Genetic Diversity in Relict and Fragmented Populations of Ulmus glabra Hudson in the Central System of the Iberian Peninsula

摘要: Ulmus glabra Hudson, or Wych elm, occurs as fragmented and relict natural populations in the Central System, which acts a refugium Iberian Peninsula. Considering importance of System U. glabra, main objective was to assess their genetic diversity using nuclear microsatellite markers. A total 360 different genotypes were detected 427 individuals analyzed. elm showed highly significant differentiation (24%; p = 0.0001). Of 22 studied, population Rozas de Puerto Real (ROZ) highest values effective number alleles (2.803), mean Shannon’s (1.047) expected heterozygosity (0.590). Populations ROZ Mombeltran (MOM) observed (0.838 0.709, respectively), negative for inbreeding coefficient (−0.412 −0.575, respectively). Also, most putative hybrids (50 55) these two populations. Demographic analysis revealed signals recent (four populations) ancestral (fifteen bottlenecks. Fragmented with diminishing individuals, along anthropogenic intervention Dutch disease (DED), are threats From future perspective, information generated can be considered formulation conservation strategies System.