CAJ | 학술논문

【目的】为樟科木材识别与系统分类研究提供依据。【方法】利用光学显微镜及扫描电子显微镜对木材结构进行观察。【结果和结论】观察结果表明17种樟科木材结构具有以下特征：散孔材，管孔组合主要为单管孔和短径列复管孔（2～3细胞），偶见管孔团。导管分子仅具单穿孔或兼有单穿孔和梯状穿孔，梯状穿孔横隔数3～14个；管间纹孔式互列。木射线由单列射线和多列射线构成，单列射线稀少，多列射线宽多为2～3细胞。射线类型主要为异形Ⅱ型和异形Ⅲ型，少数异形I型。导管射线间纹孔式多为大圆形及圆肾形。轴向薄壁组织主要为环管束状、轮界状。射线细胞和轴向薄壁细胞中普遍存在油细胞或黏液细胞。根据观察结果，依据17种木材结构编制木材分类检索表。对导管分子穿孔板的研究表明，樟科木材属间和种间的进化程度不一致，琼楠属Beilschmiedia和厚壳桂属Cryp-tocarya木材在一定程度上是较为进化的属种。
【목적】위장과목재식별여계통분류연구제공의거。【방법】이용광학현미경급소묘전자현미경대목재결구진행관찰。【결과화결론】관찰결과표명17충장과목재결구구유이하특정：산공재，관공조합주요위단관공화단경렬복관공（2～3세포），우견관공단。도관분자부구단천공혹겸유단천공화제상천공，제상천공횡격수3～14개；관간문공식호렬。목사선유단렬사선화다렬사선구성，단렬사선희소，다렬사선관다위2～3세포。사선류형주요위이형Ⅱ형화이형Ⅲ형，소수이형I형。도관사선간문공식다위대원형급원신형。축향박벽조직주요위배관속상、륜계상。사선세포화축향박벽세포중보편존재유세포혹점액세포。근거관찰결과，의거17충목재결구편제목재분류검색표。대도관분자천공판적연구표명，장과목재속간화충간적진화정도불일치，경남속Beilschmiedia화후각계속Cryp-tocarya목재재일정정도상시교위진화적속충。
Objective The wood structures of 17 species belonging to Lauraceae from southwest of Yun-nan were studied in order to provide a basis for wood identification , systematics, and taxonomy .[Meth-od] Wood samples were observed with the help of light microscope and scanning electron microscope .[Result and conclusion] The results showed that the wood this studied had the following characteristics :The wood had diffuse porous with solitary pores and short radial multiple pores ( 2-3 cells ) , and few pore clusters for all the species .The vessels had two kinds of perforation plates: Only simple and both with simple and scalariform perforation and the number of scalariform perforation plate bars were from 3 to 14 .The intervessel pitting was alternate .Wood rays were made up of few uniseriate and many multiseri-ate rays, and multiseriate rays often had 2-3 cells in the widest place .Most ray types were heteromor-phosis Ⅱ and heteromorphosis Ⅲ, but few heteromorphosis Ⅰ existed as well .The types of vessel-ray pitting were almost large circular and reniform shape .Axial parenchyma was almost vasicentric and termi-nal parenchyma .Oil cells or mucous cells were widespread in ray and axial parenchyma cells .Wood classification table is made based on the observations in order to provide the basis for wood identification . The study of vessel perforation plates show that degree of evolution of wood belonging to Lauraceae is in -consistent , and Beilschmiedia and Cryptocarya are relatively evolutionary genera to some extent .