Abstract
The purpose of this paper is to produce a classification of theHordeum murinum complex. Using an experimental design to account for the environmental component of the phenotypic variation, material from sources throughout the old-world range ofH. murinum was grown in a common environment. Eight morphological characters were measured on the resulting triplets (i.e., the central and lateral florets, glumes and rachis internode). Clustering, variance and discriminants analyses of these data suggest that there are three distinct groups. This classification is then examined for consistency with hypotheses obtained from the work of other researchers and discussed in light of the known biology of the plants. An identification key to members of the complex using the triplet characters is provided.
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References
Baum, B. R., Lefkovitch, L. P., 1973: A numerical taxonomic study of phylogenetic and phenetic relationships in some cultivated barleys using known pedigrees. — Syst. Zool.22, 118–131.
Booth, T. A., Richards, A. J., 1976: Studies in theHordeum murinum aggregate. 1. Morphology. — Bot. J. Linn. Soc.72, 149–159.
Cocks, P. S., Boyce, K. G., Kloot, P. M., 1976: TheHordeum murinum complex in Australia. — Austral. J. Bot.24, 651–662.
Covas, G., 1949: Taxonomic observations on North American species ofHordeum. — Madrano10, 1–21.
Davison, A. W., 1970: The ecology ofHordeum murinum L. I. Analysis of distribution in Britain. — J. Ecol.58, 453–466.
—, 1971: The ecology ofHordeum murinum L. II. The ruderal habit. — J. Ecol.59, 493–506.
Ehrlich, P. R., 1961: Has the biological species concept outlived its usefulness? — Syst. Zool.10, 167–176.
Giles, B. E., 1984: A comparison between quantitative and biochemical variation in the wild barleyHordeum murinum. — Evolution38, 34–41.
Hubbard, C. E., 1954: Grasses. — London: Penguin Books.
Humphries, C. J., 1980:Hordeum. — In:Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M., Web, D. A., (Eds.): Flora Europea5. — Cambridge: Cambridge University Press.
Kendall, M. G., Stuart, A., Ord, J. K., 1982: The Advanced Theory of Statistics3. 4th edition. — London: Griffin.
Lefkovitch, L. P., 1976: Hierarchical clustering from principal coordinates: an efficient method for small to very large numbers of objects. — Math. Biosc.31, 157–174.
—, 1982: Conditional clusters, musters and probability. — Math. Biosc.60, 207–234.
Liu, C. L., Schooler, A. B., 1965:Hordeum depressum crosses with theHordeum murinum complex. — Canad. J. Genet. Cytol.7, 291–295.
Morrison, J. W., 1958:Hordeum murinum in Holland. — Acta Bot. Neerl.7, 654–664.
Rajhathy, T., Morrison, J. W., 1962: Cytogenetic studies in the genusHordeum VII. Themurinum complex. — Canad. J. Genet. Cytol.4, 240–247.
Sneath, P. H. A., Sokal, R. R., 1973: Numerical Taxonomy. — The Principles and Practice of Numerical Classification. — San Francisco: W. H. Freeman and Company.
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Giles, B.E., Lefkovitch, L.P. A taxonomic investigation of theHordeum murinum Complex (Poaceae). Pl Syst Evol 153, 181–197 (1986). https://doi.org/10.1007/BF00983686
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DOI: https://doi.org/10.1007/BF00983686