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Position: Home > Articles > Structure of Bordered Pit Membrane of Cunninghamia lanceolata Tracheid Scientia Silvae Sinicae 2007,43 (8) 151-153+159

杉木管胞具缘纹孔膜超微构造

作  者：
佟永萍;赵广杰
单  位：
北京林业大学材料科学与技术学院
关键词：
杉木;管胞;具缘纹孔膜;塞缘;纹孔塞;微纤丝
摘  要：
The structure of the bordered pit membrane on the fir tracheid was studied through the observation using scanning electron microscope.As a result,torus of the bordered pit on the fir tracheid can be seen clearly,and the change of the thickness from torus to margo is not obvious.The microfibrils of the margo mainly distribute radiately,part of them exist tangently and slantingly.Only bordered pit membrane in sapwood of the fresh wood cover nothing,while the others cover with amorphous materials.Same as the torus of the heartwood in fresh wood,the torus of sapwood in air-dried wood and springwood in heartwood are all sunken with much warty layer on the pit border.
译  名：
Structure of Bordered Pit Membrane of Cunninghamia lanceolata Tracheid
作  者：
Tong Yongping Zhao Guangjie(College of Material Science and Technology,Beijing Forestry University Beijing 100083)
关键词：
Cunninghamia lanceolata;tracheid;bordered pit membrane;margo;torus;microfibril
摘  要：
The structure of the bordered pit membrane on the fir tracheid was studied through the observation using scanning electron microscope.As a result,torus of the bordered pit on the fir tracheid can be seen clearly,and the change of the thickness from torus to margo is not obvious.The microfibrils of the margo mainly distribute radiately,part of them exist tangently and slantingly.Only bordered pit membrane in sapwood of the fresh wood cover nothing,while the others cover with amorphous materials.Same as the torus of the heartwood in fresh wood,the torus of sapwood in air-dried wood and springwood in heartwood are all sunken with much warty layer on the pit border.

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