Syringa is an important aromatic woody angiosperm that is widely planted in gardens. Its dry flowers are traditionally used to manufacture infusions and spices in China. In this study, the floral volatiles emitted fro...Syringa is an important aromatic woody angiosperm that is widely planted in gardens. Its dry flowers are traditionally used to manufacture infusions and spices in China. In this study, the floral volatiles emitted from nine different Syringa species and varieties, viz. S. chinensis, S. protolaciniata, S. oblata, S. oblata var. giraldii, S. oblata var. plena, S. vulgaris ＇Mrs Harry Bickle＇, S. vulgaris ＇Bright Centennial＇, S. vulgaris ＇White Spires＇, and S. vulgaris ＇President Lincoln＇ were collected by the dynamic headspace technique, and then identified by automated thermal desorption-gas chromatography/mass spectrometry. There were significant differences in components and corresponding contents of floral scent emitted from the nine Syringa species and varieties. Among the detected components, β-ocimene exhibited the highest content, accounting for more than 70 % of the floral scent of S. protolaciniata, S. oblata var. giraldii, and S. vulgaris ＇Bright Centennial＇. A significant daytime variation of floral scent emitted from S. pekinensis was recorded, especially for benzaldehyde, whose content first increased and then decreased. We studied the scent emitted from the in vitro flowers of S. vulgaris ＇Pres Lincoln＇ during the process of natural drying. Alcohol compounds were released in the greatest content, and the content of 2-ethyl-l-hexanol accounted for about 40 % of the total release amount. The results described the emission pattern and mechanisms of floral scent in Syringa.展开更多
基金supported by the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges under Beijing Municipality(IDHT20150503)the National Natural Science foundation of China(31201645)+1 种基金Science and Technology Planning Project of Beijing(Z121100007412003)Building Project of Beijing Laboratory of Urban and Rural Ecological Environment(PXM2015-014207-000014)
文摘Syringa is an important aromatic woody angiosperm that is widely planted in gardens. Its dry flowers are traditionally used to manufacture infusions and spices in China. In this study, the floral volatiles emitted from nine different Syringa species and varieties, viz. S. chinensis, S. protolaciniata, S. oblata, S. oblata var. giraldii, S. oblata var. plena, S. vulgaris ＇Mrs Harry Bickle＇, S. vulgaris ＇Bright Centennial＇, S. vulgaris ＇White Spires＇, and S. vulgaris ＇President Lincoln＇ were collected by the dynamic headspace technique, and then identified by automated thermal desorption-gas chromatography/mass spectrometry. There were significant differences in components and corresponding contents of floral scent emitted from the nine Syringa species and varieties. Among the detected components, β-ocimene exhibited the highest content, accounting for more than 70 % of the floral scent of S. protolaciniata, S. oblata var. giraldii, and S. vulgaris ＇Bright Centennial＇. A significant daytime variation of floral scent emitted from S. pekinensis was recorded, especially for benzaldehyde, whose content first increased and then decreased. We studied the scent emitted from the in vitro flowers of S. vulgaris ＇Pres Lincoln＇ during the process of natural drying. Alcohol compounds were released in the greatest content, and the content of 2-ethyl-l-hexanol accounted for about 40 % of the total release amount. The results described the emission pattern and mechanisms of floral scent in Syringa.
