Influence of environmental factors on the ultradian rhythm of shoot movement inPhaseolus vulgarisL
| Autor: | Bernard Millet, R. Degli Agosti |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
photoperiodism
Measurement method biology Period (gene) Temperature Plant Environment biology.organism_classification Shoot Botany ddc:550 Biophysics Photoperiodism General Earth and Planetary Sciences Light beam Relative humidity Phaseolus General Agricultural and Biological Sciences General Environmental Science Ultradian rhythm |
| Zdroj: | Journal of Interdisiplinary Cycle Research, Vol. 22, No 4 (1991) pp. 325-332 |
| ISSN: | 0022-1945 |
| DOI: | 10.1080/09291019109360117 |
| Popis: | 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 independent of short term (within 1 day) light conditions (presence or absence) and variations of relative humidity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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