[1]石江涛,丁笑红,王旭军. 湿地松7个无性系木材管胞形态和木材密度的研究[J].西北林学院学报,2018,33(2):188-192.[doi:10.3969/j.issn.1001-7461.2018.02.30]
　SHI Jiang-tao,DING Xiao-hong,WANG Xu-jun. Wood Tracheid Morphology and Wood Density in Seven Clones of Pinus elliottii [J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(2):188-192.[doi:10.3969/j.issn.1001-7461.2018.02.30]
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 湿地松7个无性系木材管胞形态和木材密度的研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第2期
页码:
188-192
栏目:
出版日期:
2018-03-31

文章信息/Info

Title:
 Wood Tracheid Morphology and Wood Density in Seven Clones of Pinus elliottii
文章编号:
1001-7461(2018)02-0188-05
作者:
 石江涛1; 丁笑红1; 王旭军2
 （1.南京林业大学 材料学院木材科学系，江苏 南京 210037；2.湖南省林业科学院 林下经济研究所，湖南 长沙 410004）
Author(s):
 SHI Jiang-tao1; DING Xiao-hong1; WANG Xu-jun2
 (1.Department of Wood Science,College of Material Science and Engineering,Nanjing Forestry University,Nanjing,Jiangsu 210037,China; 2.Forests Economy Instituion,Hunan Academy of Forestry,Changsha,Hunan 410004,China)
关键词:
 ; 湿地松; 木材性质; 基本密度; 管胞长度; 管胞宽度
Keywords:
Pinus elliottii;  wood property;  basic density;  tracheid length;  tracheid width
分类号:
S781.31
DOI:
10.3969/j.issn.1001-7461.2018.02.30
文献标志码:
A
摘要:
 以湿地松7个无性系木材为对象，体视显微镜下利用测微仪测定生长轮宽度和早晚材宽度，木材解离后光学显微镜下观察测量管胞长度和宽度，计算总晚材率和管胞长宽比；采用排水法测定木材的基本密度和气干密度。结果表明，无性系之间年轮宽度在0.05水平上差异极显著。总晚材率和木材基本密度在0.05水平上差异并不显著，编号为0-1302的无性系木材的基本密度最大。但是气干密度在0.05水平上差异显著。无性系之间早材管胞长度和宽度差异较大，晚材的差异较小；早材和晚材管胞长宽比分别为62.7~85.9和92.4~116.9。早、晚材管胞长度主要分布在2 500~4 500 μm，均为中等长度。说明木材气干密度、年轮宽度和管胞形态等材性在湿地松无性系之间具有较明显差异。该结果为湿地松优质人工林木材的培育提供了科学依据。
Abstract:
 Seven clones of Pinus elliotii were chosen as the research objects to measure the wood growth ring width,the earlywood and latewood width by micrometer under stereomicroscope.The tracheid length and width were observed and determined by using microscope after wood was macerated.Then the total latewood percentage and tracheid length-width ratio were calculated.Wood basic density and air density were measured by drainage method.There were high significant differences in growth ring width at 0.05 level between these clones.The total latewood percentage and wood basic density showed no significant difference among 7 clones at 0.05 level.However,the air density in all clones had significant differences at 0.05 level.Wood of clone 0-1302 had the biggest basic density.The tracheid length and width in early wood showed larger differences among 7 clones,in latewood,however,the differences were not significant.The tracheid length-width ratios in early-and late-wood were 62.7-85.9 and 92.4-116.9,respectively.The tracheid length distribution frequency in early wood and late-wood was mainly from 2 500 μm to 4 500 μm,suggesting that wood tracheid is medium length in all the 7 clones.As a result,the wood air density,growth ring width and tracheid morphology showed obvious differences in P.elliottii inter-family.The results would provide scientific information for high quality wood plantation breeding in P.elliottii.

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备注/Memo

备注/Memo:
 收稿日期：2017-06-13修回日期：2017-09-20
基金项目：江苏省高校优势学科建设工程资助项目（PAPD）；南京林业大学青年科技创新基金（CX2015018）。
作者简介：石江涛，男，博士，讲师，研究方向：木材性质与功能性改良。E-mail:shijt@njfu.edu.cn
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