Publication: Bazı ekmeklik buğday genotiplerinde SSR (Mikrosatalit) markörü kullanılarak kahverengi pas dayanıklılık geni Lr10’un belirlenmesi
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Date
2021-01-01
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Kahramanmaraş Sütçu İmam Üniversitesi Rektörlüğü
Abstract
Çalışmada, Türkiye’de ekmeklik buğday tarımında sıklıkla tercih edilen çeşitler, CIMMYT-Meksika’dan temin edilen Thatcher hatlar ve bu genotipler arasında yapılan melezlemeler sonucu elde edilen F1 melez genomlarında, SSR (Basit Dizi Tekrarları-Mikrosatelit) yöntemi kullanılarak, kahverengi pas hastalığına dayanıklılık genleri arasında önemli bir yere sahip olan Lr10 geninin varlığını incelenmiştir. Araştırma yer alan genotipler, 2013-2017 yetiştirme dönemlerinde; deneme materyalinin çoğaltılması, genotipler arası melezlemelerin gerçekleştirilmesi ve kahverengi pas hastalığının arazi gözlemlerinin yapılması amacıyla Bursa Uludağ Üniversitesi Ziraat Fakültesi deneme alanında yetiştirilmiştir. Yapılan melezlemeler sonucu elde edilen 13 adet F1 hattı, 22 adet ekmeklik (Triticum aestivum L.) buğday çeşidi ile 2 adet Thatcher hat (Lr10, TcHassas), Bursa Uludağ Üniversitesi Tarla Bitkileri Bölümü Tohumluk Laboratuvarında SSR (mikrosatlit) yöntemi kullanılarak DNA analizlerine tabi tutulmuştur. Yapılan analizler sonucunda Lr10 geni; Karatopak, Kaşifbey ve Gün-91 çeşitlerinde tespit edilmiştir. Yapılan bu çalışma; ekmeklik buğdayda SSR tekniğinin kahverengi pas dayanıklılık genlerini belirlemede kullanılabilir olduğunu saptamış ve ayrıca çalışmada yer alan Thatcher (yakın izogenik) hatlarının dar bir genetik yapıya sahip olmaları sebebiyle, taranan dayanıklılık genlerini belirlemede iyi bir belirteç genom olduğu sonucunda varılmıştır. Gelecekte yürütülecek ıslah programlarında dayanıklılık genleri içeren genotiplerin belirlenmesinde moleküler markörlerin kullanılmasının kısa sürede ve kesin sonuçlara ulaşmada etkili olacağı sonucuna ulaşılmıştır.
In this study, the existence of the Lr10 gene, which has an important place among the leaf rust disease genes, was investigated by using the SSR (Simple Sequence Repeats-Microsatelite) method in frequently used F1 hybrid genomes bread wheat that bred from Thatcher lines of CIMMYT Mexico. In order to reproduce the trial plant material, to perform cross-genotypes and to make field observations of leaf rust disease, 13 F1 lines, 22 bread ( Triticum aestivum L.) wheat varieties and 2 Thatcher lines (Lr10, Tc susceptible) a study was conducted at the experiment fields of Bursa Uludag University Faculty of Agriculture, Agricultural Application and Research Center between 2013-2017. genotypes were subjected to DNA analysis using the SSR (microsatite) method in the Seed Laboratory of the Field Crops Department of the Bursa Uludag University Faculty of Agriculture. The analysis results indicated the existence of the Lr10 gene in Karatopak, Kasifbey and Gun-91 varieties. In this study; The SSR technique was found to be useful for determining leaf rust resistance genes in bread wheat, and it was also concluded that the Thatcher (close isogenic) lines in the study had a narrow genetic structure, so it was considered a good marker genome to determine the screened resistance genes. It has been concluded that the use of molecular markers in determining genotypes containing resistance genes in breeding programs will be effective in the future.
In this study, the existence of the Lr10 gene, which has an important place among the leaf rust disease genes, was investigated by using the SSR (Simple Sequence Repeats-Microsatelite) method in frequently used F1 hybrid genomes bread wheat that bred from Thatcher lines of CIMMYT Mexico. In order to reproduce the trial plant material, to perform cross-genotypes and to make field observations of leaf rust disease, 13 F1 lines, 22 bread ( Triticum aestivum L.) wheat varieties and 2 Thatcher lines (Lr10, Tc susceptible) a study was conducted at the experiment fields of Bursa Uludag University Faculty of Agriculture, Agricultural Application and Research Center between 2013-2017. genotypes were subjected to DNA analysis using the SSR (microsatite) method in the Seed Laboratory of the Field Crops Department of the Bursa Uludag University Faculty of Agriculture. The analysis results indicated the existence of the Lr10 gene in Karatopak, Kasifbey and Gun-91 varieties. In this study; The SSR technique was found to be useful for determining leaf rust resistance genes in bread wheat, and it was also concluded that the Thatcher (close isogenic) lines in the study had a narrow genetic structure, so it was considered a good marker genome to determine the screened resistance genes. It has been concluded that the use of molecular markers in determining genotypes containing resistance genes in breeding programs will be effective in the future.
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Keywords
Molecular markers, Identification, Cultivars, Bread wheat, Ssr (microsatellite), Lr10, Molecular marker, Science & technology, Life sciences & biomedicine, Agriculture, multidisciplinary, Agriculture, Ekmeklik buğday, SSR (Mikrosatalit), Moleküler markör
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