مطالعات کروموزومی بر روی برخی از گونه های سرده پیاز (تیره نرگسیان) در ایران

نوع مقاله: مقاله پژوهشی

نویسنده

هیات علمی، علوم زیستی، دانشکده علوم، دانشگاه کردستان، سنندج، ایران

چکیده

چهار گونه از دو زیر جنس پیازهای ایران، با استفاده از تکنیک اسکواش و رنگ آمیزی فولگن، مورد ارزیابی کروموزومی و کاریوتیپی قرار گرفتند. سطح پلوییدی گونه‌هایA. Longivaginatum ، A. hooshidaryae و A. remediorum (2n = 2x = 16) برای نخستین بار گزارش می شود. نتایج نشان داد که A. rotundum تتراپلویید (2n=4x= 32) است. دو تیپ کروموزومی (‘‘m’’, ‘‘sm’’) فرمول های کاریوتیپی مختلفی را تشکیل دادند. میانگین طول کروموزوم بین 8/7 -56/13 میکرومتر، متغیر بود. نتایج نشان می دهد که گونه A. longivaginatum دارای نامتقارن ترین کاریوتیپ است.

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