Occurrences of mild compression wood in agathis borneensis and dacrydium elatum
Studies on the compression wood in tropical gymnosperms are uncommon due to their limited distribution and over-exploitation. Microscopic examination of the heartwood of two tropical gymnosperms, Agathis borneensis (local name: bindang, damar minyak) and Dacrydium elatum (local name: sempilor) gr...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Koninklijke Brill NV, Leiden
2015
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| Online Access: | http://ir.unimas.my/id/eprint/16038/ http://ir.unimas.my/id/eprint/16038/1/OCCURRENCES%20OF%20MILD%20COMPRESSION%20WOOD%20%28abstract%29.pdf |
| _version_ | 1848837973113569280 |
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| author | Yoon, Soo Kim Kwang, Ho Lee Wong, Andrew H.H |
| author_facet | Yoon, Soo Kim Kwang, Ho Lee Wong, Andrew H.H |
| author_sort | Yoon, Soo Kim |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Studies on the compression wood in tropical gymnosperms are uncommon due
to their limited distribution and over-exploitation. Microscopic examination of
the heartwood of two tropical gymnosperms, Agathis borneensis (local name:
bindang, damar minyak) and Dacrydium elatum (local name: sempilor) growing
on higher elevations in Sarawak, Malaysia showed the occurrence of mild
compression wood. Intercellular spaces were present in the compression wood
of A. borneensis, but not in D. elatum. Rounded shapes of tracheids, typical of
severe compression wood, were not observed in any of the samples examined.
In D. elatum helical cavities were present, which corresponded in location to
cell wall checks seen in cross-sectional views. The S1 layer was relatively thick
in both wood species but a distinct S3 layer was observable only in the mild
compression wood of D. elatum. Although the main feature of the mild compression
wood tracheids of both wood species was greater lignification of the
outer S2 region, autofluorescence and KMnO4 staining showed the fluorescence
and staining intensity in the corner middle lamella in some cases to be much
stronger than that in the outer part of S2 layer. |
| first_indexed | 2025-11-15T06:48:10Z |
| format | Article |
| id | unimas-16038 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:48:10Z |
| publishDate | 2015 |
| publisher | Koninklijke Brill NV, Leiden |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-160382017-04-28T07:40:14Z http://ir.unimas.my/id/eprint/16038/ Occurrences of mild compression wood in agathis borneensis and dacrydium elatum Yoon, Soo Kim Kwang, Ho Lee Wong, Andrew H.H GE Environmental Sciences Studies on the compression wood in tropical gymnosperms are uncommon due to their limited distribution and over-exploitation. Microscopic examination of the heartwood of two tropical gymnosperms, Agathis borneensis (local name: bindang, damar minyak) and Dacrydium elatum (local name: sempilor) growing on higher elevations in Sarawak, Malaysia showed the occurrence of mild compression wood. Intercellular spaces were present in the compression wood of A. borneensis, but not in D. elatum. Rounded shapes of tracheids, typical of severe compression wood, were not observed in any of the samples examined. In D. elatum helical cavities were present, which corresponded in location to cell wall checks seen in cross-sectional views. The S1 layer was relatively thick in both wood species but a distinct S3 layer was observable only in the mild compression wood of D. elatum. Although the main feature of the mild compression wood tracheids of both wood species was greater lignification of the outer S2 region, autofluorescence and KMnO4 staining showed the fluorescence and staining intensity in the corner middle lamella in some cases to be much stronger than that in the outer part of S2 layer. Koninklijke Brill NV, Leiden 2015 Article PeerReviewed text en http://ir.unimas.my/id/eprint/16038/1/OCCURRENCES%20OF%20MILD%20COMPRESSION%20WOOD%20%28abstract%29.pdf Yoon, Soo Kim and Kwang, Ho Lee and Wong, Andrew H.H (2015) Occurrences of mild compression wood in agathis borneensis and dacrydium elatum. IAWA Journal, 36 (4). pp. 378-386. ISSN 2294-1932 https://www.researchgate.net/publication/287405357_Occurrences_of_mild_compression_wood_in_agathis_borneensis_and_dacrydium_elatum 10.1163/22941932-20150108 |
| spellingShingle | GE Environmental Sciences Yoon, Soo Kim Kwang, Ho Lee Wong, Andrew H.H Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title | Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title_full | Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title_fullStr | Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title_full_unstemmed | Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title_short | Occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| title_sort | occurrences of mild compression wood in agathis borneensis and dacrydium elatum |
| topic | GE Environmental Sciences |
| url | http://ir.unimas.my/id/eprint/16038/ http://ir.unimas.my/id/eprint/16038/ http://ir.unimas.my/id/eprint/16038/ http://ir.unimas.my/id/eprint/16038/1/OCCURRENCES%20OF%20MILD%20COMPRESSION%20WOOD%20%28abstract%29.pdf |