Subtropical eucalypt plantations in eastern Australia

Nichols, J. Doland; Smith, Ben; Grant, John C.; Glencross, Kevin S

doi:10.1080/00049158.2010.10676310

Cited by 46 publications

(27 citation statements)

References 26 publications

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“…Over 104,000 ha of hardwood plantations are established in subtropical eastern Australia (GAVRAN and PARSONS, 2008). Approximately 21% of this is spotted gum (NICHOLS et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Growth, Form and Quambalaria Shoot Blight Tolerance of Spotted Gum in North-eastern New South Wales, Australia

2009

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A young provenance/progeny trial of spotted gums, which are major hardwood plantation species in subtropical eastern Australia, was studied for growth, form, and damage from Quambalaria shoot blight. The trial contained a wide range of genotypes, mainly of Corymbia citriodora subsp. variegata, with between one and 21 families per provenance. Genetic parameters were calculated from 23 provenances with four or more families. Provenances superior for growth included four well-represented C. citriodora subsp. variegata provenances, all from south-east Queensland, which also had a high proportion of superior families. Overall, Queensland provenances had significantly higher mean diameter and height than those from New South Wales (NSW), although there were several superior NSW families. Provenances superior for growth also displayed good straightness and relatively fine branching. Relatively low Quambalaria shoot blight damage was recorded for four Queensland provenances and one coastal NSW provenance, which all had high proportions of families with low damage. Provenances that were putative intergrades between C. citriodora subsp. variegata and C. maculata tended to have high damage levels. However, some mediocre provenances contained superior families potentially useful for breeding. Regressions of Quambalaria damage index (QDI) on latitude, and mean height growth on QDI, were highly significant and moderately strong (0.51 and 0.58, respectively), indicating increasing damage in more southern material, and a retarding effect (although not striking) of damage on growth. Individual heritability estimates were low (zero to 0.14) for growth and form, and moderate for QDI (0.31). The genetic correlations for QDI with growth traits were strong and negative (-0.77 and -0.88), supporting a strategy of selecting vigorous trees for breeding programs from provenances and families superior for these traits.

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“…Over 104,000 ha of hardwood plantations are established in subtropical eastern Australia (GAVRAN and PARSONS, 2008). Approximately 21% of this is spotted gum (NICHOLS et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Growth, Form and Quambalaria Shoot Blight Tolerance of Spotted Gum in North-eastern New South Wales, Australia

2009

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“…The eucalypts, Angophora, Corymbia, and Eucalyptus, are the world's most widely planted hardwood trees because of their diversity of species, adaptability to marginal production environments, and wide variety of commercial uses [1,2]. Productivity of eucalypt plantations has been limited by the low amenability of many species to vegetative propagation.…”

Section: Introductionmentioning

confidence: 99%

Stem Anatomy and Adventitious Root Formation in Cuttings of Angophora, Corymbia and Eucalyptus

Bryant

Trueman

2015

Forests

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Abstract:Many plantation eucalypts are difficult to propagate from cuttings, and their rooted cuttings often possess very few adventitious roots. We microscopically examined the stem anatomy of cuttings from 12 species of eucalypts and we determined whether adventitious root formation in auxin-treated cuttings of four species was limited to particular positions around the vascular tissue. Most species contained a central pith that was arranged in a four-pointed stellate pattern. The surrounding vascular tissue was also arranged in a stellate pattern near the shoot apex but it developed a more rectangular shape at the outer phloem as the stems enlarged radially. Adventitious roots formed at, or slightly peripheral to, the vascular cambium, and they formed at both the corners and the sides of the rectangular-shaped vascular tissue. The study highlighted that auxin-treated eucalypt cuttings can produce roots at multiple positions around the vascular tissue and so propagation methods can aim to produce more than four adventitious roots per rooted cutting. Higher numbers of adventitious roots could improve the root system symmetry, stability, survival and growth rate of clonal eucalypt trees.

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“…Thus oral presentation and writing skills are emphasised within SCU's degrees, and students are encouraged to publish research arising from honours (e.g., Pelletier et al 2008), graduate diploma (e.g., Thinley et al 2005) and doctoral programs (Angel et al 2008, Bristow et al 2006, Grant et al 2010, Kariuki et al 2006a,b, Leys and Vanclay 2011a.…”

Section: Teaching Forestry At Scumentioning

confidence: 99%

Forestry at Southern Cross University: fifteen years in review

et al. 2011

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SUMMARYAfter 15 years, it is timely to review the 4-year bachelor degree in forestry offered by Southern Cross University (SCU), now the only remaining such 4-year degree in Australia. The SCU program is characterised by innovative teaching, a strong fieldwork component, emphasis on research, and strong links with local interest groups (both environmental and industrial). The progressive introduction of two-site delivery and on-line lectures has maintained the viability of the course despite modest student demand.

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Subtropical eucalypt plantations in eastern Australia

Cited by 46 publications

References 26 publications

Growth, Form and Quambalaria Shoot Blight Tolerance of Spotted Gum in North-eastern New South Wales, Australia

Growth, Form and Quambalaria Shoot Blight Tolerance of Spotted Gum in North-eastern New South Wales, Australia

Stem Anatomy and Adventitious Root Formation in Cuttings of Angophora, Corymbia and Eucalyptus

Forestry at Southern Cross University: fifteen years in review

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