Production of cuttings in response to stock plant temperature in the subtropical eucalypts, Corymbia citriodora and Eucalyptus dunnii

Stephen J Trueman; Tracey V McMahon; M Bristow

doi:10.1007/s11056-012-9315-y

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Production of cuttings in response to stock plant temperature in the subtropical eucalypts, Corymbia citriodora and Eucalyptus dunnii

Journal article

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Production of cuttings in response to stock plant temperature in the subtropical eucalypts, Corymbia citriodora and Eucalyptus dunnii

Stephen J Trueman, Tracey V McMahon and M Bristow

New Forests, Vol.44(2), pp.265-279

2013

DOI: https://doi.org/10.1007/s11056-012-9315-y

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Abstract

adventitious roots

auxin

boron

calcium

Myrtaceae

propagation

Propagation of subtropical eucalypts is often limited by low production of rooted cuttings in winter. This study tested whether changing the temperature of Corymbia citriodora and Eucalyptus dunnii stock plants from 28/23°C (day/night) to 18/13°C, 23/18°C or 33/28°C affected the production of cuttings by stock plants, the concentrations of Ca and other nutrients in cuttings, and the subsequent percentages of cuttings that formed roots. Optimal temperatures for shoot production were 33/28°C and 28/23°C, with lower temperatures reducing the number of harvested cuttings. Stock plant temperature regulated production of rooted cuttings, firstly by controlling shoot production and, secondly, by affecting the ensuing rooting percentage. Shoot production was the primary factor regulating rooted cutting production by C. citriodora, but both shoot production and root production were key determinants of rooted cutting production in E. dunnii. Effects of lower stock plant temperatures on rooting were not the result of reduced Ca concentration, but consistent relationships were found between adventitious root formation and B concentration. Average rooting percentages were low (1–15% for C. citriodora and 2–22% for E. dunnii) but rooted cutting production per stock plant (e.g. 25 for C. citriodora and 52 for E. dunnii over 14 weeks at 33/28°C) was sufficient to establish clonal field tests for plantation forestry.

Details

Title: Production of cuttings in response to stock plant temperature in the subtropical eucalypts, Corymbia citriodora and Eucalyptus dunnii
Authors: Stephen J Trueman (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Tracey V McMahon (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
M Bristow (Author) - Charles Darwin University
Publication details: New Forests, Vol.44(2), pp.265-279
Publisher: Springer Netherlands
Date published: 2013
DOI: 10.1007/s11056-012-9315-y
ISSN: 0169-4286
Copyright note: Copyright © 2013 Springer Netherlands. The Author's accepted version is reproduced here in accordance with the publisher's copyright policy. The original publication is available at www.springerlink.com
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99449641602621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Forestry

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