北京林业大学学报2017，Vol.39Issue(6)：85-95,11.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 in Lagerstroemia indica'Xiang Xue Yun'
摘要
Abstract
This study aims to determine the spatial-temporal variability of volatile components of Lagerstroemia 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 of L. 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 from L. 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 of L. indica 'Xiang Xue Yun'. This study lays a good foundation to understand the volatile organic compounds of Lagerstroemia plants and to provide the basis for fragrant breeding of crape myrtle.关键词
紫薇'香雪云'/挥发性成分/顶空-固相微萃取/时空表达Key words
Lagerstroemia indica 'Xiang Xue Yun '/volatile compound/HS-SPME-GC-MS/spatial-temporal expression分类
农业科技引用本文复制引用
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):85-95,11.基金项目
国家自然科学基金项目(31500574)、北京市青年英才计划项目(YETP0743)、福建省科技计划项目(2014N3012)、北京市共建项目专项资助(2016GJ-03). （31500574）
