Genetic variation among Brassica rapa subsp. rapa genotypes growing in Malatya/Türkiye

In this study, the genetic variation of 18 Brassica rapa subsp. rapa genotypes grown in Malatya was determined using the inter simple sequence repeat - polymerase chain reaciton (ISSR-PCR). Using nine ISSR primers, a total of 73 bands were obtained and the polymorphism rate was 91.78%. The mean polymorphism information content value was determined as 0.3319. The mean gene diversity (H) value was determined as 0.4276. The mean major allele frequency value was determined as 0.6531. Similarity index values were determined to be between 0.0928 and 1.0924. The unweighted pair group method with arithmetic mean (UPGMA) dendrogram consisted of two groups. Principal component analysis analysis and UPGMA dendrogram were compatible. In addition, the groups in the phylogenetic trees were partially compatible with geographical distribution. Our results suggest that ISSR-PCR analysis is a suitable approach for breeding Brassica rapa subsp. rapa genotypes and developing different cultivars.