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The sensitivity of South African plants to acute dosages of sulpher dioxide
Relative susceptibility to SOâ‚‚ has been determined for a range of South African plants. Young trees, shrubs and herbaceous species were used for experiments in which the phytotoxic effects of SOâ‚‚ were studied at different concentrations and exposure times. The plants were fumigated in an ex...
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| Format: | Thesis |
| Language: | English |
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Department of Environmental and Geographical Science
2015
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| _version_ | 1867614342274351104 |
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| access_status_str | Open Access |
| author | Ashton, Elizabeth-Rose |
| author2 | Fuggle, Richard Francis |
| author_browse | Ashton, Elizabeth-Rose Fuggle, Richard Francis |
| author_facet | Fuggle, Richard Francis Ashton, Elizabeth-Rose |
| author_sort | Ashton, Elizabeth-Rose |
| collection | Thesis |
| description | Relative susceptibility to SOâ‚‚ has been determined for a range of South African plants. Young trees, shrubs and herbaceous species were used for experiments in which the phytotoxic effects of SOâ‚‚ were studied at different concentrations and exposure times. The plants were fumigated in an exposure chamber at ambient conditions of temperature, light intensity and relative humidity. Considerable variations in sensitivity were noted for the 63 species investigated, and, among the families well represented in the South African flora, Ericaceae were resistant while Proteaceae were sensitive to SOâ‚‚. The injury symptoms developed have been described and foliar necrosis evaluated in terms of an injury index. The results of this study form the first documented account of the susceptibility of South African plants to SOâ‚‚, and include a pictorial record of acute injury symptoms. A literature survey of current knowledge concerning visible and subtle phytotoxic effects of SOâ‚‚ is also presented. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/14295 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:50:31.179Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Environmental and Geographical Science |
| publisherStr | Department of Environmental and Geographical Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/14295 The sensitivity of South African plants to acute dosages of sulpher dioxide Ashton, Elizabeth-Rose Fuggle, Richard Francis Environmental Studies Relative susceptibility to SOâ‚‚ has been determined for a range of South African plants. Young trees, shrubs and herbaceous species were used for experiments in which the phytotoxic effects of SOâ‚‚ were studied at different concentrations and exposure times. The plants were fumigated in an exposure chamber at ambient conditions of temperature, light intensity and relative humidity. Considerable variations in sensitivity were noted for the 63 species investigated, and, among the families well represented in the South African flora, Ericaceae were resistant while Proteaceae were sensitive to SOâ‚‚. The injury symptoms developed have been described and foliar necrosis evaluated in terms of an injury index. The results of this study form the first documented account of the susceptibility of South African plants to SOâ‚‚, and include a pictorial record of acute injury symptoms. A literature survey of current knowledge concerning visible and subtle phytotoxic effects of SOâ‚‚ is also presented. 2015-10-25T16:59:46Z 2015-10-25T16:59:46Z 1977 Master Thesis Masters Msc http://hdl.handle.net/11427/14295 eng application/pdf Department of Environmental and Geographical Science Faculty of Science University of Cape Town |
| spellingShingle | Environmental Studies Ashton, Elizabeth-Rose The sensitivity of South African plants to acute dosages of sulpher dioxide |
| thesis_degree_str | Master's |
| title | The sensitivity of South African plants to acute dosages of sulpher dioxide |
| title_full | The sensitivity of South African plants to acute dosages of sulpher dioxide |
| title_fullStr | The sensitivity of South African plants to acute dosages of sulpher dioxide |
| title_full_unstemmed | The sensitivity of South African plants to acute dosages of sulpher dioxide |
| title_short | The sensitivity of South African plants to acute dosages of sulpher dioxide |
| title_sort | sensitivity of south african plants to acute dosages of sulpher dioxide |
| topic | Environmental Studies |
| url | http://hdl.handle.net/11427/14295 |
| work_keys_str_mv | AT ashtonelizabethrose thesensitivityofsouthafricanplantstoacutedosagesofsulpherdioxide AT ashtonelizabethrose sensitivityofsouthafricanplantstoacutedosagesofsulpherdioxide |