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Verbreitung von Samen und Früchten - Selbstverbreitung durch hygroskopische Mechanismen   [Original Title]

Dispersal of Seeds and Fruits - Self-Propagation by Hygroscopical Mechanisms   [Title Translation]
Country of Origin: Germany
Year of origin: 1958-1960
Genre: Documentary Film
Locations of shooting: n/a

Credits
Production company: Universität Kiel, Botanisches Institut (Kiel)
  IWF (Göttingen)
First released by: IWF (Göttingen)
Distributor: IWF (Göttingen)
Author: Fritz Overbeck
  Berthold Schwemmle
  Bruno Wolters


Keywords: Avena, Bewegung, Erodium cicutarium, Geranium sanguineum, Hafer, hygroskopische, hygroskopische Bewegung, Reiherschnabel, Samenverbreitung, Stiefmütterchen, Storchschnabel, Viola tricolor, Crane's-bill, Herons-bill, hygroscopic, hygroscopic movement, movement, Oat, seed dispersal, Wild Pansy
Hygroscopic mechanisms are often the cause of autochorous propagation of seeds and fruits. Swelling forces in superimposed layers with differing longitudinal and latitudinal structure produce different movements: catapulting lever in Geranium sanguineum: squeezing catapult in Viola tricolor; creeping and drilling movements in Avena sterilis and Erodium cicutarium.

Version 1
Language: deu, eng
Sound: Sound film
Aspect: n/a
Duration: 9 1/2 min

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Version 2
Language: deu, eng
Sound: Sound film
Aspect: n/a
Duration: 9 1/2 min

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Version 3
Language: deu, eng
Sound: Sound film
Aspect: n/a
Duration: 9 1/2 min

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Length 100 m Request Copy Button
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Copyright Information IWF Institut Wissen und Medien gGmbH
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