Natural selection and outbreeding depression suggest adaptive differentiation in the invasive range of a clonal plant.

ABSTRACT: Analyses of phenotypic selection and demography in field populations are powerful ways to establishing the potential role of natural selection in shaping evolution during biological invasions. Here we use experimental F₂ crosses between native and introduced populations of Mimulus guttatus to estimate the pattern of natural selection in part of its introduced range, and to seek evidence of outbreeding depression of colonists. The F₂s combined the genome of an introduced population with the genome of either native or introduced populations. We found that the introduced × introduced cross had the fastest population growth rate owing to increased winter survival, clonality and seed production. Our analysis also revealed that selection through sexual fitness favour

SUBMITTER: Pantoja PO 

PROVIDER: S-EPMC6053932 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature