杉木无性系生长性状变异分析及选择初探.pdfVIP

分子植物育种，2024年，第22卷，第3期，第892-898页

MolecularPlantBreeding,No.3,892-898

研究报告

ResearchReport

杉木无性系生长性状变异分析及选择初探

赵林峰高建亮李有清*

湖南环境生物职业技术学院园林学院，衡阳，421005

*通信作者，163.com

摘要为初步选育出生长性状优良的杉木无性系资源，以永州市金洞林场21年生杉木无性系试验林为

研究对象，对不同林龄无性系生长性状进行调查分析。结果表明：5~21年生时无性系间树高、胸径和材积变

积均存在极显著差异；相关性分析结果表明，不同林龄无性系生长性状的相关系数均达到显著水平，且都表

现出胸径与材积的相关系数大于树高与材积的相关系数；以胸径为指标选择出4个优良无性系，入选率为

6.15%

20.86%。研究表明21年生选育可靠，选育出来的优良无性系造林可获得巨大的经济效益，可考虑作为优良

无性系在永州山区进行推广。

关键词杉木(Cunninghamialanceolata);无性系;变异;相关系数

VariationofGrowthTraitsandPreliminarySelectionofCunninghamia

lanceolataClones

ZhaoLinfengGaoJianliangLiYouqing

HunanPolytechnicofEnvironmentandBiology,LandscapeArchitectureCollege,Hengyang,421005

*Corresponauthor163.com

DOI:10.13271/j.mpb.022.000892

AbstractInordertoselecttheresourcesofChinesefircloneswithexcellentgrowthcharacters,thegrowth

charactersofdifferentstandageswereinvestigatedandanalyzedbytakingthe21-year-oldteststandofChi-

nesefirclonesinJindongForestFarmofYongzhouCityastheresearchobject.Theresultsshowedthatthe

variationcoefficientsoftreeheight,DBHandvolumewere8.45%~13.95%,9.28%~14.26%and22.83%~32.62%

amongtheclonesat5~21yearsofage,respectively.ThereweresignificantdifferencesinDBH,treeheight

andvolumeamongclonesofdifferentstandages.Theresultsofcorrelationanalysisshowedthatthecorrela-

tioncoefficientsofgrowthtraitsofclonesofdifferentstandagesreachedasignificantlevel,andthecorrela-

tioncoefficientsbetweenDBHandvolumeweregreaterthanthatbetweentreeheightandvolume.Fourclones

wereselectedusingDBHastheselectionindex,andtheselectionratewas6.15%.Comparedwiththecontrol,

DBHandtreeheightincreasedby24.18%and20.19%,respectively.Comparedwiththetotalstand,DBHand

treeheightincreasedby23.94%and20.86%,respectively.Theresultsshowedthatthe21-year-o