ارزیابی فاصله ژنتیکی لاین‌های ایزوسیتوپلاسمی نرعقیم برنج

نوع مقاله: علمی - پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه ژنتیک و به‌نژادی گیاهی، دانشکده کشاورزی، دانشگاه بین‌المللی امام خمینی (ره) قزوین، قزوین، ایران

2 استاد، گروه بیوتکنولوژی و اصلاح نباتات، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

3 استادیار، گروه بیوتکنولوژی و اصلاح نباتات، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

چکیده

برای توسعه برنامه‌های به‌نژادی برنج هیبرید، طبقه‌بندی صحیح لاین‌های والدینی در میان گروه‌های هتروتیک امری ضروری است و می‌تواند به به‌نژادگر در پیش‌بینی عملکرد هیبریدهای F1 و گزینش والدین مناسب کمک شایانی نماید. از این‌رو در این تحقیق، فواصل ژنتیکی 20 لاین والدینی و 40 لاین نرعقیم برنج با استفاده از صفات مورفولوژی، گلچه‌ای و گرده‌شناسی مورد ارزیابی قرار گرفتند. گروه‌بندی افراد نشان داد که لاین‌های نرعقیم ندا در زیر شاخه اول و لاین‌های نرعقیم نعمت نیز با یکدیگر در زیر شاخه دوم از گروه اول قرار دارند. لاین‌های نرعقیم دشت A (دشت × IR68899A)، خزر A، حسنی A، گرده A، سنگ‌طارم A، شصتک‌محمدی A و نگهدارنده آن‌ها نیز هر کدام به‌طور جداگانه در یک گروه قرار گرفتند بنابراین مشخص می‌شود که این لاین‌ها نیز بعد از چندین نسل تلاقی برگشتی به خلوص بالایی رسیده‌اند. از نتایج این تحقیق می‌توان جهت انتخاب لاین‌های نرعقیم مطلوب و به‌کارگیری در برنامه تولید برنج هیبرید به‌منظور یافتن نتاج با عملکرد بالا استفاده نمود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of Genetic Distance of Rice Male Sterile Isosytoplasmic Lines

نویسندگان [English]

  • Ammar Afkhami Ghadi 1
  • Nadali Babaeian Jelodar 2
  • Nadali Bagheri 3
1 PhD Student, Department of Genetics and Plant Breeding, Faculty of Agriculture, Imam Khomeini International University, Qazvin, Iran
2 Professor, Department of Plant Breeding, Faculty of Agriculture, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
3 Assistant Professor, Department of Plant Breeding, Faculty of Agriculture, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
چکیده [English]

Exact classification of parental lines between hetrotic groups is necessary for improvement of hybrid rice breeding programs because it can help breeders in parental selection and prediction of F1 hybrids yield. In this research, genetic distance of 18 parental and 40 male sterile lines were evaluated based on morphological, floral and palynological traits. Cluster analysis indicated that Neda male sterile lines were placed in first sub-group and also Nemat male sterile lines were in second sub-group of the first group. Dasht A (Dasht × IR68899A), Khazar A, Hasani A, Gerde A, Sang Tarom A, Shastak Mohammadi A and their maintainer lines were in one separate group. Therefore, these lines had high purity after seventh backcross. The results of this research can be used for selection of suitable CMS lines used in breeding projects of hybrid rice to find high performance progenies.

کلیدواژه‌ها [English]

  • Genetic-cytoplasmic male sterility
  • Hybrid rice
  • Morphological and palynology traits
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