Genetic diversity and population structure analyses in the Alpine plum (Prunus brigantina Vill.) confirm its affiliation to the Armeniaca section

In-depth characterization of the genetic diversity and population structure wild relatives is paramount importance for improvement biodiversity conservation, particularly crucial when crops are endangered. In this study, we sampled Alpine plum (Briançon apricot) Prunus brigantina Vill. across its natural distribution in French Alps, where populations severely fragmented size strongly impacted by humans. We analysed 71 P. samples with 24 nuclear simple sequence repeat (microsatellite) markers studied their structure, aim to inform situ conservation measures build a core collection long-term ex conservation. also examined relationships other species Prunophora subgenus, encompassing (Eurasian plums), Prunocerasus (North American plums) Armeniaca (apricots) sections, check current taxonomy. detected moderate Bayesian model–based clustering approach revealed existence three genetically differentiated clusters, endemic geographical regions which will be important measures. Based on analyses, subset 36 accessions were selected that encompasses whole allelic diversity. Using dataset cultivated apricots cherry plums (P. cerasifera) genotyped same markers, gene flow neither European armeniaca cultivars nor diploid plums. Similar previous studies, dendrograms networks placed closer section than section. Our results thus confirm classification within section; it illustrates sampling design phylogenetic studies.