文献类型：期刊文献

英文题名：Composition analysis of floral scent within genus Camellia uncovers substantial interspecific variations

作者：Fan, Zhengqi[1,2] Li, Jiyuan[1,2] Li, Xinlei[1,2] Yin, Hengfu[1,2]

第一作者：范正琪

通信作者：Yin, HF[1];Yin, HF[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, State Key Lab Tree Genet & Breeding, Hangzhou 311400, Zhejiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Key Lab Forest Genet & Breeding, Hangzhou 311400, Zhejiang, Peoples R China

年份：2019

卷号：250

起止页码：207-213

外文期刊名：SCIENTIA HORTICULTURAE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000463128200025)】；

基金：We thank two anonymous reviewers for critical comments on earlier version of this manuscript. This work was supported by Nonprofit Research Projects (CAFYBB2017SZ001) of Chinese Academy of Forestry, National Science Foundation of China (31870578), and Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding (2016CO2056-12). We also acknowledge the supports from International Sci. & Tech. Cooperation Program of China (2016YFE0126100). We thank Prof. Ning Ye from Nanjing Forestry University for the help of computational analysis.

语种：英文

外文关键词：Floral scent; Volatiles; Camellia; Theopsis; HS-SPME-GC-MS

摘要：The great diversity and complexity of floral scent originate from specialized metabolic pathways partly due to the ever-evolving plant and pollinator interaction. However, the diversity of floral scent compositions in plant species remains to be elucidated. Genus Camellia contains a large number of species including several famous ornamental species, and species within the section Theopsis possess distinctive floral scent traits. In this study, we have collected 22 species from Theopsis and performed headspace-solid phase microextration coupled with gas chromatography mass spectrum (HS-SPME-GC-MS) analysis to investigate the scent compositions. In total, we identified 223 volatile compounds belonging to benzenoids, phenyl propanoids, terpenes, and other components. Remarkable interspecific variations in composition and quantity were revealed. We characterized the relationships of different types of volatile compounds by hierarchical clustering and principal component analysis, and showed that small amount of chemicals could affect the scent effects significantly. Moreover, we compared the volatile emission patterns between different floral organ types and developmental stages in Camellia boxifolia. We revealed that stamens emitted more volatiles than petals, and the emission reached the maximum at the stage of flower half opening. This work provides fundamental information for breeding Camellia cultivars with scent traits.