Asynchronous wood formation in young Acacia mangium planted in Malaysia
In general, tropical trees have less-distinct growth rings. Even if the trees have some concentric structures, there is little information on the timing of their formation. The objective of this report is to show the asynchronous wood formation from the observation of indistinct, ring-like structure...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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2002
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| Online Access: | http://psasir.upm.edu.my/id/eprint/114780/ http://psasir.upm.edu.my/id/eprint/114780/1/114780.pdf |
| _version_ | 1848866593652604928 |
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| author | Ogata, Yoshiyuki Nobuchi, Tadashi Fujita, Minoru Sahri, Mohammed Hamami |
| author_facet | Ogata, Yoshiyuki Nobuchi, Tadashi Fujita, Minoru Sahri, Mohammed Hamami |
| author_sort | Ogata, Yoshiyuki |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In general, tropical trees have less-distinct growth rings. Even if the trees have some concentric structures, there is little information on the timing of their formation. The objective of this report is to show the asynchronous wood formation from the observation of indistinct, ring-like structures. Young Acacia mangium planted in Malaysia was investigated for asynchronous wood formation anatomically and macroscopically. Tree heights and girths at breast height for 28 trees were measured every other week. Wood disks from four trees were sampled at breast height for this research. The radial variation of vessel dimensions and the number of cambial cells in different radial directions and the wood anatomy of discontinuous bands were investigated using thin sectioning and soft radiographic methods. The vessel dimension was quite different in their radial variation even for four radial directions with a similar radius. There was a large variation in the number of cambial cells among radial directions in young Acacia mangium. Bands of low density included a layer of vessels aligned in a spiral rather than in a closed circle. |
| first_indexed | 2025-11-15T14:23:04Z |
| format | Article |
| id | upm-114780 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:23:04Z |
| publishDate | 2002 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1147802025-01-31T02:47:50Z http://psasir.upm.edu.my/id/eprint/114780/ Asynchronous wood formation in young Acacia mangium planted in Malaysia Ogata, Yoshiyuki Nobuchi, Tadashi Fujita, Minoru Sahri, Mohammed Hamami In general, tropical trees have less-distinct growth rings. Even if the trees have some concentric structures, there is little information on the timing of their formation. The objective of this report is to show the asynchronous wood formation from the observation of indistinct, ring-like structures. Young Acacia mangium planted in Malaysia was investigated for asynchronous wood formation anatomically and macroscopically. Tree heights and girths at breast height for 28 trees were measured every other week. Wood disks from four trees were sampled at breast height for this research. The radial variation of vessel dimensions and the number of cambial cells in different radial directions and the wood anatomy of discontinuous bands were investigated using thin sectioning and soft radiographic methods. The vessel dimension was quite different in their radial variation even for four radial directions with a similar radius. There was a large variation in the number of cambial cells among radial directions in young Acacia mangium. Bands of low density included a layer of vessels aligned in a spiral rather than in a closed circle. 2002 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/114780/1/114780.pdf Ogata, Yoshiyuki and Nobuchi, Tadashi and Fujita, Minoru and Sahri, Mohammed Hamami (2002) Asynchronous wood formation in young Acacia mangium planted in Malaysia. Journal of Wood Science, 48 (2). pp. 89-94. ISSN 1435-0211; eISSN: 1435-0211 https://jwoodscience.springeropen.com/articles/10.1007/BF00767283 10.1007/BF00767283 |
| spellingShingle | Ogata, Yoshiyuki Nobuchi, Tadashi Fujita, Minoru Sahri, Mohammed Hamami Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title | Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title_full | Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title_fullStr | Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title_full_unstemmed | Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title_short | Asynchronous wood formation in young Acacia mangium planted in Malaysia |
| title_sort | asynchronous wood formation in young acacia mangium planted in malaysia |
| url | http://psasir.upm.edu.my/id/eprint/114780/ http://psasir.upm.edu.my/id/eprint/114780/ http://psasir.upm.edu.my/id/eprint/114780/ http://psasir.upm.edu.my/id/eprint/114780/1/114780.pdf |