Abstract
In this study, inter-simple sequence repeats (ISSRs) and sequence-related amplified polymorphism (SRAP) were applied to assess the genetic diversity in 38 species of Chrysanthemum and related genera. A total of 204 and 567 bands were amplified by 24 ISSR and 25 SRAP primers, of which 196 (97%) and 557 (99%) were polymorphic, respectively. The ISSR-based genetic similarity ranged from 0.016 to 0.886 and averaged 0.201, while the SRAP-based genetic similarity varied from 0.010 to 0.811 and averaged 0.122. Both the ISSR and SRAP techniques revealed similar clustering patterns and grouped species of Chrysanthemum and Ajania together. The results of principal coordinate analysis corroborated the unweighted pair group method with arithmetic average clustering. Additionally, results from ISSR and SRAP data were significantly correlated (r = 0.89, P < 0.001). Knowledge about genetic diversity among species can aid the transfer of traits of interest from the wild into cultivated chrysanthemum in future distant interspecific breeding.
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