Study On The Aromatic Composition Of Wild Thymus L. In Shanxi Province

In recent years,the research of aromatic plants is more and more in-depth.Because of its special fragrance,aromatic plants have not only ornamental value,but also medical and economic value.Thyme is a whole fragrant labiatae plant with long flowering period,easy cultivation and strong antireversion force.In this study,wild thyme introduced and cultivated as experimental materials,they originated from eight different provenances in Shanxi Province.In the experiment,we need to observe the phenological period of thyme and compare the difference of the composition in the direction of thyme flowers.Meanwhile,It is necessary to analyze the aromatic components of the branches and leaves in the flourishdle and late flowering stages of thyme.The aim of this study is to screen the provenances with good ornamental value and aromatic components.It provides a theoretical basis for the screening,development and utilization of aromatic plants.The main results are as follows:1.The germination period of thyme in the experiment was mainly from March to April.Among them,Fanchi,right jade,sprout the earliest,in early March has begun to sprout,in the flourishdle of you can see the obvious small leaf blade.Zuo Yun,Qinyuan and Zezhou were the last to emerge,only to see the budding at the end of 3 months.Fanchi and Youyu had the earliest flowering time,and at the end of April,some plants began to bloom.In early June,the tiller and thyme were cloned and grown.At the beginning of September,only Xia County was in late flowering stage,and the flowers in other sources had almost completely withered.The seed source of Xiaxian has long flowering period,higher plant growth,larger leaves,larger flowers than other sources of thyme plants,and the plants entered the wilting stage at the end of October.2.Determination of aromatic substances of Thyme from 8 sources by GC-MS.The aromatics content of wild thyme flowers in 8 sources ranged from high to low in the following order:Xiaxian(63.06)>Hunyuan(39.27)>Zuo Yun(32.88)>Qinyuan(31.79)>Zezhou(30.62))>right jade(26.51)>Puxian(25.822)>Fanchi(23.7575).The aromatic substances were determined to be 43 species of Zuo Yun(43 species)>39 species of Hunyuan(39 species)>38 species of Qinyuan(37 species)>36 species of Fanchi(36 species = 36 species of Pu County)>35 species of Youyu(35 species = 35 species of Xiaxian).The results showed that the aromatic components of thyme flowers from different sources were different,and the contents of aromatic substances were different.The content of aromatic substances was the highest in Xiaxian County.3.GC-MS method was used to determine the aromatic substances in the branches and leaves of Thyme from 8 different sources.The results showed that the aromatic substances in the branches and leaves of thyme were different in different periods,and the contents of aromatic substances were different.The flowering period of qinyuan and hun yuan thyme contains high quality aromatic components of paraffin hydrocarbons,which are relatively high in content and concentrated in distribution.