Assessment of genetic diversity in‏ ‏Corylus avellana L. by ISSR marker and ‎retrotransposon in Amlash region

In this study, the genetic diversity of 63 hazelnut genotypes was evaluated using 10 ISSR primers, two retrotransposon markers and seven combined ISSR and retrotransposon primers, which of the seven combined primers, only three showed scorable bands and other primers did not form a band. The 15 primers used in this study were able to create a total of 116 polymorphic bands. The UBC822 produced the highest number of polymorphic bands with 14 bands, the UBC814 with 3 bands had the least number of bands. The polymorphic information content and marker index of primers ranged from 0.18 to 0.44 as well as 0.50 to 11.31 respectively. Principal coordinate analysis showed that the first three components were able to explain a total of 37.12% of the total variance. COMPLET cluster analysis divided 63 studied genotypes into seven groups, which were 8, 13, 7, 3, 3, 13, 16 genotypes, respectively. The accuracy of grouping obtained from cluster analysis was confirmed by the Fisher linear focal detection function with 0.81 percent. Overall, primers UBC822, UBC813, TOS-2 and TOS-1+TOS2 can be introduced as useful and desirable for separation of genotypes and cultivars of hazelnut.