Conservation Genetics

, Volume 4, Issue 3, pp 337–352

Conservation of genetic diversity in the endangered plant Eriogonum ovalifolium var. vineum (Polygonaceae)

Article

DOI: 10.1023/A:1024017029933

Cite this article as:
Neel, M.C. & Ellstrand, N.C. Conservation Genetics (2003) 4: 337. doi:10.1023/A:1024017029933

Abstract

The purpose of his research was to describethe organization of genetic variation in thefederally endangered plant taxon Eriogonumovalifolium var. vineum using allozymes. Such information can help prioritize sites andmanagement choices for capturing andmaintaining genetic variation and can reducethe number of populations necessary to committo conservation, thus reducing costs andconflicts with competing land uses. Information on genetic diversity patterns alsoprovides insight into evolutionary anddemographic history of a taxon which canprovide means to assess future risk of erosionof diversity. Similar to other Eriogonumovalifolium varieties, E. ovalifoliumvar. vineum is diverse atboth the taxon (proportion of polymorphic loci[P] = 0.55 and alleles per locus [A] =5.45 [SD = 2.5]) and population (P = 0.56 [SD =0.11] and A = 2.68 [SD = 0.35]) levels. Gene diversity (He) withinpopulations averaged 0.19 (SD = 0.03). Wefound some evidence for limited clonalreproduction within populations. Populationswere moderately differentiated from one another(ΘS = 0.14) and showed moderatedeviations from Hardy-Weinberg equilibriumwithin populations (f = 0.14 and F =0.19). Mean Nei's genetic distance (D)among all pairs of populations was 0.02. Populations with high levels of multiplemeasures of genetic diversity, high levels ofdifferentiation, and low levels of apparentinbreeding are suggested as conservationpriorities.

edaphic endemismendangered speciesgenetic diversity

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  1. 1.Department of Botany and Plant Sciences and Center for Conservation BiologyUniversity of CaliforniaCaliforniaUSA
  2. 2.Department of Natural Resources ConservationHoldsworth Natural Resources Center, University of MassachusettsAmherstMA