基于木材化学组分的银杏系统进化问题研究

采用傅里叶变换红外光谱(FTIR)法测定了银杏、苏铁、毛白杨等22个针阔树种木材的红外光谱，分析了指纹区内吸收峰数目差异以及纤维素、木质素两种物质的特征吸收峰位置和相对强度的变化规律，进而探讨了银杏的系统进化问题。结果表明：银杏的红外光谱与苏铁差异较大，与松杉类等针叶树种比较相似，说明银杏在木材的化学组成上较苏铁更为进化，与松杉类等针叶树有较近的亲缘关系;银杏木材木质素的含量较一般针叶树高，这可能是一种遗留下来的古老性状;银杏木材中含有较多的紫丁香基木质素，表明银杏有向阔叶树进化的趋势。

Research on Systematic Evolution of Ginkgo Biloba Based on Chemical Composition of Wood

In the present article,the authors mensurated the infrared spectra of 22 conifer and broadleaf trees such as ginkgo biloba L.,cycas revoluta thunb.,Populus tomentosa Carr and so on using FTIR,analyzed the difference of a number of absorb peaks in fingerprint area,the characteristic absorb peak position of cellulose and lignin of these trees and their alternation regulations of relative intensity,then discussed the evolutional issue of ginkgo biloba.The results show that ginkgo biloba is different from cycas...