An Assessment of the Genetic Diversity within a Collection of Wild Cranberry (Vaccinium macrocarpon Ait.) Clones with RAPD-PCR
Forty-three wild cranberry (Vaccinium macrocarpon Ait.) clones collected from four Canadian provinces and five cranberry cultivars were assessed for genetic variability by using random amplified polymorphic DNA (RAPD)-PCR. Fourteen primers generated 161 polymorphic RAPD-PCR bands. A substantial degree of genetic diversity was found among the wild cranberry collections. Cluster analysis by the unweighted pair-group method with arithmetic averages (UPGMA) separated the wild clones and three cultivars into five main clusters, and identified the two remaining cultivars as outliers. Furthermore, within four clusters, the genotypes tended to form sub-clusters that were in agreement with the principal coordinate (PCO) analysis. Geographical distribution explained 10% of total variation as revealed by analysis of molecular variance (AMOVA). The RAPD markers detected a sufficient degree of polymorphism to differentiate among cranberry clones and cultivars, making this technology valuable for germplasm management and the more efficient choice of parents in current cranberry breeding programs.
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