Reconstructing an historical pollination syndrome: keel flowers.

ABSTRACT:

Background

Keel flowers are bilaterally symmetrical, pentamerous flowers with three different petal types and reproductive organs enclosed by keel petals; generally there is also connation of floral parts such as stamens and keel petals. In this study, the evolution of keel flowers within the order Fabales is explored to investigate whether the establishment of this flower type within one of the species-rich families, the Fabaceae (Leguminosae), preceded and could have influenced the evolution of keel flowers in the Polygalaceae. We conducted molecular dating, and ancestral area and ancestral state analyses for a phylogeny constructed for 678 taxa using published matK, rbcL and trnL plastid gene regions.

Results

We reveal the temporal and spatial origins of keel flowers and

SUBMITTER: Uluer DA 

PROVIDER: S-EPMC9004149 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature