title: Circadian periodic response of Phaseolus vulgaris l. to 2,4-dichlorophenoxyacetic acid.
abstract: The susceptibility of bean plants, Phaseolus vulgaris L., cv. Executive, to 2,4-dichlorophentoxyacetic acid (2,4-D) appeared to depend upon the time of application. Oscillations in response to 2,4-D were evident in plants subjected to conditions of alternating light and dark spans, continuous illumination or darkness. The fresh and dry weight of plant material was generally less when 2,4-D was applied to plants near the later portions of the light span.
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000494:pharmacology*; D002940:Circadian Rhythm; D008029:Lighting; D019684:Magnoliopsida / Q000187:drug effects* / Q000254:growth & development
chemical_list: D015084:2,4-Dichlorophenoxyacetic Acid