Abstract
Investigation of the mallee Eucalyptus rhodantha which has an irregular, protracted flowering period demonstrated that individual plants differ in fecundity and phenology and that allele frequencies in the pollen pool change during the flowering season. Allele frequencies of the pollen pool were estimated by several methods which either assumed temporal homogeneity or took flowering phenology into account. These allele frequencies were compared for their abilities to estimate t̂. The estimates of t̂ based on allele frequencies which took phenology into account were not consistently higher or better than those that did not at any of the four loci surveyed. Changes in the allele frequencies of the pollen pool during the flowering season may contribute to variation between some single-locus estimates of t̂ in E. rhodantha which assume temporal homogeneity, but it was concluded that they are not the major cause of bias.
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Ashton, D H. 1975. Studies of flowering behaviour in Eucalyptus regnans F. Muell. Aust J Bot, 23, 399–411.
Bawa, K S. 1983. Patterns of flowering in tropical plants. In Jones, C. E. and Little, R. J. (eds) Handbook of Experimental Pollination Biology, Van Nostrand-Reinhold, New York, pp. 394–410.
Bijlsma, R, Allard, R W, and Kahler, A L. 1986. Nonrandom mating in an open-pollinated maize population. Genetics, 112, 669–680.
Brown, A H D, and Allard, R W. 1970. Estimation of the mating system in open-pollinated maize populations using isozyme polymorphisms. Genetics, 66, 133–145.
Clegg, M T, Kahler, A L, and Allard, R W. 1978. Estimation of the life cycle components of selection in an experimental plant population. Genetics, 89, 765–792.
Crawford, T J. 1984. What is a population? In Shorrocks, B. (ed.) Evolutionary Ecology, Blackwell Scientific Publications, Oxford, pp. 135–173.
Ennos, R A, and Clegg, M T. 1982. Effect of population substructing on estimates of outcrossing rate in plant populations. Heredity, 48, 283–292.
Florence, R G. 1964. A comparative study of flowering seed production in six blackbutt (Eucalyptuspilularis Sm.) forest stands. Aust For, 28, 23–33.
Frankie, G W, Baker, H G, and Opler, P A. 1974. Comparative phenological studies of trees in tropical wet and dry forests in the lowlands of Costa Rica. J Ecol, 62, 881–919.
Fripp, Y J, Griffin, A R, and Moran, G F. 1987. Variation in allele frequencies in the outcross pollen pool of Eucalyptus regnans F. Muell. throughout a flowering season. Heredity, 59, 161–171.
Fyfe, J L, and Bailey, N T J. 1951. Plant breeding studies in leguminous forage crops. 1. Natural cross-breeding in winter beans. J Agric Sci, 41, 371–378.
Handel, S N, and Le Vie Mishkin, J. 1984. Temporal shifts in gene flow and seed set: evidence from an experimental population of Cucumis sativus. Evolution, 38, 1350–1357.
Kendall, M G, and Stuart, A. 1961. The Advanced Theory of Statistics, VoL 2. Inference and Relationship, Charles Griffin, London.
McNee, S. 1986. Grad Dip Nat Res Thesis, Curtin University.
Moran, G F, and Hopper, S D. 1983. Genetic diversity and the insular population structure of the rare granite rock species, Eucalyptus caesia Benth. Aust J Bot, 31, 162–172.
O'Malley, D M, and Bawa, K S. 1987. Mating system of a tropical rain forest tree species. Amer J Bot, 74, 1143–1149.
Ritland, K. 1983. Estimation of mating systems. In Tanksley, S. D. and Orton, T. J. (eds) Isozymes in Plant Genetics and Breeding, Elsevier, Amsterdam, pp. 289–302.
Ritland, K, and Jain, S. 1981. A model for the estimation of outcrossing rate and gene frequencies using n independent loci. Heredity, 47, 35–52.
Sampson, J F, Hopper, S D, and James, S H. 1989. The mating system and population genetic structure in a bird-pollinated malice, Eucalptus rhodantha. Heredity, 63, 383–393.
Schoen, D S, Clegg, M T . 1984. Estimation of mating system parameters when outcrossing events are correlated. Proc Natl Acad Sci USA, 81, 5258–5262.
Stam, P. 1983. The evolution of reproductive isolation in closely adjacent plant populations through differential flowering. Heredity, 50, 105–118.
Stern, K, and Roche, L. 1974. Genetics of Forest Ecosystems. Chapman and Hall, London.
Wheelwright, N T. 1985. Competition for dispersers, and the timing of flowering and fruiting in a guild of tropical trees. Oikos, 44, 465–477.
Yeh, F C, Brune, A, Cheliak, W M, and Chipman, D C. 1983. Mating system of Eucalyptus citriodora in a seed production area. Can J For Res, 13, 1051–1055.
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Sampson, J., Hopper, S. & James, S. Temporal variation in allele frequencies in the pollen pool of Eucalyptus rhodantha. Heredity 65, 189–199 (1990). https://doi.org/10.1038/hdy.1990.87
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DOI: https://doi.org/10.1038/hdy.1990.87
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