Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum
Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum
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DOI：
10.1007/s10086-004-0639-x
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发表时间：
2005-03
影响因子：
2.9
通讯作者：
Hiroyuki Yamamoto;K. Abe;Y. Arakawa;T. Okuyama;J. Gril
中科院分区：
文献类型：
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作者：
Hiroyuki Yamamoto;K. Abe;Y. Arakawa;T. Okuyama;J. Gril
一种70年历史的facer siboldianummiq试样的拉伸木（TW）特性。使用我们在之前的报告中提出的g纤维模型进行分析。在g纤维模型模拟的基础上，讨论了g层在TW木质部(1)高拉伸生长应力、(2)大纵向杨氏模量和(3)高纵向干燥收缩率的成因中的作用。结果表明：木质部成熟过程中，g层在纵向上产生较大的拉应力；绿色g层的纵向杨氏模量显著高于木质化层；此外，在脱湿过程中，g层比木质化层更容易收缩。
The tension wood (TW) properties of a 70-year-old specimen ofAcer sieboldianumMiq. were analyzed by using the G-fiber model that was proposed in our previous report. The roles of the G-layer on the origins of (1) a high tensile growth stress, (2) a large longitudinal Young’s modulus, and (3) a high longitudinal drying shrinkage in the TW xylem are discussed on the basis of the simulations using the G-fiber model. The results suggest that the G-layer generates a high tensile stress in the longitudinal direction during xylem maturation; the longitudinal Young’s modulus of the green G-layer becomes significantly higher than that of the lignified layer; furthermore, the G-layer tends to shrink extraordinarily more than that of the lignified layer during moisture desorption.