Floral Scent in Salix L. and the Role of Olfactory and Visual Cues for Pollinator Attraction of Salix caprea L.
Floral Scent in Salix L. and the Role of Olfactory and Visual Cues for Pollinator Attraction of Salix caprea L.
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柳树的花香以及嗅觉和视觉线索对柳树传粉者吸引的作用。
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
U. Füssel
中科院分区：
文献类型：
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作者：
U. Füssel
对32种欧洲柳属植物和2种亚洲柳属植物的花香成分进行了研究。种（杨柳科）进行了分析。种内和种间变异进行了比较的一个子集的8个物种。采用顶空微固相萃取技术，对柳属植物雌雄异株的花香进行了动态顶空微固相萃取，并采用GC-MS联用技术进行了分析，共检测出48种化合物，主要为类异戊二烯和苯并呋喃。常见的化合物包括反式-β-罗勒烯、顺式-β-罗勒烯、苯甲醛、D-柠檬烯、α-蒎烯、乙酸顺式-3-己烯酯、芳樟醇、1，4-二甲氧基苯和β-蒎烯。1，4-二甲氧基苯和反式-β-罗勒烯是引起种间变异的主要化合物。在一个子集的八个广泛采样的物种，六个有一个特征的花香成分，一半的成对物种比较证实了显着差异。在这8个物种中，有3个物种的种内变异可以用性别差异来解释。柳花香味的变化可能提供特定的信号，引导传粉者，从而有助于生殖隔离的兼容和共存的物种。
The floral scent composition of 32 European and two Asian Salix L. species (Salicaceae) was analyzed. Intraand interspecific variation was compared for a subset of 8 species. All Salix species are dioecious and floral scent was collected from both male and female individuals by using a dynamic headspace MicroSPE method, and analyzed by GC-MS. A total of 48 compounds were detected, most of them being isoprenoids and benzenoids. Commonly occurring compounds included trans-β-ocimene, cis-β-ocimene, benzaldehyde, D-limonene, α-pinene, cis-3-hexenyl aceatate, linalool, 1,4-dimethoxybenzene, and β-pinene. Two compounds, 1,4-dimethoxybenzene and trans-β-ocimene, were responsible for most of the interspecific variation. In a subset of eight extensively sampled species, six had a characteristic floral scent composition; half of the pairwise species comparisons confirmed significant differences. In three of these eight species, intraspecific variability could be explained by sex differences. Variation in Salix floral scent may provide specific signals that guide pollinators and thus contribute to the reproductive isolation of compatible and cooccurring species.