Abstract
Iran is an important producer of cornelian cherries ( Cornus mas L.). Seed propagation and long term human selection have given rise to a great diversity of trees. In this study, ISSR marker was used for genetic diversity evaluation of 40 accessions of cornelian cherries ( C. mas L.). With 20 ISSR primers, 171 polymorphic bands were detected with polymorphism ratio range of 80–100%. The average polymorphism information content (PIC) was 0.46, which shows that the majority of primers are informative. The average values of Effective Multiplex Ratio (EMR), Marker Index (MI), effective number of alleles (Ne), Nei's gene diversity (He) and Shannon's information index ( I ) for all primers were 8.0, 3.75, 1.756, 0.416 and 0.595 respectively. Based on these results, ISSR analysis can be used for the characterization and grouping of cornelian cherry accessions. This is the first study demonstrating that ISSR analyses can be used to differentiate and classify cornelian cherry accessions. ► Genetic variation on Cornus mas L. accessions was evaluated by ISSR. ► Genetic similarity coefficients ranged from 0.33 to 0.731. ► Cluster analysis separated the accessions into 5 main groups. ► Great genetic diversity was observed among Iranian Cornelian cherry accessions.
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