title: [Microanalysis study on lignin distribution of wood with different growth stress level by SEM-EDXA].
abstract: By virtue of FE-SEM and EDXA marked by Br element, the relationship between the lignin distribution and growth stress was micro-analyzed by normal wood of plantation Eucalyptus urophylla X E. grandis with different growth stress levels. The results indicated that the lignin contents of different cell wall layers were not related to the growth stress level, and the lignin content (from high level to low level) in sequence was cell corner, compound middle lamellae, S1, S2 and S3; The lignin contents in micro-morphological regions of wood fiber cell wall were decreased with the increase in growth stress and lignification process was delayed.
authors.affiliation: Beijing Museum of Natural History, Beijing 100050, China. happier114@sina.com
authors.forename: Xiao-li
authors.initials: XL
authors.lastname: Liu
authors.forename: Ya-fang
authors.initials: YF
authors.lastname: Yin
authors.forename: Xiao-mei
authors.initials: XM
authors.lastname: Jiang
authors.forename: Ming-ming
authors.initials: MM
authors.lastname: Bian
mesh_terms: D002473:Cell Wall; D005052:Eucalyptus; D008031:Lignin; D008855:Microscopy, Electron, Scanning; D013052:Spectrometry, X-Ray Emission; D014934:Wood
chemical_list: D008031:Lignin