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Namaqualand ephemerals : phenology and thermal units
Dissertation (MSc (Botany))--University of Pretoria, 1993.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2022
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| _version_ | 1867613568168361984 |
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| access_status_str | Open Access |
| author2 | Van Rooyen, Noel, 1950- |
| author_browse | Van Rooyen, Noel, 1950- |
| author_facet | Van Rooyen, Noel, 1950- |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Botany))--University of Pretoria, 1993. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/85424 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:12.930Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/85424 Namaqualand ephemerals : phenology and thermal units Van Rooyen, Noel, 1950- Van Rooyen, M.W. (Margaretha W.), 1950- Theron, G.K. Steyn, Hester Maria UCTD Namaqualand ephemerals phenology thermal units Dissertation (MSc (Botany))--University of Pretoria, 1993. The effect of different variables i.e. temperature, sowing date, water stress and achene age, on the phenology and the prediction of phenological stages of five Namaqualand ephemeral plant species were investigated. The species examined were Dimorphotheca sinuata, Foveolina albida, Heliophila seselifolia, Senecio arenarius and Ursinia caldlefolia. Later sowing dates and water stress resulted in smaller plants with relatively few open inflorescences at peak flowering and therefore a less spectacular flowering display. There were some differences in the phenology of plants derived from achenes collected at different times. The use of thermal units resulted in fairly accurate predictions of the timing of phenological stages such as peak flowering or even a spectacular flowering display for tourists. While cold units should be used until flower/inflorescence initiation, the combined use of cold and heat units are recommended in the prediction of later phenological stages. Plant Science MSc (Botany) Unrestricted 2022-05-17T11:21:09Z 2022-05-17T11:21:09Z 2021/11/10 1993 Dissertation * https://repository.up.ac.za/handle/2263/85424 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Namaqualand ephemerals phenology thermal units Namaqualand ephemerals : phenology and thermal units |
| title | Namaqualand ephemerals : phenology and thermal units |
| title_full | Namaqualand ephemerals : phenology and thermal units |
| title_fullStr | Namaqualand ephemerals : phenology and thermal units |
| title_full_unstemmed | Namaqualand ephemerals : phenology and thermal units |
| title_short | Namaqualand ephemerals : phenology and thermal units |
| title_sort | namaqualand ephemerals phenology and thermal units |
| topic | UCTD Namaqualand ephemerals phenology thermal units |
| url | https://repository.up.ac.za/handle/2263/85424 |