Exploring the diversity of sexual systems and pollination in Brazilian Cleomaceae species

Daniele F. Parma, Kaik F. Souza, Marcelo G.M.V. Vaz, Sandy Bastos Martins, Wagner L. Araújo, Agustin Zsögön, Andreas P.M. Weber, Eric Schranz, Adriano Nunes-Nesi*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The family Cleomaceae is characterized by remarkable floral diversity and abundant nectar and pollen production. In this study, we evaluated the flower functional characteristics associated with the floral diversity of 10 Cleomaceae species, in addition to respectively seven and five accessions of Tarenaya hassleriana and T. longicarpa. The flowers were examined through five types of crosses and thus we determined the most efficient type of crossing based on the number of seeds. In addition, we evaluated pollen limitation, self-incompatibility, self-pollination and explored the possible effects on seed germination. The species can be grouped into three groups based on sexual systems: andromonoecious, hermaphroditism (chasmogamous and cleistogamous), and polygamomonoecious flowers. Gynandropsis gynandra, T. aculeata, T. diffusa, and T. microcarpa exhibited autogamy, whereas the other species did not. Overall, hand cross-pollination produced the highest seed yield, followed by open pollination. Self-pollination produced the lowest number of seeds, with no seed production noted in 16 accessions. Interestingly, the pollination type did not affect seed germination. Together, these results indicate the potential of the Cleomaceae family as a source of information regarding mechanisms involved in the determination of reproductive traits in plants.

Original languageEnglish
Article number152245
Number of pages10
JournalFlora: Morphology, Distribution, Functional Ecology of Plants
Volume300
DOIs
Publication statusPublished - Mar 2023

Keywords

  • Andromonoecy
  • Cleoserrata
  • Dichogamy
  • Gynandropsis
  • Herkogamy
  • Tarenaya

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