Effects of fragmentation phenomena on the genetic structure and gene flow in Centaurea cineraria group (Asteraceae) in the Mediterranean Basin

摘要: The complex history of the Mediterranean region illustrates how ancient and recent phenomena are closely associated with species distribution creation phylogeographic divisions within flora. A good model to explore genetic consequences fragmentation can be found in Centaurea cineraria its close relatives. We applied simple sequence repeat molecular markers a dense population sampling throughout area all C. taxa study has altered structure cineraria. average gene diversity (He) was 0.286, allelic richness (Ar) 3.65 ranged from 2.15 (C. gymnocarpa) 5.25 busambarensis). FIS averaged relatively high 0.223, ranging − 0.724 aeolica subsp. 0.589 leucadea. Our results indicate that habitat over several generations reduced heterozygosity due random drift populations This heterozy...