Baek Yun-Su, Ramya Mummadireddy, An Hye-Ryun, Park Pil-Man, Lee Su-Young, Baek Nam-In, Park Pue-Hee
Floriculture Research Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea.
Agency for Korea National Food Cluster (AnFC), Foodpolis110, Dongchonje-gil, Wanggung-myeon, Iksan-si, Jeollabuk-do 54576, Korea.
Plants (Basel). 2019 Jul 27;8(8):251. doi: 10.3390/plants8080251.
is one of the most important genera of flowering plants in the Orchidaceae family, and comprises a wide variety of beautiful and colorful species. Among these, only a few species possess floral scents and flavors. In order to increase the availability of a new hybrid, "Sunny Bell", this study investigated the volatile floral scents. Volatiles of the floral organs of the new hybrid, "Sunny Bell", at the full-flowering stage were characterized with headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) analysis. A divinylbenzene-carboxen-polydimethylsiloxane (DVB-CAR-PDMS) fiber gave the best extraction for volatile components. Twenty-three components were identified as the main volatiles for the floral organs of the new hybrid, "Sunny Bell" at the full-flowering stage; twelve compounds in the column, sixteen compounds in the labellum, eleven compounds in the sepals, and nine compounds in the petals were identified. Terpenes are the major source of floral scents in this plant. As a result of GC-MS analysis, the most abundant compound was linalool (69-80%) followed by α-pinene (3-27%), 4,8-dimethyl-1,3,7-nonatriene (5-18%), eucalyptol (6-16%), and 2,6-dimethylnonane (2-16%). The main components were identified as monoterpenes in the petals and sepals, and as monoterpenes and aliphatics in the column and labellum. The results of this study provide a basis for breeding cultivars which exhibit desirable floral scents.
是兰科中最重要的开花植物属之一，包含各种各样美丽多彩的物种。其中，只有少数物种具有花香和风味。为了增加新杂交种“阳光铃铛”的可得性，本研究对其挥发性花香进行了调查。采用顶空固相微萃取气相色谱 - 质谱联用（HS - SPME - GC - MS）分析法对新杂交种“阳光铃铛”盛花期花器官的挥发物进行了表征。二乙烯基苯 - 碳分子筛 - 聚二甲基硅氧烷（DVB - CAR - PDMS）纤维对挥发性成分的萃取效果最佳。鉴定出23种成分是新杂交种“阳光铃铛”盛花期花器官的主要挥发物；在蕊柱中鉴定出12种化合物，在唇瓣中鉴定出16种化合物，在萼片中鉴定出11种化合物，在花瓣中鉴定出9种化合物。萜类是该植物花香的主要来源。气相色谱 - 质谱分析结果显示，含量最丰富的化合物是芳樟醇（69 - 80%），其次是α - 蒎烯（3 - 27%）、4,8 - 二甲基 - 1,3,7 - 壬三烯（5 - 18%）、桉叶素（6 - 16%）和2,6 - 二甲基壬烷（2 - 16%）。花瓣和萼片中的主要成分鉴定为单萜类，蕊柱和唇瓣中的主要成分鉴定为单萜类和脂肪族类。本研究结果为培育具有理想花香的品种提供了依据。
