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Bazı Ekmeklik Buğday (Triticum aestivum L.) Çeşitlerinde Erkencilik Geninin Moleküler Markörler ile Tespiti
(Determination of Photoperiodism Gene in Some Bread Wheat (Triticum aestivum L.) Varieties by Molecular Markers )

Author : Eminur ELÇİ  Tuğçe HANÇER  
Type :
Printing Year : 2016
Number : 2016-3
Page : 39-45


Summary
Bitkilerde erkencilik, bitkiden ürünün erken elde edilmesinde, bitkilerin hasat sonrası karşılaşabileceği biyotik ve abiyotik streslere karşı kendini korumasında ve dolayısıyla bitkiden elde edilebilecek ürün miktarının da artışına neden olmaktadır. Erkencilik genleri, ekmeklik buğday türlerinin (Triticum aestivum L.) farklı çevresel koşullara adaptasyonunda önemli bir role sahiptir. Bu çalışmada, değişik coğrafi bölgelerden temin edilmiş ekmeklik buğday çeşitlerinde erkencilik genlerinden biri olan Ppd-D1 geni, Ppd-D1a moleküler markörü kullanılarak PCR analizleri ile incelenmiş ve buğday çeşitlerinin farklı iklimsel koşullara daha iyi adaptasyon sağlamaları açısından bu gene sahip genotiplerin seçilimi yapılmıştır. PCR analizi sonuçlarına göre, 32 farklı ekmeklik buğday çeşidinden 11 tanesinde beklenen seviyede (288 bç) fragment elde edilmiştir. Bu çeşitlerin fotoperiyodizm ya da erkencilik geni olarak bilinen bu geni taşıdıkları düşünülmektedir. Bu çalışma sonucunda erkencilik genine sahip olduğu düşünülen buğday çeşitleri anaç olarak seçilerek yeni erkenci buğday çeşitlerinin geliştirilmesi hedeflenmektedir.

Turkish Keywords
Buğday (Triticum aestivum L.), fotoperiyodizm, erkencilik, moleküler markör, Ppd-D1a.

Abstract
Early flowering facilitates early season resource capture avoiding reduced grain fill associated with late season biotic and abiotic stress, particularly in variable environments. Photoperiodism genes have an important role for environmental adaptation of bread wheat varieties (Triticum aestivum L.). In this study, bread wheat varieties obtained from different geographic regions were analyzed with marker assisted selection method using one of the photoperiodism related genes Ppd-D1 with marker Ppd-D1a and were selected based on the marker for their adaptation of different environmental conditions. For that purpose, 32 different bread wheat varieties were analyzed with PCR and it was resulted amplicons with expected sizes of 288 bp fragments in 11 varieties. Based on the PCR results, it is considered that these varieties include related gene and they will be selected as photoperiodism resistant parents and are planning to be used for further breeding studies

Keywords
Wheat (Triticum aestivum L.), photoperiodism, molecular marker, Ppd-D1a.

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