Discrimination of Floral Scents in Chrysanthemum morifolium Cultivars using Electronic Nose

다국어 초록 (Multilingual Abstract)

The aim of the present study was to investigate the differences in volatile profiles among different Korean chrysanthemum cultivars grown as cut flowers. To optimize a method for sampling and comparing scents, the scents were evaluated by electronic nose (E-nose) at different flowering stages and in different organs and cultivars. The values of maximum resistance changes of metal oxide semiconductor sensors and relative aroma intensity were highest at flowering stage III (full flower stage of ray florets and initial opening disc florets) among different stages and in disc florets among different floral organs of cut chrysanthemums. Among the 12 chrysanthemum cultivars, the highest values for response change and relative aroma intensity were observed in the flowers of the ‘Ilweol’ cultivar. To compare scent patterns among the cultivars, E-nose sensor data was subjected to multivariate statistical analysis. Principal component analysis and discriminant function analysis of the volatile metabolic profile data indicated that chrysanthemum samples were clearly discriminated in a cultivar-dependent manner. These results show that different cultivars are characterized by distinct volatile profiles. Hierarchical cluster analysis showed that the 12 chrysanthemum cultivars were separated into 3 main groups according to the relationship of volatile profiles; however, chrysanthemum cultivars were not clustered according to the flower shape. We propose that these results could be used as the basis on which to improve the breeding of cut chrysanthemums based on volatile characteristics.

목차 (Table of Contents)

• Abstract
• Introduction
• Materials and Methods
• Plant materials
• Sample preparation and extraction of volatiles
• E-nose analysis
• Data analysis
• Results and Discussion
• Comparison of floral scents pattern amongdifferent flowering stages
• Comparison of floral scents pattern amongdifferent floral organs
• Discrimination of the floral scents among thecut chrysanthemum cultivars
• Acknowledgements
• References