title: Temperature-induced alterations of in vivo chlorophyll a fluorescence induction in cucumber as affected by DCMU.
abstract: Induction of chlorophyll a fluorescence and photosynthesis as affected by temperature were measured in cucumber leaf discs. Abrupt changes of the maximal variable fluorescence, Fv(p), and photosynthesis were observed around 9° and 21°C when the temperature was decreased from 30° to 0°C. The temperature-dependent maximal fluorescence of DCMU-treated leaf discs showed a single change around 21°C. Temperature-induced chlorophyll a fluorescence alterations are discussed in relation to electron transport activity of the two photosystems and photosynthetic activity of the cucumber leaf discs.
authors.affiliation: Department of Plant Physiology, University of Groningen, P.O. Box 14, 9750 AA, Haren, The Netherlands.
authors.forename: L H
authors.initials: LH
authors.lastname: Janssen
authors.forename: P R
authors.initials: PR
authors.lastname: Van Hasselt