ISHS Acta Horticulturae 751: IV International Symposium on Rose Research and Cultivation
VOLATILE COMPONENTS IN CHINESE ROSES |
| Authors: | Y. Ueda, N. Wang, H. Sasaki, N. Watanabe, K. Yomogida |
| Keywords: | Rosa chinensis, Rosa gigantea, tea rose, 1,3-dimethoxy-5-methylbenzene, 1,3,5-trimethoxybenzene, dihydro-β-ionone, gene resources |
| Abstract:
One hundred fifty four taxa of roses including Chinese wild species, Tea rose, China rose and Chinese related roses were used to analyze volatile components of petals. 1,3,5-trimethoxybenzene(TMB) originated from Rosa chinensis Jacq. var. spontanea (Rehd. et Wils.) Yu et Ku and 1,3-dimethoxy-5-methylbenzene(DMMB) originated from R. gigantea Collett. These two key components of Chinese roses, were detected in floral petals from most of taxa tested. In addition, a favorable volatile compound, dihydro-β-ionone, was highly detected in R. chinensis var. semperflorens (Curtis) Koehne and several cultivars such as ‘N-1-3’ and ‘N-1-8’. One Chinese cultivar, ‘Chi Dan Hong Xin’ also emitted β-ionone as the major scent compound (21.6%). These cultivars are considered as valuable gene resources for breeding fragrant roses. The intracellular contents of TMB and DMMB and their precursors in leaves and petals were further investigated, and the relationship between volatile components and precursors in the biosynthetic pathway of these components is discussed. | |
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