| Title: | Emission of floral volatiles from Mahonia japonica (Berberidaceae) |
| Author(s): | Picone JM; MacTavish HS; Clery RA; |
| Address: | "Department of Agricultural Sciences, Imperial College, University of London, Wye, Ashford, Kent TN25 5AH, UK" |
| DOI: | 10.1016/s0031-9422(02)00119-x |
| ISSN/ISBN: | 0031-9422 (Print) 0031-9422 (Linking) |
| Abstract: | "Flowering Mahonia japonica plants were subjected to controlled environments and the floral volatiles emitted from whole racemes (laterals) were trapped by Porapak Q adsorbent and analysed by GC-FID. An experiment with photoperiods of 6 and 9 h at constant temperature (10+/-1 degrees C) demonstrated that photoperiod was the stimulus for enhanced emission of most volatiles. Small quantitative differences in emitted fragrance composition were observed between light and dark periods and between plants acclimatised to different photoperiods. Maximum rates of emission occurred in the middle of the light period; aromatic compounds (benzaldehyde, benzyl alcohol and indole) displayed a more rapid increase and subsequent decline compared with monoterpenes (cis- and trans-ocimene and linalool). When the photoperiod was extended from 6 to 9 h, maximum rates of emission continued throughout the additional 3 h. Total emission (microg/h) of volatiles was 2-fold greater in the day-time (DT) (39.7 microg/h) compared with the night-time (NT) (19.8 microgg/h) under a 6 h photoperiod and was not significantly different from total emission under a 9 h photoperiod" |
| Keywords: | Benzaldehydes/*analysis Benzyl Alcohol/*analysis Berberidaceae/*chemistry/physiology Circadian Rhythm/physiology Gas Chromatography-Mass Spectrometry Indoles/*analysis Photoperiod Temperature Time Factors Volatilization; |
| Notes: | "MedlinePicone, Joanne M MacTavish, Hazel S Clery, Robin A eng England 2002/07/20 Phytochemistry. 2002 Jul; 60(6):611-7. doi: 10.1016/s0031-9422(02)00119-x" |
