Intraspecific breakdown of self-incompatibility in Physalis acutifolia (Solanaceae).

ABSTRACT: Variation in mating systems is prevalent throughout angiosperms, with many transitions between outcrossing and selfing above and below the species level. This study documents a new case of an intraspecific breakdown of self-incompatibility in a wild relative of tomatillo, Physalis acutifolia. We used controlled greenhouse crosses to identify self-incompatible (SI) and self-compatible (SC) individuals grown from seed sampled across seven sites across Arizona and New Mexico. We measured 14 flower and fruit traits to test for trait variation associated with mating system. We also quantified pollen tube growth in vivo and tested for the presence of the S-RNase proteins in SI and SC styles. We found that seed from six of the seven sites produced SI individuals that terminated self

SUBMITTER: Pretz C 

PROVIDER: S-EPMC8783618 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature