Date of Award:

5-1972

Document Type:

Dissertation

Degree Name:

Doctor of Philosophy (PhD)

Department:

Biology

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

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Botany Commons

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