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<title>UTas ePrints - Quantitative genetic evidence that the timing of vegetative phase change in Eucalyptus globulus ssp. globulus is an adaptive trait</title>
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<meta content="Jordan, Gregory J." name="eprints.creators_name" />
<meta content="Potts, Bradley M." name="eprints.creators_name" />
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<meta content="The adaptive significance of the timing of the abrupt change in leaf form in Eucalyptus globulus Labill. spp. globulus was investigated using quantitative genetic analysis of several field trials containing open-pollinated progenies. Five large trials contained progeny from across the whole geographic range of this taxon. On this broad scale, early phase change appears to promote growth on two sites but not the other three, implying differential selection for the timing of phase change. The timing of vegetative phase change varied markedly between broad geographic regions, consistent with either adaptation to broad scale variation or historical differentiation. Data from one small trial demonstrated a genetic basis to a steep local cline in habit, in the size of plants flowering and in the height of the change in foliage type. In this trial, the progeny from an exposed coastal cliff top had markedly slower growth, earlier vegetative phase change and first flowering than the progeny from 1.5 km inland. This genetically determined combination of slow growth, early phase change and precocious flowering appears to be maintained in exposed coastal environments by current selection, and contrasts with more complex patterns of broad scale geographic variation. The genetic association of the timing of vegetative phase change with growth rate, a fitness surrogate, ranged from positive to negative at different sites. Early phase change may, for example, be favoured in warm, wet environments to reduce damage by leaf fungi, but may also be favoured on exposed dry sites to increase xeromorphy. The patterns of genetic variation in nature may thus result from multiple causes (both biotic and abiotic) and their interpretation will be complex." name="eprints.abstract" />
<meta content="2000" name="eprints.date" />
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<meta content="Australian Journal of Botany" name="eprints.publication" />
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<meta content="Ashton, D. H. and Turner, J. S. (1979). Studies on the light compensation point of Eucalyptus regnans F. Muell. Australian Journal of Botany 27, 589-607.
Baird, A. M. (1953). The life history of Callitris. Phytomorphology 3, 258-284
Barber, H. N. (1965). Selection in natural populations. Heredity 20, 551-572.
Battaglia, M. and Reid, J. B. (1993). Ontogenetic variation in frost resistance of Eucalyptus delegatensis RT Baker. Australian Journal of Botany 41, 137-141.
Beadle, C. L., McLeod, D. E., Turnbull, C. R. A., Ratkowsky, D. T. and McLeod, R. (1989). Juvenile/total foliage ratios in Eucalyptus nitens and the growth of stands and individual trees. Trees 3, 117-124.
Bell, D. T. and Williams, J. E. (1997). Eucalypt genetics and genecology. In 'Eucalypt Ecology: Individuals to Ecosystems'. (Eds J. Williams and J. Woinarski.) pp 56-91. (Cambridge University Press, Cambridge.)
Cameron, R. J. (1970). Light intensity and the growth of Eucalyptus seedlings I. Ontogenetic variation in E. fastigata. Australian Journal of Botany 18, 29-43.
Chalmers, P. (1992). 'The adaptive significance of juvenile versus adult leaves in Eucalyptus globulus'. Unpublished honours thesis. University of Tasmania.
Chambers, P. G. S., Borralho, N. M. G and Potts, B. M. (1995). Genetic analysis of survival in Eucalyptus globulus subsp. globulus. Silvae Genetica 45, 107-112.
Chambers, P. G. S., Potts, B. M. and Tilyard, P. G. (1997). The genetic control of flowering precocity in Eucalyptus globulus ssp. globulus. Silvae Genetica 46, 207-214.
Day, J. S. (1998). Light conditions and the evolution of heteroblasty (and the divaricate form) in New Zealand. New Zealand Journal of Ecology 22, 43-54.
Dungey, H. S., Potts, B. M., Carnegie, A. J. and Ades, P. K. (1997). Mycosphaerella leaf disease: Genetic variation in damage to Eucalyptus nitens, E. globulus and their F1 hybrid. Canadian Journal of Forest Research 27, 750-759.
Dutkowski, G. and Potts, B. M. (in press). Geographical patterns of genetic variation in Eucalyptus globulus ssp. globulus and a revised racial classification. Australian Journal of Botany 47.
Edwards, P. B. (1982). Do waxes on juvenile Eucalyptus leaves provide protection from grazing insects? Australian Journal of Ecology 7, 347-352.
Farrow, R. A., Floyd, R. B. and Newmann, F. G. (1994). Inter-provenance variation in resistance of Eucalyptus globulus to insect feeding. Australian Forestry 57, 65-68.
Gardiner, C. A., and Crawford, D. F. (1987). '1987 seed collections of Eucalyptus globulus subsp. globulus for tree improvement purposes'. Unpublished Report, (CSIRO Division of Forest Research: Canberra.)
