Abstract
The present study evaluated genetic diversity of Lithuanian populations of Lythrum salicaria in relation to parameters of riparian environment. Growing along Nemunas, Seaside and Lielupė river basins, 15 populations were examined using amplified fragment length polymorphism markers. Molecular data were related to the river basins, type of land use and cover, natural vice versa regulated fragments of the rivers. Population mean genetic diversity parameters were as follows: percentage of polymorphic loci (57.2), expected heterozygosity (0.183), polymorphismc information content (0.218). Mantel test revealed correlation (R2 = 0.0986, p = 0.01) between genetic and geographic distance of populations. Greater genetic diversity within, rather than among populations (ΦPT = 0.213) was observed. According to the Bayesian clustering, studied populations are admixtures of two gene pools. Analysis of molecular variance revealed significant differentiation between populations belonging to distinct river basins, between populations from natural vs. regulated fragments of the rivers.
Highlights
Riparian habitats are very complex and important part of terrestrial ecosystem
Our pilot study of Lithuanian populations of L. salicaria extends information concerning amplified fragment length polymorphism (AFLP) profile for this species in the region of Baltic States
Genetic variation is an important part of biodiversity and should be considered in conservation of natural genetic resources
Summary
Riparian habitats are very complex and important part of terrestrial ecosystem. Their plants are distinct by big variety of life forms, and are of high economic, ecological aesthetic value (Riis et al, 2020; Nawieśniak-Caesar et al, 2019). When compared to land plants, riparian vegetation is exposed to a much stronger effect of anthropogenic factors (Kalusová et al, 2017). The current millennium focuses on the state of threatened. Jocienė et al Relationship between genetic and environmental characteristics of Lithuanian populations of
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