Journal
GENES
Volume 1, Issue 1, Pages 9-22Publisher
MDPI AG
DOI: 10.3390/genes1010009
Keywords
asymmetric introgressive hybridization; Louisiana Irises; segregation distortion; natural hybrid zones
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Funding
- National Science Foundation
- National Science Foundation [DEB-0949424]
- Office of the Vice President for Research at the University of Georgia
- Georgia Research Alliance
- Society for Louisiana Irises
- American Iris Society
- Direct For Biological Sciences
- Division Of Environmental Biology [0949424] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [0816905, 0949479] Funding Source: National Science Foundation
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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.
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