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PHOTOMORPHOGENETIC REACTIONS and THEIR RELATION TO TIME*
Author(s) -
Verbelen JeanPierre,
Spruyt Eric,
Moereels Edith,
Greef Jan A. de
Publication year - 1982
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1982.tb03841.x
Subject(s) - etiolation , phaseolus , pulse (music) , botany , chemistry , biology , optics , physics , biochemistry , detector , enzyme
— Hook‐opening and leaf expansion were selected as a measure of the photoactivity of etiolated Phaseolus vulgaris L. seedlings. The experimental procedure consisted of a standard red illumination, followed by a 24‐h reaction period. The magnitude of both morphogenic responses was dependent upon the time of day when the light pulse was given. The photoactivity of the etiolated seedlings changed rhythmically with a periodicity of about 6 h.