Photoperiodism: An Effect of Darkness during the Light Period on Critical Night Length

The critical night length of the short-day plant Lemna perpusilla, grown with sucrose, increases roughly 3 hours under cycles with "light periods" composed of darkness preceded and ended by brief exposures to light. Although plants so grown are white, the effect is due neither to the absen...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 1963-06, Vol.140 (3574), p.1397-1398
1. Verfasser:	Hillman, William S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Flowering Photoperiodism Photophase Photosynthesis Plants
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description	The critical night length of the short-day plant Lemna perpusilla, grown with sucrose, increases roughly 3 hours under cycles with "light periods" composed of darkness preceded and ended by brief exposures to light. Although plants so grown are white, the effect is due neither to the absence of photosynthesis nor to insufficient total energy. It is inconsistent with current ideas on photoperiodic timing but may be explained by a hypothesis based on reported properties of phytochrome.
doi_str_mv	10.1126/science.140.3574.1397
format	Article
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source	JSTOR Archive Collection A-Z Listing; American Association for the Advancement of Science
subjects	Flowering Photoperiodism Photophase Photosynthesis Plants
title	Photoperiodism: An Effect of Darkness during the Light Period on Critical Night Length
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