1. bookVolume 56 (2007): Issue 1-6 (December 2007)
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eISSN
2509-8934
First Published
22 Feb 2016
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English
access type Open Access

Gene Flow Between Introduced and Native Eucalyptus Species: Morphological Analysis of Tri-Species and Backcross Hybrids Involving E. nitens

Published Online: 14 Oct 2017
Volume & Issue: Volume 56 (2007) - Issue 1-6 (December 2007)
Page range: 127 - 133
Received: 10 Mar 2006
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
Summary

Morphometric analyses were conducted on second-generation tri-species and backcross hybrids in Eucalyptus. These hybrids were all produced using pollen from two E. nitens x cordata F1 hybrids and controlled pollination techniques. Tri-species hybrids were created with E. gunnii, E. ovata and E. viminalis as females, while backcrosses were produced with E. cordata. Multivariate analysis of seedling characteristics indicated that eighty percent of the backcross hybrids fell within the morphological range of E. cordata. All three cross combinations of the tri-species hybrids were biased away from E. nitens and towards their maternal parent and E. cordata. The inclusion of data for first-generation (F1) hybrids between the pure parental species in the current work showed the F1’s to be easily distinguishable from pure species, compared to second-generation hybrids. The use of morphology for detecting second-generation hybridisation involving exotic plantation species and native eucalypt populations will therefore be unreliable, and identifies a need for preventing second-generation hybrids from establish in the wild. The current work, nevertheless, provides further demonstration of the effectiveness of morphological identification of F1 hybrids. The easy recognition of F1 hybrids will be useful in identifying sites and species at risk of exotic gene flow and enable the development of weeding programs that focus on removing exotic hybrids in the wild.

Keywords

ARNOLD, M. L. (1997): Natural Hybridization and Evolution. Oxford University Press, Oxford.Search in Google Scholar

ARNOLD, M. L., M. R. Bulger, J. M. BURKE, A. L. HEMPEL and J. H. WILLIAMS (1999): Natural hybridization: How low can you go and still be important? Ecology 80, 371-381.10.1890/0012-9658(1999)080[0371:NHHLCY]2.0.CO;2Open DOISearch in Google Scholar

ARNOLD, M. L. and S. A. HODGES (1995): Are natural hybrids fit or unfit relative to their parents? Trends Ecol. Evol. 10, 67-71.Search in Google Scholar

BARBOUR, E. L. (2004a): Eucalypt Hybrids in South-Western Western Australia. no. CAL-5A, Rural Industries and Development Corporation.Search in Google Scholar

BARBOUR, R. C. (2004b): Gene Flow from Introduced Eucalyptus Plantations into Native Eucalypt Species. Unpublished PhD Thesis, University of Tasmania.Search in Google Scholar

BARBOUR, R. C., B. M. POTTS and R. E. VAILLANCOURT (2003): Gene flow between introduced and native Eucalyptus species: exotic hybrids are establishing in the wild. Aust. J. Bot. 51, 429-439.Search in Google Scholar

BARBOUR, R. C., B. M. POTTS and R. E. VAILLANCOURT (2005): Gene flow between introduced and native Eucalyptus species: crossability of native Tasmanian species with exotic E. nitens. Aust. J. Bot. 53, 465-477.Search in Google Scholar

BARBOUR, R. C., B. M. POTTS and R. E. VAILLANCOURT (2006): Gene flow between introduced and native Eucalyptus species: flowering asynchrony as a barrier to gene flow from exotic E. nitens plantations. For. Ecol. Manage. 226, 9-21.Search in Google Scholar

CAUVIN, B., B. M. POTTS and W. C. POTTS (1987): Eucalyptus: Hybridation artificielle - barrières et hérédité des caracteres. In: ‘Annales de Recherches Sylvicoles’. pp. 255-303. Association Forêt-Cellulose, Paris.Search in Google Scholar

CHAPARRO, J., Y. LI, M. SHEPHERD, H. RUSSELL, M. GIBBINGS and R. TEASDALE (1996): Detection of vigor loci in eucalypt hybrids. In: Plant Genome IV, San Diego, California. 14-18th of January.Search in Google Scholar

DALE, G. T. (2002): Salt tolerant eucalypts for commercial forestry: Progress and promise. In: Private Forestry - Sustainable, Accountable and Profitable. Proceedings of the Australian Forest Growers 2002 National Conference, Albany, Western Australia. 13-16 October, 2002.Search in Google Scholar

DE ASSIS, T. F. (2000): Production and use of Eucalyptus hybrids for industrial purposes. pp. 63-74. In: Hybrid Breeding and Genetics of Forest Trees. Proceedings of QFRI/CRC-SPF Symposium, Noosa, Australia. 9-14th April, 2000.Search in Google Scholar

DELAPORTE, K. L., J. G. CONRAN and M. SEDGLEY (2001): Interspecific hybridization within Eucalyptus (Myrtaceae): Subgenus Symphyomyrtus, sections Bisectae and Adnataria. Int. J. Plant Sci. 162, 1317-1326.10.1086/323276Search in Google Scholar

GRIFFIN, A. R., I. P. BURGESS and L. WOLF (1988): Patterns of natural and manipulated hybridisation in the genus Eucalyptus L’Herit. - a review. Aust. J. Bot. 36, 41-66.Search in Google Scholar

GRIFFIN, A. R., J. L. HARBARD, C. CENTURION and P. SANTINI (2000): Breeding Eucalyptus grandis x globulus and other inter-specific hybrids with high inviability - problem analysis and experience with Shell Forestry projects in Uruguay and Chile. In: ‘Hybrid Breeding and Genetics of Forest Trees. Proceedings of QFRI/CRC-SPF Symposium, 9-14th April 2000 Noosa, Queensland, Australia’. (Ed. H. S. DUNGEY, M. J. DIETERS and D. G. NIKLES) pp. 1-13. Department of Primary Industries, Brisbane.Search in Google Scholar

MCCOMB, J. A., R. L. A. ODDIE, S. R. CHAPMAN, M. C. CALVER, G. F. Rasmussen, T. L. HINGSTON and D. W. DE LITTLE (2000): Salt tolerant hybrid eucalypts for wood fibre production. pp. 252-258. In: Hybrid Breeding and Genetics of Forest Trees, Noosa, Queensland, Australia. 9-14th Apr. 2000.Search in Google Scholar

MCKINNON, G. E., G. J. JORDAN, R. E. VAILLANCOURT, D. A. STEANE and B. M. POTTS (2004a): Glacial refugia and reticulate evolution: the case of the Tasmanian eucalypts. Philos. Trans. R. Soc. Lond. B. Biol. Sci. 359, 275-284.10.1098/rstb.2003.1391Search in Google Scholar

MYBURG, A. A., A. R. GRIFFIN, R. R. SEDEROFF and R. W. WHETTEN (2003): Comparative genetic linkage maps of Eucalyptus grandis, Eucalyptus globulus and their F1 hybrid based on a double pseudo-backcross mapping approach. Theor. Appl. Genet. 107, 1028-1042.10.1007/s00122-003-1347-4Search in Google Scholar

MYBURG, A. A., C. VOGL, A. R. GRIFFIN, R. R. SEDEROFF and R. W. WHETTEN (2004): Genetics of postzygotic isolation in Eucalyptus: Whole-genome analysis of barriers to introgression in a wide interspecific cross of Eucalyptus grandis and E. globulus. Genetics 166, 1405-1418.10.1534/genetics.166.3.1405Search in Google Scholar

PATON, D. M. (1981): Eucalyptus Physiology .3. Frost- Resistance. Aust. J. Bot. 29, 675-688.Search in Google Scholar

PEDERICK, L. A. (1979): Natural variation in Shining Gum (Eucalyptus nitens). Aust. For. Res. 9, 41-63.Search in Google Scholar

PILIPENKA, F. S. (1969): Hybridisation of eucalypts in the USSR. Trudy 6th series. Introduktsiya Rastenii Zelende Stroitel’stvd. (Translated by P. AUCKLAND. CSIRO: Melbourne). Botanicheski Institut, Akademiya Nauk SSSR.Search in Google Scholar

POTTS, B. M. (1986): The population dynamics and regeneration of a hybrid zone between Eucalyptus risdonii and E. amygdalina. Aust. J. Bot. 34, 305-329.Search in Google Scholar

POTTS, B. M. (1989): Population variation and conservation status of a rare Tasmanian endemic, Eucalyptus cordata. Research Report No. 4, Tasmanian Forest Research Council Inc.Search in Google Scholar

POTTS, B. M., R. C. BARBOUR, A. B. HINGSTON and R. E. VAILLANCOURT (2003): Turner Review: the risks of genetic pollution of native eucalypt gene pools. Aust. J. Bot. 51, 1-25.Search in Google Scholar

POTTS, B. M. and H. D. DUNGEY (2004): Hybridisation of Eucalyptus: key issues for breeders and geneticists. New For. 27, 115-138.10.1023/A:1025021324564Search in Google Scholar

POTTS, B. M. and J. B. MARSDEN-SMEDLEY (1989): In vitro germination of Eucalyptus pollen: response to variation in boric acid and sucrose. Aust. J. Bot. 37, 429-441.Search in Google Scholar

POTTS, B. M. and J. B. REID (1988): Hybridisation as a dispersal mechanism. Evolution 42, 1245-1255.10.1111/j.1558-5646.1988.tb04184.xOpen DOISearch in Google Scholar

POTTS, B. M., P. W. VOLKER, P. A. TILYARD and K. JOYCE (2000): The genetics of hybridisation in the temperate Eucalyptus. pp. 200-211. In: Hybrid Breeding and Genetics of Forest Trees. Proceedings of QFRI/CRC-SPF Symposium, Noosa, Australia. 9-14th April 2000.Search in Google Scholar

TIBBITS, W. N. (1988): Germination and morphology of progeny from controlled pollinations of Eucalyptus nitens (Deane and Maiden) Maiden. Aust. J. Bot. 36, 677-691.Search in Google Scholar

TIBBITS, W. N. (1989): Controlled pollination studies with shining gum (Eucalyptus nitens (Deane and Maiden) Maiden). Forestry 62, 111-126.10.1093/forestry/62.2.111Search in Google Scholar

WILLIAMS, K. and B. M. POTTS (1996): The natural distribution of Eucalyptus species in Tasmania. Tasforests 8, 39-165.Search in Google Scholar

WILTSHIRE, R. J. E. and J. B. REID (1987): Genetic variation in the Spinning Gum, Eucalyptus perriniana F. Muell. ex Rodway. Aust. J. Bot. 35, 33-47.Search in Google Scholar

WOOD, M. S., N. C. STEPHENS, B. K. ALLISON and C. I. HOWELL (2001): Plantations of Australia - a Report From the National Plantation Inventory and the National Farm Forest Inventory. Bureau of Rural Sciences.Search in Google Scholar

YORKE, S. and D. H. ASHTON (1982): A possible tri-hybrid eucalypt near the Cathedral Range, Victoria. Victorian Naturalist 99, 209-213.Search in Google Scholar

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