外来物种大花金鸡菊不同器官成分的气质联用（GC-MS）分析

 为进一步探讨大花金鸡菊Coreopsis grandiflora的化感作用，并寻找其化感组分，采用气相色谱-质谱联用技术（GC-MS）对大花金鸡菊叶、根及花化学成分进行了分析。结果表明：大花金鸡菊3种不同器官共含有56种化合物，酚类和萜烯类是其主要组分。大花金鸡菊叶中含有37种化合物，其主要成分有2-甲基苯甲醛（13.00%），香橙烯氧化物（10.08%）及丁香酚（5.67%）等；根中含有38种化合物，其主要成分有高香草酸甲酯（13.59%），姜酚（7.99%）及香橙烯氧化物（6.47%）等；花中含有35种化合物，其主要成分有香橙烯氧化物（13.61%），长叶醛（9.43%）及丁香酚（7.90%）等。表1参24

Organic compounds in exotic Coreopsis grandiflora using GC-MS

To further clarify the allelopathic effects of the exotic Coreopsis grandiflora.plant and to determine its allelopathic components,chemical components of the leaf,root,and flower were analyzed by gas chromatography/mass spectrometry(GC-MS).Results showed 56 compounds in different organs of C.grandiflora.with phenols and terpenes being the main components.In leaves,37 compounds were identified;the main compounds were 2-Tolualdehyde(13.0%),aromadendrene oxide(10.1%),and eugenol(5.7%).In the roots,38 compounds were identified;the primary compounds were homovanillic acid methyl ester(13.6%),gingerol(8.0%),and aromadendrene oxide(6.5%).In the flower,35 compounds were identified;the main compounds were aromadendrene oxide(13.6%),longifolenaldehyde(9.4%),and eugenol(7.9%).