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    徐婉, 蔡明, 潘会堂, 张启翔. 紫薇‘香雪云’香气成分时空动态变化研究[J]. 北京林业大学学报, 2017, 39(6): 85-95. DOI: 10.13332/j.1000-1522.20160289
    引用本文: 徐婉, 蔡明, 潘会堂, 张启翔. 紫薇‘香雪云’香气成分时空动态变化研究[J]. 北京林业大学学报, 2017, 39(6): 85-95. DOI: 10.13332/j.1000-1522.20160289
    XU Wan, CAI Ming, PAN Hui-tang, ZHANG Qi-xiang. Study on spatial-temporal variability of volatile components inLagerstroemia indica 'Xiang Xue Yun'[J]. Journal of Beijing Forestry University, 2017, 39(6): 85-95. DOI: 10.13332/j.1000-1522.20160289
    Citation: XU Wan, CAI Ming, PAN Hui-tang, ZHANG Qi-xiang. Study on spatial-temporal variability of volatile components inLagerstroemia indica 'Xiang Xue Yun'[J]. Journal of Beijing Forestry University, 2017, 39(6): 85-95. DOI: 10.13332/j.1000-1522.20160289

    紫薇‘香雪云’香气成分时空动态变化研究

    Study on spatial-temporal variability of volatile components inLagerstroemia indica 'Xiang Xue Yun'

    • 摘要: 为了研究紫薇‘香雪云’香气成分的时空动态变化,本文利用顶空-固相微萃取结合气相色谱-质谱(HS-SPME-GC-MS)联用技术,分析‘香雪云’花朵挥发性成分在4个开花时期(半开期、盛开期、盛开末期、衰败期)和盛开期花朵的3个花器官部位(花瓣、雄蕊、雌蕊)中的释放规律。结果表明:1)从紫薇‘香雪云’花朵的4个开花时期中,共检测出80种挥发性成分,分别属于11个类别;倍半萜类、单萜类和苯类化合物是其中具有较高质量分数的化合物类别;α-法尼烯、松香芹酮和苯乙醇等是盛开期中具有较高质量分数的挥发性成分。2)在紫薇‘香雪云’的不同开花阶段,各挥发性成分的释放规律不同;共呈现出6种主要的挥发模式,即持续下降模式、先下降后上升模式、先下降后上升再下降模式、持续上升模式、先上升后下降模式和先上升后下降再上升模式。3)就花器官而言,花瓣中的苯类化合物和萜类化合物的质量分数均较高;雌蕊和雄蕊中则均以萜类化合物为主,但化合物种类及其质量分数也存在较大差异。研究结果为了解紫薇属植物的香气成分奠定了基础,为紫薇香花定向育种提供了依据。

       

      Abstract: This study aims to determine the spatial-temporal variability of volatile components ofLagerstroemia indica 'Xiang Xue Yun' by headspace solid micro-extraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). The aroma compounds of flowers at four different developmental periods(middle-opening period, full-opening period, late-blooming period, bloom-declining period) and three floral organs(petal, stamen, pistil) in full-opening period were studied. The results showed that: 1) eighty volatile compounds belonging to 11 categories were identified from flowers during the whole flowering process ofL.indica'Xiang Xue Yun', of which, sesquiterpenes, monoterpenes and benzenoids were the main categories with high mass fraction and α-farnesene, pinocarvone and phenylethyl alcohol were the major volatile components emitted with high mass fraction. 2) Volatile compounds emitted fromL.indica 'Xiang Xue Yun' flower during flowering showed six different modes: the continuely-declining pattern; declining first and then rising pattern; the pattern of declining first, rising later and then declining again; continuely-rising pattern; rising first and then declining pattern; the pattern of rising first, later declining and then rising again. 3) In petals, the mass fraction of benzenoids and terpene compounds was high, while in pistil and stamen, the relative content of terpene compounds was high. But the volatile compounds and their mass fraction were distinctly different at different floral organs ofL.indica 'Xiang Xue Yun'. This study lays a good foundation to understand the volatile organic compounds ofLagerstroemia plants and to provide the basis for fragrant breeding of crape myrtle.

       

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