Charles Heiser Special Contributed Paper Session
Kietlinski, Kiel , Pratt, Donald .
Relationships between the weedy Amaranthus hybridus and the grain amaranths.
SNP and microsatellite markers were utilized to investigate the relationship between the grain amaranths and putative weedy progenitor species (A. hybridus and A. quitensis). A total of 56 amaranth populations from five species were selected from the USDAs GRIN database based upon geographic distributions, across North and South America, and complete passport data. The 258 tested individuals yielded five complete microsatellite loci (49 alleles) and 73 complete SNP loci (146 alleles). Data analysis indicates that the populations segregate into three distinct groupings, based on geography (U.S., Mexico/Central America, and South America) rather than traditional taxonomic species (A. caudatus, A. cruentus, A. hypochondriacus, A. hybridus and A. quitensis). We detected multiple possible long distance dispersal events.
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1 - Stephen F. Austin State University, Box 13003 SFA Station, Nacogdoches, TX, 75962, USA
Presentation Type: Oral Paper:Papers for Topics
Location: Lindell D/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 1:45 PM