杨树湿心材的化学特性及形成机理研究*

摘要/Abstract

摘要：

采用等离子光谱、傅立叶红外光谱以及电子自旋共振谱等技术分析杨树不同生长年轮部位木材的化学特性。结果显示, 杨树湿心材中较高浓度的无机物质是其显著的化学特性之一。湿心材中较高含量的有色化学物质多元酚、有机酸和酯类化合物以及来源于酚羟基、羰基等的含氧自由基与湿心材的变色密切相关。此外, 湿心材含量的遗传分析结果表明, 湿心材性状主要是由无性系基因型控制的。

关键词: 杨树, 湿心材, 化学特性, 变色

Abstract:

Isoion spectrum, Fourier Transform Infrared Spectroscopy and Electron spin resonance spectrum were used to analyze chemical properties of the wood in different year-ring parts in this experiment.The results showed that there was a greater variation in chemical characteristics between wetheartwood and normal sapwood.Compared with sapwood, wetheartwood contained much higher ash and the inorganic elements such as K, Ca, Na, etc.It is evident that there were polyphenols acids, esters and free radicals which affected the colour and the water content in the heartwood.Moreover, it appeared that the characteristic of wetheartwood depanded mainly on the genotype of the clones.

Key words: Poplar, Wetheartwood, Chemical characteristics, Discolouration

诸葛强,黄敏仁,潘惠新,李火根,封维忠. 杨树湿心材的化学特性及形成机理研究^*[J]. 林业科学, 1997, 33(3): 259-266.

Qiang Zhuge,Minren Huang,Huixin Pan,Huogen Li,Weizhong Feng. STUDY ON CHEMICAL CHARACTERISTICS AND FORMATION MECHANISM OF POPLAR WETHEARTWOOD[J]. Scientia Silvae Sinicae, 1997, 33(3): 259-266.

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