Summary
Six Festuca rubra populations from Europe and Scandinavia were studied for variation at three isozyme loci; phosphoglucoisomerase (PGI-2), glutamate oxaloacetate transaminase (GOT-3) and superoxide dismutase (SOD-1). Seven alleles were found at the Pgi-2 locus, four at the Got-3 locus and five at the Sod-1 locus. Most plants were heterozygous and up to five alleles were found in the same plant at the Pgi-2 locus. Each population could be distinguished by the presence or absence of certain alleles or by differences in the frequencies of the alleles present. Values for the Shannon diversity index were calculated which showed that there was considerable heterogeneity both within and between loci. In general, 53% of this diversity could be attributed to within population variation.
Key words
allopolyploid Festuca rubra isozyme study polymorphismPreview
Unable to display preview. Download preview PDF.
References
- Adams, W.T. & R.W. Allard, 1977. Effect of polyploidy on phosphoglucoisomerase diversity in Festuca microstachys. Proc. Nat. Acad. Sci. (USA) 74: 1652–1656.Google Scholar
- Cahn, M.A. & J.L. Harper, 1976. The biology of the leaf mark polymorphism in Trifolium repens L. 1. Distribution of phenotypes at a local scale. Heredity 37: 309–325.Google Scholar
- Gottlieb, L.D. & N.F. Weedon, 1981. Correlation between subcellular location and phosphoglucoisomerase variablity. Evolution 35: 1019–1022.Google Scholar
- Harberd, D.J., 1961. Observations on population structure and longevity of Festuca rubra L. New Phytol. 60: 184–206.Google Scholar
- Harberd, D.J. & M. Owen, 1969. Some experimental observations on the clone structure of a natural population of Festuca rubra L. New Phytol. 68: 93–104.Google Scholar
- Hubbard, C.E., 1984. Grasses. 3rd Ed. Penguin.Google Scholar
- Humphreys, M.W., 1989. The controlled introgression of Festuca arundinacea genes into Lolium multiflorum. Euphytica 42: 105–116.Google Scholar
- Lewis, E.J., M.W. Humphreys & M.P. Caton, 1980. Disomic inheritance in Festuca arundinacea Schreb. Z. Pflanzenzüchtg 84: 335–341.Google Scholar
- Lewontin, R.C., 1972. The apportionment of human diversity. In: Dobzhansky, T., M.K. Hecht & W.C. Steele, (Eds). Evolutionary Biology 6: p. 381–398. Appleton-Century-Crofts, New York.Google Scholar
- Manwell, C. & C.M.A. Baker, 1970. Molecular biology and the origin of species. (University of Washington Press, Seattle, WA).Google Scholar
- Markgraf-Dannenberg, I. 1980. Festuca-In: T.G. Tutin et al., (Eds). Flora Europaea 5: p. 125–153. Cambride University Press.Google Scholar
- Silander, J.A., 1984. The genetic basis of the ecological amplitude of Spartina patens. III. Allozyme variation. Botanical Gazette 145: 569–577.Google Scholar
- Thomas, H., W.G. Morgan, M. Borrill & M. Evans, 1983. Meiotic behaviour in polyploid species of Festuca. Proc. Kew Chromosome Conf. III: p. 133–138. Allen and Unwin.Google Scholar