Document Type

Thesis - Open Access

Award Date

1963

Degree Name

Doctor of Philosophy (PhD)

Department

Botany

Abstract

Raphanus sativus L., the radish, as other Cruciferae, has a high tolerance to ionizing radiation. The assumption was made that ascorbic acid levels in the growing plant may in part determine the plant’s radiosensitivity. The first objective of this investigation were to determine the effects of ionizing radiation on the radish plant in comparison to other plants and the levels of irradiation at which these effects were manifest. The second objective is to determine the possible relationships between ascorbic acid levels in the radish plant, and the expression of growth based on tissue dry weight, by comparison of non-irradiated and irradiated plants. The final objective is to determine the correlation between the effects of gamma-irradiation on ascorbic acid in vivo and in vitro. Ascorbic acid content in radish plant appears to be one criterion for the regulation of growth and development. Abnormalities are developmental expressions in plants brought about by exposure to unusual environmental conditions. Gamma-irradiation is just one such condition under which the radish plant was exposed. It is responded by unusual fluctuations in ascorbic acid levels and by deviations from normal growth and development.

Library of Congress Subject Headings

Radishes
Irradiation
Vitamin C
Growth (Plants)

Description

Includes bibliographical references

Format

application/pdf

Number of Pages

124

Publisher

South Dakota State University

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