Journal of the Korean Wood Science and Technology

  • 제46권3호
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  • Pages.231-240
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  • 2018
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  • 1017-0715(pISSN)
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  • 2233-7180(eISSN)
한국목재공학회 (The Korean Society of Wood Science & Technology)
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국내산 맹종죽의 죽령별 해부학적 특성

Anatomical Characteristics of Korean Phyllostachys pubescens by Age

  • 전우석 (강원대학교 산림환경과학대학 산림바이오소재공학과) ;
  • 변희섭 (경상대학교 농업생명과학대학 농업생명과학연구원) ;
  • 김남훈 (강원대학교 산림환경과학대학 산림바이오소재공학과)
  • Jeon, Woo-Seok (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Byeon, Hee-Seop (College of Agriculture & Life Science, IALS, Gyeongsang National University) ;
  • Kim, Nam-Hun (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University)
  • 투고 : 2018.02.26
  • 심사 : 2018.05.08
  • 발행 : 2018.05.25
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초록

대나무는 생장이 빠르고, 벌목주기가 짧으며, 목재와 비교하여 가격이 저렴하다는 장점을 가지는 주요 바이오매스 자원 중 하나이다. 따라서, 본 연구에서는 대나무재의 효율적 활용을 위한 기초자료를 수집하기 위하여, 국내산 맹종죽(Phyllostachys pubescens)의 1년생~5년생까지 죽령별로 해부학적 특성을 광학현미경과 주사전자현미경으로 비교 분석하였다. 또한 셀룰로오스의 결정특성을 X선회절법에 의해 분석하였다. 횡단면 관찰 결과, 유관속초의 크기는 1년생이 가장 작았으며, 2년생 이후 유사하였다. 수 부분에서 표피부로 갈수록 유관속의 분포밀도가 높았고, 유관속초의 발달 형태가 뚜렷하게 달랐다. 특히, 1년생 수 부분 유관속 중 세포간극에 인접한 유관속초가 발달 되지 않은 유관속이 드물게 출현하는 것이 관찰되었다. 구성세포 치수 측정 결과, 섬유길이는 1년생이 가장 짧았으며, 모든 년생에서 표피부가 수 부분보다 길었다. 유관속의 방사 및 접선방향 폭은 모든 년생에서 접선방향 폭이 더 컸으며, 2년생부터는 큰 차이를 보이지 않았다. 도관 직경 및 내층 두께는 1년생의 값이 가장 작았으며, 도관 직경은 2년생 이후, 내층 두께는 3년생 이후부터 유사한 값을 보였다. 상대결정화도는 모든 년생에서 표피부로 갈수록 높은 값을 보였으며, 1년생의 값이 가장 낮고, 2~5년생은 비슷한 값을 보였다. 결론적으로, 국내산 맹종죽은 죽령별로 조직구조에 있어 정성적 및 정량적 차이가 있었으며, 2~5년생의 특성은 비슷한 경향이 있었다. 따라서, 1년생은 미성숙한 상태이며, 2년생 이상의 대나무는 성숙한 상태로 조직구조적으로 안정된 특성을 갖는 것으로 사료된다.

Bamboo is one of the major biomass resources that have many advantages such as fast growing, easy cultivation, short rotation, and a relatively lower price. In this study, the anatomical characteristics of Moso bamboo (Phyllostachys pubescens) by age from one-year-old to five-year-old were examined by optical and scanning electron microscopy. Also, the crystalline properties such as relative crystallinity and crystallite width were investigated by an X-ray diffraction method. In one-year-old bamboo xylem, a few vascular bundles showed missing bundle sheath in near the intercellular space. Moreover, one-year-old bamboo had the shortest fiber length and the smallest values in vessel diameter, width of vascular bundle, and thickness of inner layer. One-year-old bamboo also showed the smallest values in the crystallinity and crystallite width. Near epidermis samples had longer fiber length and greater vascular bundle spacing than near pith samples. Relative crystallinity and crystallite width near the epidermis were also higher than near the pith. This study revealed significant differences in qualitative and quantitative anatomical characteristics between one-year-old and two-year- or more old Moso bamboos. It is concluded that the structural differences by bamboo age can be used to differentiate the characteristics of juvenile and mature bamboo.

키워드

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