Journal article
Verification of Tolerance to Infection by Ceratocystis Manginecans in Clones of Acacia Mangium
Journal of Tropical Forest Science, Vol.35(Special Issue), pp.42-50
2023
Abstract
Ceratocystis canker and wilt disease has had a devastating impact on plantations of Acacia mangium in Sabah, Malaysia effectively resulting in its discontinuation in the region. The immediate future of industrial tree plantations in Malaysia relies on alternative species, such as Eucalyptus pellita, which are suited to the environment and market opportunities. However, identifying A. mangium planting stock with high levels of tolerance to Ceratocystis manginecans provides substantial opportunities for its large scale planting and sustainability in the future. The aim of this study was to verify tolerance to C. manginecans in over 100 putatively tolerant A. mangium clones selected from a family screening trial consisting of 100 wild families. Selections from the family screening trial were based on either short-lesion length measured six weeks after inoculation or survival 12 months post inoculation. Six clonal trials were established under field conditions over two years with more than five ramets of most clones tested in at least two separate trials. The trees were inoculated with C. manginecans 12 months after trial establishment, and assessments of crown health and survival as well as the presence or absence of sunken bark, gummosis or stem borer infestation were carried out 12 months post inoculation. Narrow-sense heritability estimates were moderate for external variables and for crown health (0.14–0.24) and survival (0.14–0.22). Genetic correlation estimates between trials were generally high, indicating that assessments were repeatable across trials. Correlations between traits used to assess damage following inoculation indicated that different traits may be used to identify clones that tolerate infection. The accuracy of the screening showed that resistant clones can be identified and used to produce A. mangium tolerant to infection by C. manginecans.
Details
- Title
- Verification of Tolerance to Infection by Ceratocystis Manginecans in Clones of Acacia Mangium
- Authors
- Mahadir Lapammu (Author) - Sabah Softwoods Bhd.Paul M Warburton (Author) - Forest Solutions MalaysiaYani Japarudin (Author) - Forest Solutions MalaysiaDavid Boden (Author) - Forest Solutions MalaysiaMichael J Wingfield (Author) - University of PretoriaJeremy Brawner (Author) - University of the Sunshine Coast, Queensland, Forest Industries Research Centre
- Publication details
- Journal of Tropical Forest Science, Vol.35(Special Issue), pp.42-50
- Publisher
- Forest Research Institute Malaysia, Institut Penyelidikan Perhutanan Malaysia
- DOI
- 10.26525/jtfs2023.35S.SI.42
- ISSN
- 2521-9847
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Business and Creative Industries; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99735297002621
- Output Type
- Journal article
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