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Spatial and temporal dynamics of carnation-scented flowers in Lagerstroemia 'Ning Xiang 3′

文献类型： 外文期刊

作者： Zhou, Ting 1 ; Han, Wei 2 ; Ning, Kun 3 ; Zhou, Yanwei 1 ; Zhang, Donglin 4 ; El-Kassaby, Yousry A. 5 ; Xinran, Chong 1 ; Zhang, Fan 1 ; Chen, Fangyu 1 ; Chen, Hong 1 ;

作者机构： 1.Inst Bot, Jiangsu Prov & Chinese Acad Sci Nanjing Bot Garden, Jiangsu Key Lab Res & Utilizat Plant Resources, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Dept Cent Lab, Nanjing 210014, Peoples R China

3.Jinling Inst Technol, Coll Hort, Nanjing 210038, Jiangsu, Peoples R China

4.Univ Georgia, Dept Hort, Athens, GA 30602 USA

5.Univ British Columbia, Dept Forest & Conservat Sci, Vancouver, BC, Canada

关键词： Floral scent; Release dynamics; Characteristic compounds; HS-SPME-GC-MS; Targeted breeding; Fragrance industry

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.9； 五年影响因子：6.0 ）

ISSN： 0926-6690

年卷期： 2024 年 208 卷

页码：

收录情况： SCI

摘要： Floral scent is an essential attribute for plant reproduction and ornamental plant industry. In Lagerstroemia genus, taxa with distinct fragrances are rare, thus limiting their economic value. Using headspace solid-phase micro-extraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS) (HS-SPME-GC-MS), floral scent components of L. 'Ning Xiang 3 ' (a fragrant cultivar blooming with pinkish-white petals) in different flowering periods, floral organs, and day-night times were measured. Overall, 67 volatiles were putatively detected at five flowering periods and the primary compound type was benzenoids/phenylpropanoids (P2: 50.75%; P3: 47.33%). Eugenol (clove odor) and geraniol (rose odor) were considered as the most characteristic scent compounds, leading to the carnation-scented attribute of L. 'Ning Xiang 3 ' flowers. Based on floral organ's specific analysis, we found that the composition of the whole flowers most resembled that of petals (Bray-Curtis dissimilarity index 0.48), indicating that the petals contributed conclusively to the floral scent. Additionally, the scent release dynamics observed in day-night times showed consistent variation (increasing first and then decreasing) with that in different flowering periods, suggesting that the early-blooming period (cool morning at 6:00-7:00 am) represents the peak period for L. 'Ning Xiang 3 ' floral fragrance production. The present study is expected to provide a theoretical and material foundation for the targeted breeding of Lagerstroemia fragrant germplasm, and promote the development of Lagerstroemia fragrance industry.

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