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Abstract Detail


Systematics Section / ASPT

Maureira Butler, Ivan J. [1], Pfeil, Bernard E. [2], Muangprom, Amorntip [3], Osborn, Thomas C. [4], Doyle, Jeff J. [5].

The hybrid history of Medicago lineages.

The phylogenetic history of Medicago was examined using two nuclear genes (CNGC5 and β-cop). The results of several analyses revealed that extensive robustly supported incongruence exists among these genes, the cause of which we seek to explain. After rejecting several processes, hybridization and lineage sorting of ancestral polymorphisms remained as the most likely factors promoting incongruence. Using a coalescence method, we rejected lineage sorting alone as an explanation of the differences among gene trees. The results indicate that hybridization has been common and ongoing among lineages since the origin of Medicago.


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1 - Agro aquaculture Nutritional Genomic Center, P.O Box 58-D, Temuco, Chile
2 - CSIRO Plant Industry, GPO Box 1600, Canberra, ACT, 2601, Australia
3 - National Center for Genetic Engineering and Biotechnology, Klong Luang, Thailand
4 - Seminis Vegetable Seeds
5 - Cornell University, L.H. Bailey Hortorium, Department of Plant Biology, Ithaca, New York, 14853, USA

Keywords:
none specified

Presentation Type: Poster:Posters for Sections
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P59022
Abstract ID:2021


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