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Genes 2010, 1(1), 9-22;

Asymmetric Introgressive Hybridization Among Louisiana Iris Species

Department of Genetics, Life Sciences Building, University of Georgia, Athens, GA 30602, USA
Trait Genetics and Technologies, Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268, USA
Monsanto Vegetable Seeds, 37437 California Highway 16, Woodland, CA 95695, USA
Department of Biology, Texas State University – San Marcos, San Marcos, TX 78666, USA
Author to whom correspondence should be addressed.
Received: 2 February 2010 / Revised: 5 March 2010 / Accepted: 11 March 2010 / Published: 15 March 2010
(This article belongs to the Special Issue Reticulate Evolution)
Full-Text   |   PDF [1267 KB, uploaded 15 March 2010]   |  


In this review, we discuss findings from studies carried out over the past 20+ years that document the occurrence of asymmetric introgressive hybridization in a plant clade. In particular, analyses of natural and experimental hybridization have demonstrated the consistent introgression of genes from Iris fulva into both Iris brevicaulis and Iris hexagona. Furthermore, our analyses have detected certain prezygotic and postzygotic barriers to reproduction that appear to contribute to the asymmetric introgression. Finally, our studies have determined that a portion of the genes transferred apparently affects adaptive traits. View Full-Text
Keywords: asymmetric introgressive hybridization; Louisiana Irises; segregation distortion; natural hybrid zones asymmetric introgressive hybridization; Louisiana Irises; segregation distortion; natural hybrid zones

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Arnold, M.L.; Tang, S.; Knapp, S.J.; Martin, N.H. Asymmetric Introgressive Hybridization Among Louisiana Iris Species. Genes 2010, 1, 9-22.

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