title: Plant Morphology: Its Control in Proserpinaca by Photoperiod, Temperature, and Gibberellic Acid.
abstract: Growth forms controlled by the photoperiod are modified by temperature and gibberellic acid. Gibberellic acid changes leaf orientation and prostrate growth habit of the short-day plant to that typical of the long-day plant and modifies leaf shape in both types of plants. Low temperature resembles short days in its effect on leaf shape and stem orientation of long-day plants. Geotropic responses of the stem appear to be modified by photoperiod, temperature, and gibberellic acid.
authors.forename: A
authors.initials: A
authors.lastname: Wallenstein
authors.forename: L S
authors.initials: LS
authors.lastname: Albert