Translator Disclaimer
1 January 2003 The Evolutionary and Taxonomic Implications of RAPD Data on the Genetic Relationships of Mimulus michiganensis (comb. et stat. nov.: Scrophulariaceae)
Amanda L. Posto, L. Alan Prather
Author Affiliations +
Abstract

Genetic relationships of Mimulus michiganensis comb. et stat. nov., formerly known as M. glabratus var. michiganensis, and two related species that have been implicated in its origin, M. glabratus var. jamesii and M. guttatus, were studied using random amplified polymorphic DNA (RAPD) markers. Genetic similarities were calculated based on the RAPD data using Jaccard's coefficient and used to construct a UPGMA phenogram. All individuals of M. michiganensis were highly similar to each other and formed a distinct cluster in the phenogram. This cluster was nested among the individuals of M. glabratus var. jamesii, and the resulting cluster was, in turn, nested within the individuals of M. guttatus. These findings, in agreement with earlier morphological and crossing studies, support the elevation of the taxon in rank from variety to species; accordingly, the new combination M. michiganensis was established. No evidence was found to support earlier hypotheses of a role of M. guttatus in the origin of M. michiganensis through hybridization with M. glabratus var. jamesii or through direct ancestry via an aneuploidy event. The results are consistent with a close relationship between M. michiganensis and M. glabratus var. jamesii.

Communicating Editor: Thomas G. Lammers

Amanda L. Posto and L. Alan Prather "The Evolutionary and Taxonomic Implications of RAPD Data on the Genetic Relationships of Mimulus michiganensis (comb. et stat. nov.: Scrophulariaceae)," Systematic Botany 28(1), 172-178, (1 January 2003). https://doi.org/10.1043/0363-6445-28.1.172
Published: 1 January 2003
JOURNAL ARTICLE
7 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top