Erwerbs-Obstbau, cilt.65, sa.6, ss.2537-2546, 2023 (SCI-Expanded)
This study was carried out in order to characterize 101 selected seed-propagated hawthorn (Crataegus spp.) genotypes with superior horticultural characteristics natively grown as populations in the Çoruh Valley of northeastern Türkiye. Simple sequence repeat (SSR) markers used for characterization of hawthorn genotypes belong to different Craetagus species. A total 13 SSR primer pairs were used in the molecular characterization study. Clustering and genetic structure analysis were performed using the UPGMA (unweighted pair group method with arithmetic means) method. Clustering analysis showed that hawthorn genotypes were placed in eight main groups (together with one apple genotype) on the dendrogram. Dice similarity coefficients were found between 0.43–0.97, indicating great inter- and intraspecific genetic diversity. The polymorphic information content (PIC) values of the SSR primers ranged between 0.14 and 0.99, while the average PIC value was 0.52. CH04g04 and CH01d03 primers with high PIC values were found to be useful in studies on the determination of genetic diversity in hawthorn (Crataegus spp.). The study may have provided important information on the inter- and intraspecific genetic variation of seed propagated hawthorn genotypes and emphasizes the importance of the protection and utilization of seed-propagated hawthorn genetic resources.