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This paper deals with the changes in characteristics of mutant fast grown teak wood developed by Indonesians Institute of Science (LIPI) at different ages and growing sites. Wood samples were taken from various ages at three different growing sites in Cibinong Science Center Area, Bogor. Anatomical observations of the wood samples followed the International Association of Wood Anatomists (IAWA) Committee. Fiber maceration were prepared by using modified Franklin method. Chemical components analyses were carried out using the Mokushitsu Kagaku Jikken Manual standard. Physical and mechanical property measurements were tested according to British Standard (BS) 373-1957. The results showed that anatomical characteristics of the 5 years-old (at Site 2) mutants teak wood were not different from community forests and conventional teak woods at the same ages. The fiber length increased from pith to the bark. Alcohol-benzene soluble extractive substances tended to increase, the lignin content did not vary, holocellulose content decreased, and the α-cellulose content were almost similar with increasing age of the wood. MOR and MOE of the 5 years-old (Site 2) wood were almost the same as 20–30 years-old conventional teak wood. However, MORs of 8–10 years-old (Site 3) wood were slightly lower than that of the 5 years-old (Site 2). Surprisingly, the MOR for 9 years-old wood which grown in Site 2 was even higher than that of 60–80 years-old conventional teak wood. Density, MOR, and MOE values depended on growing site, age of the trees, and parts of stem, however all of the 5, 8, 9, and 10 years-old wood which grown in Site 2 and 3 can be classified into Strength Class II according to Indonesian Forestry Vademecum. In addition, the compressive strength parallel to the grain values of 9 years-old teak wood which grown in Site 2 can be classified into Strength Class I. From these studies, it can be concluded that the mutant teak wood has very good prospects to be developed and cultivated as an alternative raw material for wood in the future and quite suitable material for timber frame structures of wooden construction with medium strength property.

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Changes in the Characteristics of LIPI Fast-Grown Teak Wood at Different Ages and Growing Sites

  • 会议论文

  • 发表日期：

    2025年

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  • Wahyu Dwianto,
  • Danang S. Adi,
  • Dwi A. Pramasari,
  • Eka Lestari,
  • Adik Bahanawan,
  • Teguh Darmawan,
  • Dimas Triwibowo,
  • Yusup Amin,
  • Prabu S. Sejati,
  • Imran A. Sofianto,
  • Sudarmanto,
  • Mohamad Gopar,
  • Fazhar Akbar,
  • Betalini W. Hapsari,
  • Witjaksono,
  • Ratih Damayanti,
  • Ganis Lukmandaru,
  • Akihisa Kitamori,
  • Takuro Mori,
  • Junji Sugiyama

摘要

This paper deals with the changes in characteristics of mutant fast grown teak wood developed by Indonesians Institute of Science (LIPI) at different ages and growing sites. Wood samples were taken from various ages at three different growing sites in Cibinong Science Center Area, Bogor. Anatomical observations of the wood samples followed the International Association of Wood Anatomists (IAWA) Committee. Fiber maceration were prepared by using modified Franklin method. Chemical components analyses were carried out using the Mokushitsu Kagaku Jikken Manual standard. Physical and mechanical property measurements were tested according to British Standard (BS) 373-1957. The results showed that anatomical characteristics of the 5 years-old (at Site 2) mutants teak wood were not different from community forests and conventional teak woods at the same ages. The fiber length increased from pith to the bark. Alcohol-benzene soluble extractive substances tended to increase, the lignin content did not vary, holocellulose content decreased, and the α-cellulose content were almost similar with increasing age of the wood. MOR and MOE of the 5 years-old (Site 2) wood were almost the same as 20–30 years-old conventional teak wood. However, MORs of 8–10 years-old (Site 3) wood were slightly lower than that of the 5 years-old (Site 2). Surprisingly, the MOR for 9 years-old wood which grown in Site 2 was even higher than that of 60–80 years-old conventional teak wood. Density, MOR, and MOE values depended on growing site, age of the trees, and parts of stem, however all of the 5, 8, 9, and 10 years-old wood which grown in Site 2 and 3 can be classified into Strength Class II according to Indonesian Forestry Vademecum. In addition, the compressive strength parallel to the grain values of 9 years-old teak wood which grown in Site 2 can be classified into Strength Class I. From these studies, it can be concluded that the mutant teak wood has very good prospects to be developed and cultivated as an alternative raw material for wood in the future and quite suitable material for timber frame structures of wooden construction with medium strength property.