- THIS ARTICLE
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Rausher, M. D.
- Articles by Fry, J. D.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Rausher, M. D.
- Articles by Fry, J. D.
Genetics, Vol 134, 1237-1247, Copyright © 1993
INVESTIGATIONS |
Effects of a Locus Affecting Floral Pigmentation in Ipomoea purpurea on Female Fitness Components
M. D. Rausher and J. D. Fry
Department of Zoology, Duke University, Durham, North Carolina 27706
A locus influencing floral pigment intensity in the morning glory, Ipomoea purpurea, is polymorphic throughout the southeastern United States. Previous work has suggested that the white allele at this locus has a transmission advantage during mating because of the effect of flower color on pollinator behavior. The experiment described here was designed to determine whether other effects of the W locus may contribute an opposing selective advantage to the dark allele. Dark homozygotes were vegetatively smaller and produced fewer flowers, seed capsules and seeds than either light heterozygotes or white homozygotes. In addition, dark homozygotes produced smaller seeds than heterozygotes, and there is some indication that white homozygotes also produced smaller seeds than heterozygotes. Pleiotropic effects on seed number thus do not seem to contribute to selection opposing the mating advantage associated with the white allele. However, pleiotropic effects on seed size might contribute to overdominance that could stabilize the W locus polymorphism.
This article has been cited by other articles:
 |
|
 |
|
  M. A. Streisfeld and M. D. Rausher Relaxed Constraint and Evolutionary Rate Variation between Basic Helix-Loop-Helix Floral Anthocyanin Regulators in Ipomoea Mol. Biol. Evol., December 1, 2007; 24(12): 2816 - 2826. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. E. Miller, J. A. McDonald, and P. S. Manos Systematics of Ipomoea subgenus Quamoclit (Convolvulaceae) based on ITS sequence data and a Bayesian phylogenetic analysis Am. J. Botany, August 1, 2004; 91(8): 1208 - 1218. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. A. Zufall and M. D. Rausher The Genetic Basis of a Flower Color Polymorphism in the Common Morning Glory (Ipomoea purpurea) J. Hered., November 1, 2003; 94(6): 442 - 448. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. L. Stone Does anthocyanin affect outcrossing rates in Datura Stramonium (Solanaceae)? Am. J. Botany, March 1, 2000; 87(3): 348 - 354. [Abstract] [Full Text]
|
|