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n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika
Dissertation (MSc)--University of Pretoria, 1982.
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| Format: | Thesis |
| Language: | Afrikaans |
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University of Pretoria
2022
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| _version_ | 1867613482092855296 |
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| access_status_str | Open Access |
| author2 | Robbertse, P.J. (Petrus Johannes), 1932- |
| author_browse | Robbertse, P.J. (Petrus Johannes), 1932- |
| author_facet | Robbertse, P.J. (Petrus Johannes), 1932- |
| 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)--University of Pretoria, 1982. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/85434 |
| institution | University of Pretoria (South Africa) |
| language | Afrikaans |
| last_indexed | 2026-06-10T12:36:50.758Z |
| 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:2263/85434 n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika Robbertse, P.J. (Petrus Johannes), 1932- Kok, P.D.F. Swartz, Pauline Priscilla UCTD Numeries-taksomiese Takson acacia Karoo Hayne Suidelike Afrika Dissertation (MSc)--University of Pretoria, 1982. In a historical revue of the nomenclature of A. karroo it is clear that different authors have already been aware of the fact that several variating forms do exist in the taxon A. karroo. They even described some of the variations as new species! A single population of A. karroo has been studied beforehand in order to obtain a proper set and quantity of characteristics for numeric taxonomic analysing purposes. 1 Altogether 38 characteristics have been carefully selected beforehand in order to use in the analysis of the variations of A. karroo. Different populations of the geographical distribution area of A. karroo in southern Africa were thoroughly studied and analysed by means of computerized numerical taxonomic methods. Environmental characteristics of the different populations were also quoted. The anatomy of the pinnule have also been studied. According to the results it seems that six well defined infraspecific groups are distinguishable. The seedlings of these six groups were cultivated under similar environmental conditions and show the same range of phenetic variation as the six above mentioned groups. It proves that these infraspecific groups' characteristics have already been genetically fixed. Though there are even further subvariations in some of the six infraspecific variating forms, the six variations can still be distinguished from one another: They are well defined groups with a taxonomic rank of at least that of subspecies. These different infraspecific groups of A. karroo as well as two interspecific hybrid forms are described in detail. Their geographical distribution in southern Africa as well as certain ecological characteristics are also provided in this thesis. Probable new name combinations for new subspecies are suggested in case these six infraspecific groups might in future be regarded as subspecies. A key to distinguish between the different groups are also provided. Plant Science MSc Unrestricted 2022-05-17T11:21:15Z 2022-05-17T11:21:15Z 18/8/2021 1982 Dissertation * https://repository.up.ac.za/handle/2263/85434 af © 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 Numeries-taksomiese Takson acacia Karoo Hayne Suidelike Afrika n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title | n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title_full | n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title_fullStr | n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title_full_unstemmed | n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title_short | n Numeries-taksomiese evaluering van die takson acacia karoo hayne in Suidelike Afrika |
| title_sort | n numeries taksomiese evaluering van die takson acacia karoo hayne in suidelike afrika |
| topic | UCTD Numeries-taksomiese Takson acacia Karoo Hayne Suidelike Afrika |
| url | https://repository.up.ac.za/handle/2263/85434 |