不同地理分布水松叶挥发性成分差异  

Differences in Volatile Components of Glyptostrobus pensilis Leaves from Different Geographic Distributions

作　　者：杨晓娟 刘世男[1] 邓必玉 卢志海 黄安书 梁永延 YANG Xiaojuan;LIU Shinan;DENG Biyu;LU Zhihai;HUANG Anshu;LIANG Yongyan(College of Forestry,Guangxi University/Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation,Nanning,Guangxi 530004,China;Guangxi Forest Resources and Environment Monitoring Center,Nanning,Guangxi 530028,China;Guangxi Beihai Wetland Ecosystem National Observation and Research Station,Beihai,Guangxi 536000,China)

机构地区：[1]广西大学林学院/广西高校亚热带人工林培育与利用重点实验室,广西南宁530004 [2]广西壮族自治区森林资源与生态环境监测中心,广西南宁530028 [3]广西北海湿地生态系统国家定位观测研究站,广西北海536000

出　　处：《热带作物学报》2025年第2期440-446,共7页Chinese Journal of Tropical Crops

基　　金：中央财政林业草原生态保护恢复资金国家重点野生保护植物保护补助项目(No.502039202309);广西林业科技推广示范项目(No.2024GXLK20)。

摘　　要：为探究水松(Glyptostrobus pensilis)叶挥发性成分的地理变化规律,本研究采用GC-MS方法测定广西6个地理分布(宾阳县、天等县、雁山区、苍梧县、平乐县和覃塘区)的野生水松叶挥发物成分。结果表明:不同地理分布水松叶挥发性成分共检测出139种化学成分,其中,萜烯类的α-蒎烯和D-柠檬烯在各地理分布中的相对含量均较高,分别为18.61%~28.32%、16.80%~49.02%。通过对比6个地理分布水松叶挥发性成分发现,覃塘区水松叶挥发物种类最少,宾阳县的最多;雁山区的醇类、芳香烃类、醚类、醛类、萜烯类、酮类和酯类相对含量均最低,而天等县的芳香烃类、酚类、醚类、醛类、酸类、萜烯类和烷烃类相对含量均最高。不同地理分布水松叶挥发性成分主成分分析表明,前3个主成分累计贡献率达97.53%,可以反映大部分成分信息,其中,醚类、萜烯类、烷烃类、芳香烃类、酸类、烯烃类、酚类、酯类、酮类、醇类和其他类的特征向量绝对值较大,是区分不同地理分布水松的差异性物质。聚类分析结果显示,覃塘区、苍梧县和雁山区聚为一组,平乐县和宾阳县聚为一组,天等县单独为一组。挥发性成分与环境因子的相关性分析表明,经度和海拔对挥发性成分含量的影响最大。本研究结果可为水松的培育和资源利用提供参考依据。GC-MS method was utilized to determine the volatile components of wild Glyptostrobus pensilis leaves from six geographic distributions in Guangxi(Binyang county,Tiandeng county,Yanshan district,Cangwu county,Pingle county and Qintang district)to investigate the geographic variation patterns of volatile components in the leaves.A total of 139 chemical components were detected in the volatile components of the leaves from different geographic distribu-tions.Terpenesα-pinene and D-limonene had relatively high contents across all geographic distributions,ranging from 18.61%to 28.32%and 16.80%to 49.02%,respectively.Qintang had the fewest volatile species,while Binyang had the most.The relative contents of alcohols,aromatic hydrocarbons,ethers,aldehydes,terpenes,ketones and esters were the lowest in Yanshan,whereas the relative contents of aromatic hydrocarbons,phenols,ethers,aldehydes,acids,terpenes and alkanes were the highest in Tiandeng.Principal component analysis(PCA)showed that the cumulative contribution rate of the first three principal components reached 97.53%,reflecting most of the component information.The absolute values of characteristic vectors for ethers,terpenes,alkanes,aromatic hydrocarbons,acids,olefins,phenols,lipids,ke-tones,alcohols and other compounds were larger,indicating these are the differential substances distinguishing the dif-ferent geographic distributions of G.pensilis.Cluster analysis results showed that Qintang,Cangwu and Yanshan clus-tered into one group,Pingle and Binyang clustered into another group,and Tiandeng formed a separate group.Correla-tion analysis between volatile components and environmental factors indicated that longitude and altitude had the greatest impact on the content of volatile components.The study would provide reference for the cultivation and re-source utilization of G.pensilis.

关 键 词：水松 挥发性成分 GC-MS 地理变化 

分 类 号：S791.24[农业科学—林木遗传育种] R284.1[农业科学—林学]