| Abstract Detail
Conservation Biology Rogenski, Christina [1], Smith, Marian [1], Esselman, Elizabeth [1]. ISSR Marker Diversity of Astragalus crassicarpus var. trichocalyx in Illinois and Missouri Populations. Astragalus crassicarpus var. trichocalyx is a perennial plant that occurs in the Great Plains on prairies, woodlands, hills and riverbanks. The species was considered extirpated from Illinois until it was rediscovered in 1987 in Jersey County; it is now on the state list of endangered plant species. A. crassicarpus populations in Illinois are restricted to a small area of three prairie sites, severely restricting gene flow or seed dispersal between populations; all sites occur within a small geographic area. These factors increase the threat of extinction for the species. Conversely, A. crassicarpus exists in several large successful populations in Missouri. If conservation strategies are to be developed, an understanding of the genetic variation of the species in successful and endangered populations is essential. One way to estimate the amount of genetic diversity in populations is through the use of molecular markers. ISSRs (inter simple sequence repeats) have proven useful in genetic diversity studies. Using ISSRs we determined that the isolated populations of A. crassicarpus in Illinois have lower genetic diversity than a more successful population in Missouri.
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1 - Southern Illinois University, Department of Biological Sciences, Box 1651, Edwardsville, Illinois, 62026-1651, USA
Keywords:
Astragalus
ISSR
.
Presentation Type: Poster:Posters for Topics
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P65003
Abstract ID:1245 |
