Local adaptation through genetic differentiation in highly fragmented Tilia cordata populations.

ABSTRACT: We assessed the level of geographic differentiation of Tilia cordata in Denmark based on tests of 91 trees selected from 12 isolated populations. We used quantitative analysis of spring phenology and population genetic analysis based on SSR markers to infer the likely historical genetic processes within and among populations. High genetic variation within and among populations was observed in spring phenology, which correlated with spring temperatures at the origin of the tested T. cordata trees. The population genetic analysis revealed significant differentiation among the populations, but with no clear sign of isolation by distance. We infer the findings as indications of ongoing fine scale selection in favor of local growth conditions made possible by limited gene flow amo

SUBMITTER: Lobo A 

PROVIDER: S-EPMC6024143 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature