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  • 1985-1989  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Circadian rhythmicity of fragrance emission in flowers of Hoya carnosa R. Br. (1988)
    Springer
    Planta 174 (1988), S. 248-252 
    Details
    ISSN: 1432-2048
    Keywords: Circadian rhythmicity ; Flower fragrance ; Hoya ; Volatiles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In flowers of Hoya carnosa R. Br. the nocturnal emission of fragrance occurs according to an endogenous circadian rhythmicity. This was demonstrated by the continuation of rhythmical emission for two to three cycles under conditions of permanent illumination. The free-running period was approx. 29 h under these conditions. The inversion of light/dark cycles caused the entrainment of the next peak of emission by approx. 12 h whether the inversion was started with a light period or a with dark period prolonged for 12 h. When only the flower used for fragrance analysis was subjected to an inverted photoperiod, the rest of the plant remaining under the original light/dark cycle, the synchronization of fragrance emission occurred according to the Zeitgeber perceived by the individual flower.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394778
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rhythms of fragrance emission in flowers (1988)
    Springer
    Planta 174 (1988), S. 242-247 
    Details
    ISSN: 1432-2048
    Keywords: Flower fragrance ; Fragrance emission ; Diurnal rhythmicity (fragrance) ; Rhythmicity (flower fragrance)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A method for the sampling of volatiles emitted by individual flowers is described. Sampling over periods of 3 h allowed the examination of diurnal changes in quantity and quality of fragrance. In the species studied, Odontoglossum constrictum Lindl., Citrus medica L., Hoya carnosa R. Br., and Stephanotis floribunda Brongs., the fragrance was characterized by a few major components accompanied by a larger number of minor components. Flowers of all species produced volatiles in a rhythmical, diurnal fashion. Whereas in detached flowers of O. constrictum and C. medica rhythmicity could be observed for up to four cycles, flowers of H. carnosa showed this phenomenon only when attached to the plant. Maxima of emission were observed during the day in C. medica and O. constrictum whereas in H. carnosa it occurred during the night. In S. floribunda a conspicuous asynchronism of the emission of different volatiles was observed, resulting in the rhythmical change of fragrance quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394777
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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