Date of Award:
5-1972
Document Type:
Dissertation
Degree Name:
Doctor of Philosophy (PhD)
Department:
Plants, Soils, and Climate
Department name when degree awarded
Botany
Committee Chair(s)
Frank B. Salisbury
Committee
Frank B. Salisbury
Committee
William F. Campbell
Committee
Herman H. Wiebe
Committee
John O. Evans
Committee
David R. Walker
Abstract
New techniques in extraction and assay of florigenic substances were tested. Initial response to the buffer-PVP extracts proved promising, but after several successful experiments, results could not be duplicated. Possible reasons for the failure are discussed.
A long-day inhibitory effect, demonstrated earlier by Gibby and Salisbury (25), was further investigated. Experiments with 14C-labled assimilates disproved the hypothesis that the inhibition is a result of assimilate translocation. Other experiments pointed to the probability of phytochrome involvement as well as protein synthesis as part of the inhibitory process. The nature of inhibition was ascribed to a localized inhibitory condition, probably a relatively immobile substance.
Checksum
d82cad05e9e1d52ded4f90b892429d95
Recommended Citation
Gibby, David D., "Xanthium strumarium L.: Extraction and Assay of Floral Promotive Principles and Additional Investigations into Inhibition of Flowering" (1972). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 8291.
https://digitalcommons.usu.edu/etd/8291
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