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Scientific article
Open access
French

Analyse des données de phénomènes rythmiques: le mouvement foliaire du haricot

Published inSaussurea, vol. 12, p. 1-14
Publication date1981
Abstract

Analysis of data from periodical signals: the movement of the beans leaf.- A set of numerical programs to analyze data from periodical signals from bean's leaf is proposed. The methods used are: polynomial trend analysis, periodogram, variance spectrum, power spectrum, cosinusoïdal regression with m-components, cosinor and complex demodulation. They are illustrated using data collected from experiments proceeded from the circadian movement of the beans leaf. The rotation of the leaf is measured with a lever. The installation allows to estimate angles with an absolute precision value of 0.5°; moreover, the rhythm could be monitored continuously in any kind of photo- or thermoperiodic treatment. In constant conditions (22.5°, 4500 lux) the periodicity of the movement is 26.4 hours.

Keywords
  • Circadian rhythm
  • Leaf movement
  • Phaseolus
  • Data analysis
  • Programming
Citation (ISO format)
DEGLI AGOSTI, Robert et al. Analyse des données de phénomènes rythmiques: le mouvement foliaire du haricot. In: Saussurea, 1981, vol. 12, p. 1–14.
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Article (Published version)
accessLevelPublic
Identifiers
  • PID : unige:42868
ISSN of the journal0373-2525
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