Asymmetric Introgressive Hybridization Among Louisiana Iris Species

Genes

Michael L. Arnold³  Shunxue Tang²  Steven J. Knapp¹ 

[1] Monsanto Vegetable Seeds, 37437 California Highway 16, Woodland, CA 95695, USA; E-Mail:;Trait Genetics and Technologies, Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268, USA; E-Mail:;Department of Genetics, Life Sciences Building, University of Georgia, Athens, GA 30602, USA

关键词: asymmetric introgressive hybridization;    Louisiana Irises;    segregation distortion;    natural hybrid zones;   

DOI  :  10.3390/genes1010009

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland