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Stem anatomy and adventitious root formation in cuttings of Angophora, Corymbia and Eucalyptus

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Bryant, P. H. and Trueman, S. J. (2015) Stem anatomy and adventitious root formation in cuttings of Angophora, Corymbia and Eucalyptus. Forests, 6 (4). pp. 1227-1238. ISSN 19994907 (ISSN)

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Article Link: http://dx.doi.org/10.3390/f6041227


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. © 2015 by the authors; licensee MDPI, Basel, Switzerland.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:Export Date: 29 November 2015 Correspondence Address: Trueman, S.J.; Genecology Research Centre, University of the Sunshine CoastAustralia
Keywords:Auxin Clonal forestry Eucalypts Morphology Nursery Propagation Rooting Tissue culture Forestry Growth kinetics Plants (botany) Wave propagation Tissue anatomy angiosperm clonal organism growth rate nursery ground root system stem Auxins Clones Eucalyptus Nurseries Angophora
Subjects:Science > Botany
Science > Botany > Plant anatomy
Forestry > Research. Experimentation
Live Archive:09 Feb 2016 01:35
Last Modified:03 Sep 2021 16:50

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