Genetic diversity and connectivity in fragmented populations of Rhinanthus minor in two regions with contrasting land-use

摘要: Knowledge of genetic diversity and connectivity within between populations specialist meadow plants is crucial to developing effective conservation strategies at the landscape-scale. This study investigated levels within, gene flow a key annual species, Rhinanthus minor in protected meadows landscape matrix sites two contrasting regions. Possible barriers were also analysed. Leaf material from 714 individuals an extensively managed upland region intensively lowland UK was genotyped using microsatellite markers. Genetic similar regions (He = 0.48 0.44). FST values indicated population differentiation both but estimate higher (FST = 0.28) than (FST = 0.19); evidence global structure revealed spatial principal components analysis maximum likelihood effects model did not identify significant predictors after testing Euclidean geographic distance, land cover elevation. Conservation should aim maintain large enhance diversity. At same time focus be on existing additional species-rich grassland fragments, particularly areas intensive land-use, if retained.