title: The Emission of the Floral Scent of Four Osmanthus fragrans Cultivars in Response to Different Temperatures.
abstract: Floral scent is an important part of volatile organic compounds (VOCs) emitted from plants, and is influenced by many environmental and endogenous factors. To investigate the influence of temperature on the emission of the floral scent ofOsmanthus fragrans, the number of chemical compounds and their relative release amounts from four cultivars ofO. fragransunder different temperature treatments, were identified using the solid-phase microextraction (SPME) technique and gas chromatography-mass spectrometry (GC-MS) in this study. Results revealed that the numbers and release amounts of floral scent components were significantly influenced by different temperatures, and depend on different cultivars and different types of compounds. Overall, most cultivars had the largest number of chemical compounds in 19 °C and the numbers of chemical compounds decreased with the increase or decrease in the temperature. Alcohols and ketones were the two main kinds of compounds responding to temperature change. The response of a specific chemical compound to temperature change was different in four cultivars. Generally, linalool, α-ionone, β-ionone, and γ-decalactone accounted for the highest proportion in the nine main compounds, and changes of these four chemical compounds to different temperatures had obvious contributions to the floral scent ofO. fragrans. The results obtained provide evidence that temperatures can greatly influence the emission of floral scent.
authors.affiliation: Department of Ornamental Horticulture, School of Landscape Architecture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. fujianxin2008@sohu.com.
authors.forename: Jianxin
authors.initials: J
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. houxiaohou15@aliyun.com.
authors.forename: Dan
authors.initials: D
authors.lastname: Hou
authors.affiliation: Department of Ornamental Horticulture, School of Landscape Architecture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. zhangchao24804@gmail.com.
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Department of Ornamental Horticulture, School of Landscape Architecture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. bao99928@188.com.
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Bao
authors.affiliation: Department of Ornamental Horticulture, School of Landscape Architecture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. zhaohb@zafu.edu.cn.|State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an 311300, China. zhaohb@zafu.edu.cn.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Zhao
authors.affiliation: College of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China. 13600512490@163.com.
authors.forename: Shaoqing
authors.initials: S
authors.lastname: Hu
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D029592:Oleaceae / Q000737:chemistry*; D064209:Phytochemicals / Q000737:chemistry; D052617:Solid Phase Microextraction; D013696:Temperature; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D064209:Phytochemicals; D055549:Volatile Organic Compounds
keywords: GC-MS; Osmanthus fragrans; SPME; floral scent; temperature; volatile organic compounds