iran was studied by light microscope (LM) and scanning electron microscope (SEM). Pollen grains are usually auxiliary symmetrical, isopolar and tricolpate in equatorial view, while circular in polar outline. Exine sculpturing is variable and are sparsely faveolate to perforate, less microechinate (Rh. turkestanicum), perforate-favusus, microechinate (Rh. ribes) and perforate to foveolatus, densly microechinate (Rh. persicum). On the basis of qualitative and quantitative characters identification keys for species were prepared. | ||
| کلیدواژهها | ||
| Pollen morphology؛ plant systematic؛ Rheum؛ Polygonaceae؛ Iran | ||
| عنوان مقاله [English] | ||
| مورفولوژی دانه گرده Rheum L. (Polygonaceae) در ایران | ||
| نویسندگان [English] | ||
| قدیر طاهری1؛ مصطفی اسدی2 | ||
| 1استادیار/ گروه زیستشناسی گیاهی، دانشگاه آزاد اسلامی، واحد نیشابور | ||
| 2استاد پژوهش/مؤسسه تحقیقات جنگلها و مراتع کشور | ||
| چکیده [English] | ||
| مورفولوژی دانه گرده جنس Rheum L. (Polygonaceae) در ایران با استفاده از میکروسکوپ نوری (LM) و میکروسکوپ الکترونی نگاره (SEM) مطالعه شد. دانههای گرده در نمای قطبی معمولا دارای تقارن محوری، در دو قطب مشابه، وسه شیاری اند در حالی که در نمای استوایی دایرهای شکلاند. تزیینات سطح اگزین متغیر است و به شکلهای با منافذ پراکنده تا منفذدار، میخچههای پراکنده (Rh. turkestanicum)، منافذ کشیده، میخچه دار (Rh. ribes) و یا منافذ نوک سوزنی- با تراکم بالایی از میخچهها (Rh. persicum) دیده میشوند. بر اساس صفات کمی و کیفی مطالعه شده کلید شناسایی گونههای ایران ارایه میشود. | ||
| کلیدواژهها [English] | ||
| Pollen morphology, plant systematic, Rheum, Polygonaceae, Iran | ||
| مراجع | ||
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