Floral scent chemistry of Nuphar japonica (Nymphaeaceae)
Floral scent chemistry of Nuphar japonica (Nymphaeaceae)
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睡莲科（Nuphar japonica）的花香化学
DOI：
10.1016/j.bse.2012.12.019
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发表时间：
2013
影响因子：
1.6
通讯作者：
H.
中科院分区：
文献类型：
--
作者：
Azuma;H.
N.的花2004年至2011年，从日本滋贺和岐阜县以及京都大学植物园的溪流或池塘中生长的个体植物中采集了具有不同花期的japonica。这些开花阶段包括：（1）几乎所有的雄蕊都紧紧贴在雌蕊群上（阶段1，可能是开花的第一天），（2）大约一半的雄蕊（外面）向后弯曲（阶段2），（3）几乎所有的雄蕊向后弯曲（阶段3）。共检测到39种化合物。主要的香味化合物包括十一烷、柠檬烯、香芹烯、十五烷和壬烷;还获得了少量的含氧单萜，例如丁香醛和苯甲醛，例如1，4-二甲氧基苯。不同花期的化学成分没有明显差异。然而，十一烷，在第1阶段检测到的主要挥发性物质，随着花的年龄急剧下降。这一发现的化学分类学意义进行了讨论。
Flowers ofN. japonicashowing different floral stage were sampled between 2004 and 2011 from individual plants growing in streams or ponds in Shiga and Gifu Prefectures, Japan, and the Botanical Garden of Kyoto University. These flower stages included: (1) almost all the stamens were tightly appressed to the gynoecium (stage 1, probably the first day of anthesis), (2) about half of the stamens (outside) were bent backward (stage 2), and (3) almost all the stamens were bent backward (stage 3). A total of 39 compounds were detected. The major scent compounds included undecane, limonene, caryophyllene, pentadecane and nonane; minor amounts of oxygenated monoterpenes, e.g. lilac aldehydes, and benzenoids, e.g. 1,4-dimethoxybenzene, were also obtained. There was no substantial difference among the chemical profiles of the different flower stages. However, undecane, the main volatile detected at stage 1, drastically decreased with the age of the flower. The chemotaxonomic significance of this finding is discussed.