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Scientia Silvae Sinicae ›› 2019, Vol. 55 ›› Issue (3): 22-35.doi: 10.11707/j.1001-7488.20190303

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Comparison of Chemical Constituents of Volatile Compounds in Thuja plicata and Thuja occidentalis Seedlings Leaves of Different Provenances

Ni Yanyan1,2, Xiao Wenfa2, Liu Jianfeng1, Zhang Yuting1, Hu Jun3   

  1. 1. State Forestry Administration Key Laboratory of Tree Breeding and CultivationResearch Institute of Forestry, CAF Beijing 100091;
    2. Key Laboratory of Forest Ecology and Environment of State Forestry Administration, Research Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091;
    3. Nanchang Institute of Forestry Nanchang 330004
  • Received:2018-01-28 Revised:2018-07-20 Online:2019-03-25 Published:2019-04-17

Abstract: [Objective]To provide a theoretical basis for further development and utilization of the Thuja's resources, the composition and relative content of chemical constituents of essential oils from leaves of Thuja plicata and Thuja occidentalis from different provenances were analyzed.[Method]The healthy 2-year-old seedlings with same size and consistent growth were selected as study materials. The volatile components of new leavesin the same position of seedlings from different provenances were extracted by solid-phase micro-extraction(SPME),and separated and identified by gas chromatography-mass spectrometry (GC-MS). Qualitative analysis was carried out by mass spectrometry and the relative content of volatile components was calculatedby peak area normalization.[Result]A total of 156 chemical components of essential oils of T.plicata and T.occdentalis were identified, among which 74 components were identified in T.plicata, and95 components in T.occdentalis. The volatile components of the two species from 10 provenances were dominated by monoterpenes, and the average relative content of T.plicata (80.258%) was higher than that of T.occdentalis (69.445%), but not forthe sesquiterpenoidsand other terpenoids.The two specieswere significantly differentin the composition of the essential oil. For example, 27 components were uniquely obtainedfrom 5 T.plicata provenancesand 35 components from 5 T.occdentalis provenances. There were only 6 common components in 10 provenances and their contents were significantly different The common components wereα-Thujone, γ-Terpinene, (8β,13β)-13-methyl-17-Norkaur-15-ene, α,α-4-trimethyl-3-cyclohexene-1-methanol acetate, Caryophyllene and Hexadecanoic acidmethyl ester, respectively.The main components ofthe essential oildiffered obviously betweentwo species. The same main componentswere only thujone and β-phellandrene whichcontents were the highestinT.plicata and T.occdentalis.[Conclusion]The chemical compositionand content of essential oils from leaves of T.plicata and T.occdentalis in different provenances weresignificantlydifferent, but the content of thujone was the highest in both species.

Key words: Thuja plicata, Thuja occidentalis, volatile component, solid phase micro-extraction(SPME), gas chromatography-mass spectrometry(GC-MS)

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