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Verouderingsverval van plantweefsels

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dc.contributor.author De Swardt, G. H.
dc.date.accessioned 2009-05-07T07:12:17Z
dc.date.available 2009-05-07T07:12:17Z
dc.date.issued 2009-05-07T07:12:17Z
dc.identifier.uri http://hdl.handle.net/10210/2487
dc.description Inaugural lecture--Faculty of Botany, Rand Afrikaans University, 7 August 1974 en
dc.description.abstract Senescence of plant tissues, or phytogerontology, is the decline in, and eventual cessation of, the functional abilities shown by mature cells, tissues, organs or organisms. It is a complex process and several hypotheses have been proposed which, however, only consider some aspects of senescence. The hypotheses may be grouped in the following categories: I. Hypotheses which emphasize endogenous factors such as progressive and irreversible changes in chemical and cellular constituents. 2. Hypotheses based on exogenous factors including temperature, water and light. 3. Hypotheses involving genetic factors. A specialised form of senescence includes the ripening of fruits and vegetables, as well as the decline of cut flowers after picking. This is associated with changes in subcellular morphology and biochemistry which can be accelerated or retarded by environmental conditions such as available nutrients, water, temperature or light. Increasing knowledge about senescence will eventually lead to the development of effective preservatives, the importance of which cannot be over-emphasized. The specific stimulus which initiates the process of deterioration is still unknown and intensive research on this aspect is absolutely necessary. en
dc.language.iso afr en
dc.rights University of Johannesburg en
dc.subject Plant tissues - Senescence en
dc.subject Phytogerontology en
dc.title Verouderingsverval van plantweefsels en
dc.title.alternative Senescence of plant tissues en
dc.type Inaugural en

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