Abstract
TwoPyxidanthera morphs of questionable taxonomic rank are described in the eastern United States. We analyzed leaf samples from ninePyxidanthera populations (four of each morph and one with intermediate morphology) for 13 allozyme loci. Our results do not support differentiation of the two morphs at the species level. Mean genetic identity among populations was high (Ī = 0.97), and typical of that found for conspecific populations. The proportion of total genetic diversity found among populations was low (GST = 0.079). Several low frequency alleles were confined to each of the morphs, being found in some of the populations of each morph, but not all.
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References
Avise, J. C., 1993: Molecular markers, natural history and evolution. — New York: Chapman & Hall.
Barton, N. H., Slatkin, M., 1986: A quasi-equilibrium theory of the distribution of rare alleles in a subdivided population. — Heredity56: 409–415.
Cheliak, W. M., Pitel, J. A., 1984: Techniques for starch gel electrophoresis of enzymes from forest tree species. Petawawa National Forestry Institute, Information Report P1-X-42. — Chalk River, Ontario, Canada: Canadian Forestry Service, Agriculture.
Crawford, D. J., 1983: Phylogenetic and systematic inferences from electrophoretic studies. — InTanksley, S. D., Orton, T. J., (Eds): Isozymes in plant breeding, part A, pp. 257–287. — Amsterdam: Elsevier.
Crow, J. F., Aoki, K., 1984: Group selection for a polygenic behavioral trait: Estimating the degree of population subdivision. — Proc. Natl. Acad. Sci. USA81: 6073–6077.
Fernald, M. L., 1950: Gray's Manual of Botany. — Portland, OR: Dioscorides.
Gottlieb, L. D., 1977: Electrophoretic evidence and plant systematics. — Ann. Missouri Bot. Gard.64: 161–180.
, 1984: Genetics and morphological evolution in plants. — Amer. Naturalist123: 681–709.
Hamrick, J. L., 1979: Genetic variation and longevity. — InSolbrig, O. T., Jain, S., Johnson, G. B., Raven, P. H., (Eds): Topics in plant population biology, pp. 84–113. — New York: Columbia University.
, 1989: Allozyme diversity in plant species. — InBrown, A. H. D., Clegg, M. T., Kahler, A. L., Weir, B. S., (Eds): Plant population genetics, breeding and genetic resources, pp. 43–63. — Sunderland, MA: Sinauer.
, 1992: Factors influencing levels of genetic diversity in woody plant species. — New Forests6: 95–124.
Hedrick, P. W., 1985: Genetics of populations. — Boston, MA: Jones & Bartlett.
Li, C. C., Horvitz, D. G., 1953: Some methods of estimating the inbreeding coefficient. — Amer. J. Human Genetics5: 107–117.
Mitton, J. B., Linhart, Y. B., Sturgeon, K. B., Hamrick, J. L., 1979: Allozyme polymorphisms detected in mature needle tissue of ponderosa pine. — J. Heredity70: 86–89.
Nei, M., 1972: Genetic distance between populations. — Amer. Naturalist106: 283–292.
, 1973: Analysis of gene diversity in subdivided populations. — Proc. Natl. Acad. Sci. USA70: 3321–3323.
, 1977:F-statistics and analysis of gene diversity in subdivided populations. — Ann. Human Genetics41: 225–233.
Phelps, S. R., Allendorf, F. W., 1983: Genetic identity of pallid and shovelnose sturgeons (Scaphirhynchus albus andS. playorhynchus). — Copeia1983: 696–700.
Pleasants, J. M., Wendel, J. F., 1989: Genetic diversity in a clonal narrow endemic,Erythronium propullans, and in its widespread progenitor,Erythronium albidum. — Amer. J. Bot.76: 1136–1151.
Primack, R. B., Wyatt, R., 1975: Variation and taxonomy ofPyxidanthera (Diapensiaceae). — Brittonia27: 115–118.
Radford, A. E., Ahles, H. E., Bell, C. R., 1968: Manual of the vascular flora of the Carolinas. — Chapel Hill, NC: University of North Carolina.
Reynolds, J. D., 1968: Morphological studies inDiapensiaceae. I. Chromosome number and microspore development inPyxidanthera brevifolia Wells. — Bull. Torrey Bot. Club95: 653–656.
Sherman-Broyles, S. L., Gibson, J. P., Hamrick, J. L., Bucher, M. A., Gibson, M. J., 1992: Comparisons of allozyme diversity among rare and widespreadRhus species. — Syst. Bot.17: 551–559.
Slatkin, M., 1985: Rare alleles as indicators of gene flow. — Evolution39: 53–65.
Soltis, D. E., Haufler, C. H., Darrow, D. C., Gastony, G. J., 1983: Starch gel electrophoresis of ferns: a compilation of grinding buffers, gel and electrode buffers, and staining schedules. — Amer. Fern J.73: 9–27.
Turner, M. E., Stephens, J. C., Anderson, W. W., 1982: Homozygosity and patch structure in plant populations as a result of nearest-neighbor pollination. — Proc. Natl. Acad. Sci. USA79: 203–207.
Weir, B. S., Cockerham, C. C., 1984: EstimatingF-statistics for the analysis of population structure. — Evolution38: 1358–1370.
Wells, B. W., 1929: A new Pyxie from North Carolina. — J. Elisha Mitchell Soc.44: 238–239.
Wendel, J. F., Parks, C. R., 1982: Genetic control of isozyme variation inCamillia japonica L. — J. Heredity73: 197–204.
Workman, P. L., Niswander, J. D., 1970: Population studies on southwestern Indian tribes. II. Local genetic differentiation in the Papago. — Amer. J. Human Genetics22: 24–49.
Wright, S., 1931: Evolution in Mendelian populations. — Genetics16: 97–159.
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Godt, M.J.W., Hamrick, J.L. Low levels of allozyme differentiation betweenPyxidanthera (pyxie-moss) taxa (Diapensiaceae). Pl Syst Evol 195, 159–168 (1995). https://doi.org/10.1007/BF00989292
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DOI: https://doi.org/10.1007/BF00989292