Gardiner, C. A., and Crawford, D. F. (1988). '1988 seed collections of Eucalyptus globulus subsp. globulus Labill. for tree improvement purposes'. Unpublished Report, (CSIRO Division of Forestry and Forest Products: Canberra.)
Gilmour, A. R., Thompson, R. and Cullis, B. R. (1995). Average information REML, an efficient algorithm for variance parameter estimation in linear mixed models. Biometrics 51, 1440-1450.
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James, S. A., Smith, W. K., Vogelmann, T. C. (1999). Ontogenetic differences in mesophyll structure and chlorophyll distribution in Eucalyptus globulus ssp. globulus. American Journal of Botany 86, 198-207.
Johnson, E. D. (1926). A comparison of the juvenile and adult leaves of Eucalyptus globulus. New Phytologist 26, 202-212.
Jordan, G. J., Borralho, N. M. G., Tilyard, P. G. and Potts, B. M. (1994). Identification of races in Eucalyptus globulus ssp. globulus Labill. based on growth characteristics in Tasmania and geographic distribution. Silvae Genetica 43, 292-298.
Jordan, G. J., Potts, B. M. and Wiltshire, R. J. E. in press. Strong, independent, quantitative genetic control of the timing of vegetative phase change and first flowering in Eucalyptus globulus ssp. globulus Heredity.
Jordan, G. J., Potts, B. M., Kirkpatrick, J. B. and Gardiner, C. (1993). Variation in the Eucalyptus globulus complex revisited. Australian Journal of Botany 41, 763-85.
Li, H., Madden, J. L. and Potts, B. M. (1995). Variation in volatile leaf oils of the Tasmanian Eucalyptus species. 1. Subgenus Monocalyptus. Biochemical Systematics and Ecology 23, 299-318.
Li, H., Madden, J. L. and Potts, B. M. (1996). Variation in volatile leaf oils of the Tasmanian Eucalyptus species. 11. Subgenus Symphyomyrtus. Biochemical Systematics and Ecology 24, 547-569.
Li, H., Madden, J. L. and Potts, B. M. (1997). Variation in leaf waxes of the Tasmanian Eucalyptus species. 1. Subgenus Symphyomyrtus. Biochemical Systematics and Ecology 25, 631-657.
McDonald, A., Borralho, N. M. G. and Potts, B. M. (1997). Genetic variation for growth and wood density in Eucalyptus globulus ssp. globulus in Tasmania. Silvae Genetica (in press).
McKinnney, M. L., and K. J. McNamara (1991). Heterochrony: the Evolution of Ontogeny. (Plenum Press: New York.)
Offler, C. E. (1984). Extant and fossil coniferales of Australia and New Guinea Part 1 : A study of the external morphology of the vegetative shoots of the extant species. Palaeontrographica 193, 18-120.
Pederick, L. A. (1979). Natural variation in Shining Gum (Eucalyptus nitens). Australian Forest Research 9, 41-63.
Potts, B. M. and Jackson, W. D. (1986). Evolutionary processes in the Tasmanian high altitude eucalypts. In 'Flora and Fauna of Alpine Australasia. Ages and Origins'. (Ed. B. A. Barlow.) pp 511-527. (CSIRO: Melbourne.)
Potts, B. M. and Jordan, G. J. (1994). Genetic variation in the juvenile leaf morphology of Eucalyptus globulus Labill. ssp globulus. Forest Genetics. 1: 81-95.
Potts, B. M. and Wiltshire, R. J. E. (1997). Eucalypt genetics and genecology. In 'Eucalypt Ecology: Individuals to Ecosystems'. (Eds J. Williams and J. Woinarski.) pp 56-91. (Cambridge University Press, Cambridge.)
Pryor, L. D. (1976). The Biology of Eucalypts. Edward Arnold, London.
SAS Institute Inc. (1990). 'SAS/STAT User's Guide, Volume 2, Version 6, 4th Edition.' (SAS Institute Inc: Cary, N. C.)
Shaw, R. G. (1991). The comparison of quantitative genetic parameters between populations. Evolution 45, 143-151.
Thomas, D. A. and Barber, H. N. (1974). Studies on leaf characteristics of a cline of Eucalyptus urnigera from Mt. Wellington, Tasmania. II. Reflection, transmission and absorption of radiation. Australian Journal of Botany 22, 701-707.
Wiltshire, R. J. E., Potts, B. M. and Reid, J. B. (1991). A paedomorphocline in Eucalyptus: Natural variation in the E. risdonii/E. tenuiramis complex. Australian Journal of Botany 39, 545-66.
Wiltshire, R. J. E., Potts, B. M. and Reid, J. B. (1992). A paedomorphocline in Eucalyptus: II. Variation in seedling morphology in the E. risdonii/tenuiramis complex. Australian Journal of Botany 40, 789-805.
