Journal: International Journal of Plant Sciences

Abbreviation

Publisher

University of Chicago Press

Journal Volumes

ISSN

1058-5893
1537-5315

Description

Filters

Reset filters

Search Results

Publications 1 - 8 of 8
  • Experimental and Genetic Analysis of Selfing Reveals No Reinforcement in Phlox cuspidata
    Item type: Journal Article
    Shahid, Bushra M.; Burgin, Grace A.; Hopkins, Robin (2024)
    International Journal of Plant Sciences
    Premise of research. Reinforcement is the process through which prezygotic reproductive barriers evolve in sympatry owing to selection against hybridization between co-occurring, closely related species. The role of self-fertilization in reinforcement and reproductive isolation is uncertain, in part because its efficiency as a barrier against heterospecific mating can depend on the timing of autonomous selfing. Methodology. To investigate whether increased autonomous selfing has evolved as a mechanism for reinforcement, we compared Phlox cuspidata populations across their native Texas range using both estimates of genetic diversity and experimental manipulation with morphological measurements. Specifically, we investigated patterns of variation in floral traits and timing of selfing between individuals from allopatric populations of P. cuspidata and from populations sympatric with the closely related species Phlox drummondii. Pivotal results. We infer intermediate rates of selfing across field-collected individuals with no significant difference between allopatric and sympatric populations. Among greenhouse-grown plants, we find no differences in timing of selfing or other floral traits, including anther dehiscence timing, anther-stigma distance, autonomous selfing rate, and self-seed count, between allopatric and sympatric populations. However, our statistical analyses indicate that P. cuspidata individuals sympatric with P. drummondii seem to have generally larger flowers compared with allopatric individuals. Conclusions. Despite strong evidence of costly hybridization with P. drummondii, we find no evidence of trait divergence due to reinforcement in P. cuspidata. Although we document nearly complete autonomous self-seed set in the greenhouse, estimates of selfing rates from genetic data imply that realized selfing is much lower in nature, suggesting an opportunity for reinforcing selection to act on this trait.
  • Automated image analysis of annual rings in the roots of perennial forbs
    Item type: Journal Article
    von Arx, Georg; Dietz, Hansjoerg (2005)
    International Journal of Plant Sciences
  • Floral Scent Emission and Pollination Syndromes
    Item type: Journal Article
    Salzmann, Charlotte C.; Brown, Andrew; Schiestl, Florian P. (2006)
    International Journal of Plant Sciences
  • A Charcoalified Ovule Adapted for Wind Dispersal and Deterring Herbivory from the Late Viséan (Carboniferous) of Scotland
    Item type: Journal Article
    Scott, Andrew C.; Hilton, Jason; Galtier, Jean; et al. (2019)
    International Journal of Plant Sciences
  • New Observations and Synthesis of Paleogene Heterosporous Water Ferns
    Item type: Journal Article
    Collinson, Margaret E.; Smith, Selena Y.; van Konijnenburg-van Cittert, Johanna H.A.; et al. (2013)
    International Journal of Plant Sciences
  • Effects of genetic variation and inbreeding on volatile production in a field population of horsenettle
    Item type: Journal Article
    Delphia, Casey M.; Rohr, Jason R.; Stephenson, Andrew G.; et al. (2009)
    International Journal of Plant Sciences
  • Genetic variation in native and invasive populations of Erigeron annuus as assessed by RAPD markers
    Item type: Journal Article
    Edwards, P.J.; Frey, D.; Bailer, H.; et al. (2006)
    International Journal of Plant Sciences
  • Biogeography of discontinuously distributed hydrophytes
    Item type: Journal Article
    Les, Donald H.; Crawford, Daniel J.; Kimball, Rebecca T.; et al. (2003)
    International Journal of Plant Sciences
Publications 1 - 8 of 8