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BIOSYSTEMATIC STUDY OF ONOBRCHIS VICIIFOLIA SCOP. AND ONOBRCHIS ALTISSIMA GROSSH. (FABACEAE) IN IRAN | ||
| The Iranian Journal of Botany | ||
| مقاله 15، دوره 15، شماره 1، مرداد 2009، صفحه 85-95 اصل مقاله (956.47 K) | ||
| نوع مقاله: Research Paper | ||
| نویسندگان | ||
| Masoud Ranjbar* 1؛ Roya Karamian2؛ Anahita Hadadi1 | ||
| 1Department of Biology, Herbarium division, Bu-Ali Sina University, P.O.Box 65175/4161, Hamedan, Iran. | ||
| 2Department of Biology, Herbarium division, Bu-Ali Sina University, P.O.Box 65175/4161, Hamedan, Iran | ||
| چکیده | ||
| Morphologic characters, meiotic chromosome number and behavior were analyzed in different wild populations of Onobrchis viciifolia Scop. and Onobrychis altissima Grossh.belonging to O. sect. Onobrychis in Iran. All Iranian populations of O. viciifolia and O. altissima studied here were tetraploid and showed 2n = 4x = 28 chromosome number. The basic chromosome numbers (x = 7) is consistent with the proposed base number of x = 7 for O. viciifolia and O. altissima. For O. altissima, two ploidy levels (2n = 2x = 14 and 2n = 4x = 28) have been reported from Caucasus. Results support the hypothesis that Onobrchis viciifolia and O. altissima are related as a progenitor-derivative pair of species. The fact that no diploid populations of O. altissima were found in Iran, would suggest a relatively recent origin of the species, most probably in Caucasus. Almost these taxa displayed regular bivalent pairing and chromosome segregation at meiosis. Meiotic abnormalities observed included varied degree of sticky chromosomes with laggards and bridges in anaphase to telophase, asynchronous nuclei in metaphase II and desynapsis in metaphase I. Also O. viciifolia Scop. is considered as a new record from this section for Iran. These taxa of the genus are cultivated as fodder in Iran. | ||
| کلیدواژهها | ||
| chromosome number؛ Fabaceae؛ meiotic behavior؛ Onobrychis sect. Onobrychis | ||
| عنوان مقاله [English] | ||
| بررسیهای بیوسیستماتیک دو گونه اسپرس (Onobrychis viciifolia, O. altissima) در ایران | ||
| نویسندگان [English] | ||
| مسعود رنجبر1؛ رؤیا کرمیان2؛ آناهیتا حدادی1 | ||
| 1استادیار ، گروه زیستشناسی دانشگاه بوعلیسینا. | ||
| 2دانشیار ، گروه زیستشناسی دانشگاه بوعلیسینا. | ||
| چکیده [English] | ||
| ویژگیهای ریختشناسی، تعداد و رفتار کروموزومی در مرحله میوز در جمعیتهایی از گونههای Onobrychis viciifolia و O. altissima متعلق به بخش Onobrychis مورد تجزیه و تحلیل قرارمیگیرد. تمام جمعیتهای متعلق به مناطق مختلف ایران تتراپلویید بوده و تعداد کروموزومهای آنها 28 x =4= n2 میباشد. شمارش کروموزومی پایه 7 =x ثابت میماند. برای گونه O. altissima شمارشهای قبلی، 14 = x 2 = n2 و 28 = x 4 = n2 از منطقه قفقاز بوده است. نتایج، این نظریه را تأیید مینماید که زوج گونه Onobrychis viciifolia و O. altissima گونههای خویشاوندی هستند که از نسل مشترکی مشتق شدهاند. عدم وجود پایههای دیپلوییدO. altissima در ایران نشان می دهد که احتمالا ظهور جدید این گونه در قفقاز است. اگرچه جفت شدن کروموزومها و جدا شدن آنها در مرحله میوز منظم بود، لیکن بینظمیهای میوز شامل چسبندگی کروموزومها و تأخیر و تشکیل پل در آنافاز و تلوفاز، ناهمزمانی هستکها در متافاز II و دسیناپیس در متافاز I مشاهده گردید. گونه O. viciiflia برای اولین بار از ایران گزارش میشود و هر دو گونه مذکور جزو گونههای کاشته شده میباشند. | ||
| کلیدواژهها [English] | ||
| chromosome number, Fabaceae, meiotic behavior, Onobrychis sect.Onobrychis | ||
| مراجع | ||
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