Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Genetic Variation within and Among Populations of the Narrow Endemic, Delphinium viridescens (Ranunculaceae)

Tracy S. Richter, Pamela S. Soltis and Douglas E. Soltis
American Journal of Botany
Vol. 81, No. 8 (Aug., 1994), pp. 1070-1076
Stable URL: http://www.jstor.org/stable/2445302
Page Count: 7
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Genetic Variation within and Among Populations of the Narrow Endemic, Delphinium viridescens (Ranunculaceae)
Preview not available

Abstract

Delphinium viridescens Leiberg (Ranunculaceae) is a narrow endemic, known from only 17 populations in the Wenatchee Mountains of central Washington. Electrophoretic data for ten loci and approximately 50 plants from each of the 17 populations indicate high levels of variability both within and among populations. High levels of heterozygosity, coupled with a general conformance of genotype frequencies to Hardy-Weinberg expectations, suggest that D. viridescens is an outcrossing species, and outcrossing rates range from 0.391 to 1.454. Although all populations share a suite of common alleles, interpopulational differences in allele frequency were detected. Nei's genetic identities range from 0.883 to 1.000, with a mean of 0.964, suggesting only slight differentiation among populations and at least moderate levels of interpopulational gene flow. However, FST values indicate greater interpopulational heterogeneity. The data from this study are intended for use in developing a management plan for D. viridescens, to maintain the viability of this species, and to assess the need for its listing as threatened or endangered.

Page Thumbnails

  • Thumbnail: Page 
1070
    1070
  • Thumbnail: Page 
1071
    1071
  • Thumbnail: Page 
1072
    1072
  • Thumbnail: Page 
1073
    1073
  • Thumbnail: Page 
1074
    1074
  • Thumbnail: Page 
1075
    1075
  • Thumbnail: Page 
1076
    1076