Niche shifts and localized competitive dynamics influence the persistence and distribution of polyploids in the genus Achillea (Asteraceae).

ABSTRACT:

Background and aims

Competition with sympatric diploid progenitor(s) hinders the persistence of polyploids. The hypothesis that polyploids escape from competition through niche shifts has been widely tested; however, niche escape is unlikely to completely avoid competition. Given species growing in less favourable environments probably have weaker competitive abilities, we hypothesize that polyploid populations tend to persist in areas where their progenitors have relatively low habitat suitability.

Methods

This study investigated two sibling allopolyploid species, Achillea alpina and A. wilsoniana of the daisy family, which originated independently from the same two parental species. We explored the patterns of niche shifts between the polyploids and their progenitors by us

SUBMITTER: Lu WX 

PROVIDER: S-EPMC12064431 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature