Abstract
A simple classification of the stand characteristics from where open-pollinated seed of Eucalyptus globulus Labill. ssp. globulus has been collected was incorporated in a genetic evaluation model in an attempt to account for the different levels of inbreeding in native stands. Parent trees were grouped into four classes of local stand type, ranging from isolated trees to dense stands. The inclusion of stand type in the model improved significantly the fit and caused a reduction of 4 to 13% in the heritability. Growth was clearly depressed in progeny from isolated trees or remnant stands. Levels of abnormalities in the seedlings varied slightly amongst stand types (p=0.11) but the trend was less obvious. Results suggest that stand type classification accounted for some of the selfing and neighbourhood inbreeding in open-pollinated families. Correlations between breeding values estimated with and without stand type in the model were usually above 0.95 so selection efficiency is likely to be little affected. The approach followed in this paper seems to be a pragmatic way of correcting between potential differences in the levels of inbreeding depression amongst families.
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Askew, G.R. and El-Kassaby, Y.A. 1994. Estimation of relationship coefficients among progeny derived from wind-pollinated orchard seeds. Theor. Appl. Genet. 88: 267–272.
Borralho, N.M.G. 1994. Heterogeneous selfing rates and dominance effects in estimating heritabilities from open-pollinated progeny. Can. J. For. Res. 24: 1079–1082.
Borralho, N.M.G., Kanowski, P.J. and Cotterill, P.P. 1992. Genetic control of growth of Eucalyptus globulus in Portugal. I. Genetic and phenotypic parameters. Silvae Genet. 41: 39–45.
Coates, D.J. and Sokolowski, R.E. 1989. Geographic patterns of genetic diversity in Karri (Eucalyptus diversicolor F. Muell.).Aust. J. Bot. 37: 145–156.
Dean, G.H., French, J. and Tibbits, W.N. 1990. Variation in pulp making characteristics in a field trial of Eucalyptus globulus. In: Proc., 44th Annual Appita General Conference, Rotorua, New Zealand, April 1990.
Fripp, Y.J. 1982. Allozyme variation and mating system in two populations of Eucalyptus kitsoniana (Luehm.) Maiden. Aust. For. Res. 13: 1–10.
Gardiner, C.A. and Crawford, D.A. 1987. 1987 Seed Collections of Eucalyptus globulus subsp. globulus for tree improvement purposes. CSIRO Division of Forest Research: Canberra. Mimeo.
Gardiner, C.A. and Crawford, D.A. 1988. 1988 Seed Collections of Eucalyptus globulus subsp. globulus for tree improvement purposes. CSIRO Division of Forest Research, Canberra. Mimeo.
Griffin, A.R. and Cotterill, P.P. 1988. Genetic variation in growth of outcrossed, selfed and open-pollinated progenies of Eucalyptus regnans and some implications for breeding strategy. Silvae Genet. 37: 124–131.
Hardner, C.M. and Potts, B.M. 1994. Inbreeding depression and changes in variation after selfing Eucalyptus globulus subsp. globulus. Silvae Genet. 43: 47–54.
Henderson, C.R. 1984. Applications of Linear Models in Animal Breeding, University of Guelph.
Hodgson, L.M. 1976. Some aspects of flowering and reproductive behaviour in Eucalyptus grandis (Hill) Maiden at J.D.M. Keet Forest Research Station. 2. The fruit, seedlings, self fertility, selfing and inbreeding effects. S. A. For. J. 98: 32–43.
Hopper, S.D. 1993. Plant taxonomy and genetic resources: foundations for conservation, pp. 269–85. In: Moritz, C. and Kikkawa, J. (eds) Conservation Biology in Australia and Oceania. Surrey Beaty & Sons, Chipping Norton.
Jarvis, S., Borralho, N.M.G. and Potts, B.M. 1995. Implementation of a multivariate BLUP model for genetic evaluation of Eucalyptus globulus in Australia, pp. 212–216. In: Potts, B.M., Borralho, N.M.G., Reid, J.B., Cromer, R.N., Tibbits, W.N. and Raymond, C.A. (Eds) Eucalypt Plantations: Improving Fibre Yield and Quality. Proc. CRC-IUFRO Conf., Hobart, 19–24 February 1995. CRC Temperate Hardwood Forestry, Hobart, Australia.
Jordan, G.J., Borralho, N.M.G. Tilyard, P. and Potts, B.M. 1994. Identification of races in Eucalyptus globulus ssp globulus based on growth traits in Tasmania and geographic distribution. Silvae Genet. 43: 292–298.
Jordan, G.J., Potts, B.M., Kirkpatrick, J.B. and Gardiner, C. 1993. Variation in the Eucalyptus globulus revisited. Aust. J. Bot. 41: 763–785.
Ladiges, P.Y. and Ashton, D.H. 1974. Variation in some central Victorian populations of Eucalyptus viminalis Labill. Aust. J. Bot. 22: 81–102.
Ladiges, P.Y. 1974. Differentiation in some populations of Eucalyptus viminalis Labill. in relation to factors affecting seedling establishment. Aust. J. Bot. 22: 471–487.
Meyer, K. 1991. DFREML Version 2.0—Programs to Estimate Variance Components by Restricted Maximum Likelihood Using a Derivative-free Algorithm. User Notes. Animal Genetics and Breeding Unit University of New England: Armidale, N.S.W. Mimeo.
Moran, G.F. and Bell, J.C. 1983. Eucalyptus, pp. 423–441. In: Tanksley, S.D. and Orton, T.J. (Eds) Isozymes in Plant Genetics and Breeding. Elsevier, Amsterdam.
Moran, G.F., Bell, J.C. and Griffin, A.R. 1989. Reduction in levels of inbreeding in a seed orchard of Eucalyptus regnans F. Muell. compared with natural populations. Silvae Genet. 38: 32–36.
Potts, B.M. and Jordan, G.J. 1994. Spatial pattern and scale of variation in Eucalyptus globulus Labill. ssp globulus: Variation in seedling abnormalities and early growth. Aust. J. Bot. 42: 471–492.
Potts, B.M. and Savva, M. 1988. Self-incompatibility in Eucalyptus. Pollination ‘88’.In: Knox, R.B., Sing, M.B. and Troiani, L.F. (Eds)_Plant Cell Biology Research Centre, University of Melbourne, Melbourne.
Prober, S.M. and Brown, A.H.D. 1994. Conservation of the grassy white box woodlands 1. Population genetics and fragmentation of Eucalyptus albens. Cons. Biol. 8: 1003–1013.
Pryor, L.D. 1957. Variation in Snow Gum (Eucalyptus pauciflora. Sieb.). Proceedings of the Linnean Society of New South Wales. 81: 299–305.
Sampson, J.F., Hopper, S.D. and James, S.H. 1989. The mating system and population genetic structure in a bird-pollinated mallee, Eucalyptus rhodantha. Heredity 63: 383–393.
Searle, S.R. 1987. Linear Models for Unbalanced Data. John Wiley & Sons. New York. 536 p.
Shaw, R.G. 1991. The comparison of quantitative genetic parameters between populations. Evolution 45: 143–151.
Squillace, A.E. 1974. Average genetic correlation among off-spring from open-pollinated forest trees. Silvae Genet. 23: 149–155.
Volker, P.W., Dean, C.A. Tibbits, W.N. and Ravenwood, I.C. 1990. Genetic parameters and gains expected from selection in Eucalyptus globulus in Tasmania. Silvae Genet. 39: 18–21.
Woolaston, R.R., Whiteman, P.H. and Cameron, J.N. 1991. Genetic analysis of four year diameter measures in Eucalyptus globulus growing across four sites in Victoria Australia, pp. 371–379. In: Schonau, A.P.G. (Ed) Intensive Forestry: The Role of Eucalyptus, Proc. IUFRO Symp., Durban. South African Institute of Forestry, RSA.
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Borralho, N.M.G., Potts, B.M. Accounting for native stand characteristics in genetic evaluations of open-pollinated progeny from a Eucalyptus globulus base population. New Forest 11, 53–64 (1996). https://doi.org/10.1007/BF00034892
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DOI: https://doi.org/10.1007/BF00034892