BALANCING SELECTION ON A FLORAL POLYMORPHISM
Open Access
- 1 April 2000
- Vol. 54 (2) , 691-695
- https://doi.org/10.1111/j.0014-3820.2000.tb00070.x
Abstract
The common morning glory, Ipomoea purpurea, exhibits a flower color polymorphism at the W locus throughout the southeastern North America. The W locus controls whether flowers will be darkly pigmented (WW), lightly pigmented (Ww), or white with pigmented rays (ww). In this report, we describe results of a perturbation, or convergence, experiment using five plots designed to determine whether balancing selection operates on the W locus. The pattern of gene frequency changes obtained are indicative of balancing selection operating at the W locus, providing direct evidence that both the alleles are actively maintained by selection.Keywords
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