Asymmetric introgressive hybridization among louisiana iris species.
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.
Department of Genetics, Life Sciences Building, University of Georgia, Athens, GA 30602, USA. arnold@plantbio.uga.edu.
Michael L
ML
Arnold
Trait Genetics and Technologies, Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268, USA. stang3@dow.com.
Shunxue
S
Tang
Monsanto Vegetable Seeds, 37437 California Highway 16, Woodland, CA 95695, USA. steve.knapp@monsanto.com.
Steven J
SJ
Knapp
Department of Biology, Texas State University - San Marcos, San Marcos, TX 78666, USA. nm14@txstate.edu.
Noland H
NH
Martin