Doğu Anadolu bölgesinde yayılış gösteren bazı yonca (Medicago sativa) ekotiplerinde populasyon yapısı değerlendirmesi

Year 2018, Volume: 31 Issue: 1, 61 - 65, 01.04.2018

Doğan İlhan

https://doi.org/10.29136/mediterranean.376561

Abstract

Baklagil yembitkisi olan yonca (Medicago sativa L.), hayvancılık için paha biçilemez bir üründür ve
dünya çapında ve Türkiye genelinde yetiştirilmektedir. İlk çeşitlilik
bölgelerinin kökeninin Kafkasya, Kuzey İran ve Türkiye’nin Kuzeydoğusu olduğu
kabul edilmektedir.  Yonca’nın değişik
ekotipleri çok sayıda yetiştirici tarafından kültüre alınarak yetiştirilmekte
ya da coğrafi ve iklim koşulları temelinde yabani olarak yetişmektedir. Yonca
ekotiplerinin populasyon yapısı ile ilgili olarak alttürler arasındaki genetik
yapı temelinde bazı ayrışmalar görülmektedir. Bu çalışmada, Doğu Anadolu Bölgesinde yayılış
gösteren 4 farklı yonca ekotip populasyonunun 31 SSR markörü kullanılarak
populasyon yapısı değerlendirilmiştir. Sonuçlar, toplam 16 farklı genotipten
oluşan populasyonların 3 alttür (sativa,
varia and falcata) şeklinde birbirinden açık bir şekilde ayrıldığını
göstermiştir. Gerçekleştirilen bu çalışmanın hem daha fazla yonca
populasyonunun değerlendirilmesinde hem de bilimsel açıdan kompleks üyelerinin
sınıflandırılmasında önemli bir referans olabileceği düşünülmektedir.

Keywords

SSR markörler, Baklagil, Yem bitkisi, Ekotip, Gen akışı

The evaluation of population structure in some alfalfa (Medicago sativa) ecotypes demonstrating distribution in Eastern Anatolia region

Abstract

The legume forage alfalfa (Medicago sativa L.) is invaluable crop useful for animal husbandry and is grown worldwide and country-wide in Turkey. It is approved that origins of the first diversity regions are Caucasian, Northwest of Iranian, North-eastern of Turkey for alfalfa. Various ecotypes of alfalfa either are cultivated by a great number of breeders or grown as wild based on geographic and climatic conditions. With regard to population structure of alfalfa ecotypes, some separations are seen depending on genetic structure among the subspecies. In this study, population structure was evaluated for four different ecotypes tetraploid alfalfa populations demonstrating distribution in Eastern Anatolia Region using 31 SSR markers. Results showed that populations of 16 different genotypes clearly separated each other as three subspecies (sativa, varia and falcata). It is expected that this work will be an important reference both for the evaluation of more alfalfa populations and for the scientific classification of complex members.

Keywords

Forage, SSR markers, Legume, Ecotype, Gene flow

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