Influence of environmental factors on the ultradian rhythm of shoot movement in Phaseolus vulgaris L

Degli Agosti, Robert; Millet, Bernard

doi:10.1080/09291019109360117

Scientific article

English

Influence of environmental factors on the ultradian rhythm of shoot movement in Phaseolus vulgaris L

ContributorsDegli Agosti, Robert; Millet, Bernard

Published inJournal of interdisciplinary cycle research, vol. 22, no. 4, p. 325-332

Publication date1991

Abstract

A very simple and inexpensive device is described allowing continuous, environment independent measurement of the ultradian rhythm period of shoot movement. The ultradian rhythm is monitored by the interruption of a 940 nm light emitting diode generated light beam and a phototransistor. The results show that the period is constant under stable conditions, but is strongly dependent on temperature. Conversely, it is in dependent of short term (within 1 day) light conditions (presence or absence) and variations of relative humidity.

Keywords

Plant
Photoperiodism
Temperature
Environment

Affiliation entities

Faculté des sciences / Section des sciences de la Terre et de l'Environnement / Département F.-A. Forel des sciences de l'environnement et de l'eau

Citation (ISO format)

DEGLI AGOSTI, Robert, MILLET, Bernard. Influence of environmental factors on the ultradian rhythm of shoot movement in Phaseolus vulgaris L. In: Journal of interdisciplinary cycle research, 1991, vol. 22, n° 4, p. 325–332. doi: 10.1080/09291019109360117

Article (Published version)

Identifiers

PID : unige:42811
DOI : 10.1080/09291019109360117

Journal ISSN0022-1945

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Influence of environmental factors on the ultradian rhythm of shoot movement in Phaseolus vulgaris L

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