文章基本信息

标题：Axial resin duct quantification in tree rings: A functional defense trait
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作者：Sharon M. Hood ; Charlotte C. Reed ; Jeffrey M. Kane 等
期刊名称：MethodsX
印刷版ISSN：2215-0161
电子版ISSN：2215-0161
出版年度：2020
卷号：7
页码：1-11
DOI：10.1016/j.mex.2020.101035
语种：English
出版社：Elsevier
摘要：AbstractResin ducts in the secondary xylem of tree rings are a measure of a tree's defense capacity from insects and pathogens. Because resin ducts are permanently embedded within the xylem, retrospective analysis can be performed to quantify changes in defense over time and determine factors that contribute to this change, such as climate and disturbance. Here, we provide methods on how to measure axial resin ducts in secondary xylem. These methods provide the necessary protocols for consistent quantification of xylem resin ducts and terminology, which will also allow easier cross-comparison among studies in the future. We describe:•Steps to prepare tree cores for resin duct measurements.•Procedure to obtain image and measure individual resin ducts.•Software code to compile duct measurements into a complete chronology with both standardized and unstandardized resin duct metrics for further analyses.Graphical abstractDisplay Omitted
关键词：Duct;Canal;Tree defense;Wood anatomy;Tree resistance;Oleoresin;Xylem;Dendroecology