Wiltshire, R. J. E., Murfet, I. C. and Reid, J. B. (1994). The genetic control of heterochrony: evidence from developmental mutants of Pisum sativum L. Journal of Evolutionary Biology 7, 447-465.
Wiltshire, R. J. E., Potts, B. M. and Reid, J. B. (1998). The genetic control of reproductive and vegetative phase change in the Eucalyptus risdonii/E. tenuiramis complex. Australian Journal of Botany 46, 45-63.
Wiltshire, R. J. E. and Reid, J. B. (1992). The pattern of juvenility within Eucalyptus tenuiramis Miq. saplings. In 'Mass Production Technology for Genetically Improved Fast Growing Forest Tree Species, AFOCEL - IUFRO Symposium 1992, Bordeaux'. pp 37-49. (Association Forêt Cellulose: Nangis, France.)
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<meta content="The adaptive significance of the timing of the abrupt change in leaf form in Eucalyptus globulus Labill. spp. globulus was investigated using quantitative genetic analysis of several field trials containing open-pollinated progenies. Five large trials contained progeny from across the whole geographic range of this taxon. On this broad scale, early phase change appears to promote growth on two sites but not the other three, implying differential selection for the timing of phase change. The timing of vegetative phase change varied markedly between broad geographic regions, consistent with either adaptation to broad scale variation or historical differentiation. Data from one small trial demonstrated a genetic basis to a steep local cline in habit, in the size of plants flowering and in the height of the change in foliage type. In this trial, the progeny from an exposed coastal cliff top had markedly slower growth, earlier vegetative phase change and first flowering than the progeny from 1.5 km inland. This genetically determined combination of slow growth, early phase change and precocious flowering appears to be maintained in exposed coastal environments by current selection, and contrasts with more complex patterns of broad scale geographic variation. The genetic association of the timing of vegetative phase change with growth rate, a fitness surrogate, ranged from positive to negative at different sites. Early phase change may, for example, be favoured in warm, wet environments to reduce damage by leaf fungi, but may also be favoured on exposed dry sites to increase xeromorphy. The patterns of genetic variation in nature may thus result from multiple causes (both biotic and abiotic) and their interpretation will be complex." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Quantitative genetic evidence that the timing of vegetative phase change in Eucalyptus globulus ssp. globulus is an adaptive trait</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Jordan, Gregory J.</span> and <span class="person_name">Potts, Bradley M.</span> and <span class="person_name">Chalmers, Paula</span> and <span class="person_name">Wiltshire, Robert J.E.</span> (2000) <xhtml:em>Quantitative genetic evidence that the timing of vegetative phase change in Eucalyptus globulus ssp. globulus is an adaptive trait.</xhtml:em> Australian Journal of Botany, 48 (5). pp. 561-567.</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_2263' );" href="http://eprints.utas.edu.au/1785/1/pc_growth_paper_preprint.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_2263' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_2263"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/1785/thumbnails/1/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/1785/1/pc_growth_paper_preprint.pdf"><span class="ep_document_citation">PDF (Author Version)</span></a> - Requires a PDF viewer<br />3210Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/BT99038">http://dx.doi.org/10.1071/BT99038</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The adaptive significance of the timing of the abrupt change in leaf form in Eucalyptus globulus Labill. spp. globulus was investigated using quantitative genetic analysis of several field trials containing open-pollinated progenies. Five large trials contained progeny from across the whole geographic range of this taxon. On this broad scale, early phase change appears to promote growth on two sites but not the other three, implying differential selection for the timing of phase change. The timing of vegetative phase change varied markedly between broad geographic regions, consistent with either adaptation to broad scale variation or historical differentiation. Data from one small trial demonstrated a genetic basis to a steep local cline in habit, in the size of plants flowering and in the height of the change in foliage type. In this trial, the progeny from an exposed coastal cliff top had markedly slower growth, earlier vegetative phase change and first flowering than the progeny from 1.5 km inland. This genetically determined combination of slow growth, early phase change and precocious flowering appears to be maintained in exposed coastal environments by current selection, and contrasts with more complex patterns of broad scale geographic variation. The genetic association of the timing of vegetative phase change with growth rate, a fitness surrogate, ranged from positive to negative at different sites. Early phase change may, for example, be favoured in warm, wet environments to reduce damage by leaf fungi, but may also be favoured on exposed dry sites to increase xeromorphy. The patterns of genetic variation in nature may thus result from multiple causes (both biotic and abiotic) and their interpretation will be complex.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available online at http://www.publish.csiro.au/nid/65.htm</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">heterochrony, neotony, phase change</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270799.html">270000 Biological Sciences > 270700 Ecology and Evolution > 270799 Ecology and Evolution not elsewhere classified</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270703.html">270000 Biological Sciences > 270700 Ecology and Evolution > 270703 Terrestrial Ecology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1785</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">dr gregory j jordan</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">03 Sep 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1785;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1785">item control page</a></p>
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