Abstract
Rubus is a large genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae. The blackberries, as well as various other Rubus species with mounding or rambling growth habits, are often called brambles. Little information is available on the genetic diversity of wild-grown blackberries. The objective of this study was to determine the genetic relationships among nine promising (high-yield capacity, free of pest and diseases, better fruit traits) wild blackberry (Rubus caucasicus L.) selections and the well-known cultivar, “Chester” by using amplified fragment length polymorphism (AFLP) markers. Genotypes were evaluated with three selective primer-enzyme combinations, producing a total of 223 AFLP fragments with 53% polymorphism ratio. Clustering of genotypes using unweighted pair-group method of arithmetic average cluster analysis clearly separated groups of wild blackberry genotypes while the variety “Chester” was clustered independently. Wild selections represented a distinct germplasm source on the basis of the estimated genetic distance among them. Genetic diversity data from this study will be helpful in using and exploiting the wild genetic material for breeding purposes as well as for further research.
Published Version
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