文献类型：期刊文献

英文题名：Radial variation of wood anatomical characteristics and demarcation of juvenile and mature wood in two slash pine (Pinus elliottii) half-sib families

作者：Liu, Xiaomin[1,2] Ma, Lingyu[1,2] Zhan, Weihui[1,2] Jiang, Xiaomei[1,2] Wang, Zhe[3] Xie, Wei[4] Guo, Juan[1,2] Yin, Yafang[1,2]

第一作者：Liu, Xiaomin

通信作者：Ma, LY[1];Ma, LY[2]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Wood Collect Chinese Acad Forestry, Beijing 100091, Peoples R China;[3]Guangdong Forestry Acad, Guangzhou 512520, Guangdong, Peoples R China;[4]Taishan Hongling Seed Orchard, Taishan 529200, Guangdong, Peoples R China

年份：2025

卷号：46

期号：4

起止页码：612-634

外文期刊名：IAWA JOURNAL

收录：;Scopus(收录号：2-s2.0-105019085841);WOS:【SCI-EXPANDED(收录号:WOS:001620347800004)】；

基金：We gratefully acknowledge Dr Long Liang from the Institute of Chemical Industry of Forest Products for sample collection, and we are grateful to Mr Yonggang Zhang from the Research Institute of Wood Industry for assistance with sample sectioning. We thank Professor Yongdong Zhou from the Research Institute of Wood Industry for advice on the manuscript. Research funding was provided by Biological Breeding-National Science and Technology Major Project (2023ZD0405905) .

语种：英文

外文关键词：demarcation; Pinus elliottii; radial variation; third-order polynomial regression model; tracheid cell

摘要：-Understanding the radial anatomical variation and determining the transition between juvenile and mature wood is crucial for enhancing harvesting efficiency and resource utilisation of Pinus elliottii. In this study, two slash pine half-sib families, A04 and A05 less investigated, were selected to study the radial variation of wood anatomical characteristics, i.e. annual ring width, latewood ratio, tracheid length, tracheid length-to-width ratio, double wall thickness, and wall-to-lumen ratio. Specifically, annual ring width decreased from pith to bark, whereas latewood ratio, tracheid length and tracheid length-to-width ratio both of earlywood and latewood, double wall thickness and wall-to-lumen ratio of latewood increased. Moreover, annual ring width, latewood ratio, tracheid length and tracheid length-to-width ratio both of earlywood and latewood, and wall-to-lumen ratio of earlywood were identified as suitable for distinguishing juvenile from mature wood. Additionally, the double wall thickness of latewood proved effective for demarcation in A05. Nevertheless, results revealed that double wall thickness of both earlywood and latewood, as well as wall-to-lumen ratio of latewood, were insensitive indicators for demarcation in A04. Similarly, the double wall thickness of earlywood and the wall-to-lumen ratio of latewood were not sensitive to the demarcation between juvenile and mature wood in A05. Furthermore, the transition from juvenile to mature wood of two half-sib families was evaluated using a segmented regression model and a cubic polynomial third-order regression model. Distinct maturation patterns illustrated A04 exhibited juvenile wood formation during the period of years from 2 to 10, followed by a transitional period from 10 to 15 years before reaching maturity from 15 to 18 years, while A05 demonstrated different development with the transition from 8 to 11 years. Furthermore, a third-order polynomial regression model was fitted for each anatomical trait within distinct growth stages. Systematic anatomical characteristics and determination of juvenile and mature wood constitute critical evidence for guiding family selection in silviculture and optimising processing parameters in wood industries.