Linkage Disequilibrium (LD) Analysis in Alfalfa (Medicago sativa L.) Populations Spreading in Different Geographies of the World

Cultivated alfalfa (Medicago sativa L.) was derived from Medicagosativa species complex as a result of breeding efforts. New efforts havefocused on to determine the DNA polymorphisms based on molecularmarkers and to link these polymorphisms with related phenotyperecently. Especially, the relationships between genotypes andphenotypes are evaluated as Linkage Analysis and AssociationMapping Studies. On the basis of information, in this study, LinkageDisequilibrium (LD) analysis was performed using 31 SSR markers forthe 70 populations. For the LD analysis, 23 of the 31 markers identifiedthe physical distances on the 8 chromosomes of the alfalfa. Distancesof 103 loci on 8 chromosomes were determined based on Medicagotruncatula genome. A significant (p

Dünyanın Farklı Coğrafyalarında Yayılış Gösteren Yonca (Medicago sativa L.) Populasyonlarında Bağlantı Eşitsizliği Analizi

Kültür yoncası (Medicago sativa L.), ıslah çalışmaları sonucunda Medicago sativa tür kompleksinden geliştirilmiştir. Son zamanlarda, yonca bitkisindeki çalışmaların moleküler markörler temelinde DNA polimorfizmlerini belirlemeye ve bu polimorfizmlerle ilişkili olan fenotipler arasında bağlantı kurmaya odaklandığı bilinmektedir. Özellikle genotipler ve fenotipler arasındaki ilişkiler, Bağlantı Analizleri ve İlişki Haritalama çalışmaları şeklinde değerlendirilmektedir. Bilgiler temelinde bu çalışmada; 70 populasyon için 31 SSR markörü kullanılarak Bağlantı Eşitsizliği (Linkage Disequilibrium, LD) analizi de gerçekleştirilmiştir. Bağlantı Eşitsizliği analizi için; 31 markörden 23 tanesinin yonca’nın 8 kromozomu üzerindeki fiziksel mesafeleri belirlenmiştir. 8 kromozom üzerinde 103 lokustan oluşan mesafeler Medicago truncatula genomu temel alınarak saptanmıştır. Değerlendirilen markörler için; bu populasyonlarda önemli (p

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