Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte.

ABSTRACT:

Background

Mating system is one of the major determinants of intra- and interspecific genetic structure, but may vary within and between plant populations. Our study model included all known populations of Moehringia tommasinii (Caryophyllaceae), a narrow endemic plant inhabiting rock crevices in the northwestern Adriatic, and some populations of co-occurring and widespread M. muscosa, an ecologically divergent relative with an overlapping flowering period. We performed reciprocal crosses within and between taxa and used molecular markers to assess the extent of gene flow within and between populations and taxa. Using coefficient of inbreeding, population size, seed weight, pollen-to-ovule ratio, and flower display size, we also looked for evidence of a selfing syndrome.

Results

SUBMITTER: Surina B 

PROVIDER: S-EPMC10411015 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature