Dimorphism, polyploidy, and genetic diversity in the Australian endemic Lycium australe (Solanaceae)

Whole genome duplication is often associated with the evolution of dimorphic sexual systems; however, the association is not universal, and the evolutionary pathway(s) underlying the association remain unresolved. The genus Lycium has been demonstrated as a useful system for investigating ploidy and sexual system variation. Here, we describe ploidy and floral variation in Lycium australe and document genetic diversity and dimorphism across its range.