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Population Genetics of the Cedar-Glade Endemic Astragalus bibullatus (Fabaceae) Using Isozymes
Carol J. Baskauf and Sharon Snapp
Annals of the Missouri Botanical Garden
Vol. 85, No. 1 (1998), pp. 90-96
Published by: Missouri Botanical Garden Press
Stable URL: http://www.jstor.org/stable/2991999
Page Count: 7
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The rare cedar-glade endemic Astragalus bibullatus (Fabaceae) has low levels of genetic variability both within and among populations. Within-population means across 15 isozyme loci resulted in estimates of 1.4 alleles per locus, 25.6% polymorphic loci, and 0.064 for observed heterozygosity. Populations are genetically very similar, with a low FST and genetic identity values ranging from 0.981 to 1.000. Sites where this species naturally occurs should be protected, but, considering the low levels of population differentiation, the source of transplants or seeds needed to establish new populations may not be the most critical concern.
Annals of the Missouri Botanical Garden © 1998 Missouri Botanical Garden Press