The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion
The genus Rubus L. is represented in southern Africa by the subgenera Eubatus Focke and Idaeobatus Focke. A combination o f morphological data, data on the reproductive systems of some collections and meiotic chromosome behaviour indicates that a hybrid swarm in the eastern Transvaal was formed s...
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| Format: | Article |
| Language: | English |
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South African National Biodiversity Institut
1987-10-01
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| Series: | Bothalia: African Biodiversity & Conservation |
| Subjects: | |
| Online Access: | https://abcjournal.org/index.php/abc/article/view/1020 |
| _version_ | 1828864454445498368 |
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| author | J. J. Spies C. H. Stirton H. du Plessis |
| author_facet | J. J. Spies C. H. Stirton H. du Plessis |
| author_sort | J. J. Spies |
| collection | DOAJ |
| description | The genus Rubus L. is represented in southern Africa by the subgenera Eubatus Focke and Idaeobatus Focke. A combination o f morphological data, data on the reproductive systems of some collections and meiotic chromosome behaviour indicates that a hybrid swarm in the eastern Transvaal was formed subsequent to the hybridization between R. cuneifolius Pursh. taxon B (subgenus Eubatus) and R. longepedicellatus (C. E. Gust.) C. H. Stirton (subgenus Idaeobatus). Other examples of intra- and intersubgeneric hybridization were found during this study of the South African material. These instances, with examples found in the literature, indicate that the subgeneric subdivisions of Rubus are artificial.
Three different methods were used to analyse the meiotic chromosome configurations. The genome relationship system of Alonso & Kimber (1981) and Kimber & Alonso (1981) and the modification of the binomial system of Jackson & Casey (1980) by Spies (1984) proved to be the most sensitive for distinguishing between alio-, segmental alio- and autoploids. |
| first_indexed | 2024-12-13T04:07:06Z |
| format | Article |
| id | doaj.art-137f2087cbec46a39c2de48f8abce623 |
| institution | Directory Open Access Journal |
| issn | 0006-8241 2311-9284 |
| language | English |
| last_indexed | 2024-12-13T04:07:06Z |
| publishDate | 1987-10-01 |
| publisher | South African National Biodiversity Institut |
| record_format | Article |
| series | Bothalia: African Biodiversity & Conservation |
| spelling | doaj.art-137f2087cbec46a39c2de48f8abce6232022-12-22T00:00:10ZengSouth African National Biodiversity InstitutBothalia: African Biodiversity & Conservation0006-82412311-92841987-10-0117110511910.4102/abc.v17i1.1020949The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tionJ. J. Spies0C. H. Stirton1H. du Plessis2Botanical Research Institute, Department of Agriculture and Water SupplyThe Herbarium, Royal Botanical GardensBotanical Research Institute, Department of Agriculture and Water SupplyThe genus Rubus L. is represented in southern Africa by the subgenera Eubatus Focke and Idaeobatus Focke. A combination o f morphological data, data on the reproductive systems of some collections and meiotic chromosome behaviour indicates that a hybrid swarm in the eastern Transvaal was formed subsequent to the hybridization between R. cuneifolius Pursh. taxon B (subgenus Eubatus) and R. longepedicellatus (C. E. Gust.) C. H. Stirton (subgenus Idaeobatus). Other examples of intra- and intersubgeneric hybridization were found during this study of the South African material. These instances, with examples found in the literature, indicate that the subgeneric subdivisions of Rubus are artificial. Three different methods were used to analyse the meiotic chromosome configurations. The genome relationship system of Alonso & Kimber (1981) and Kimber & Alonso (1981) and the modification of the binomial system of Jackson & Casey (1980) by Spies (1984) proved to be the most sensitive for distinguishing between alio-, segmental alio- and autoploids.https://abcjournal.org/index.php/abc/article/view/1020chromosomeshybridizationpolyploidyreproduction. Rosaceae<i>Rubus</i>South Africaspeciation |
| spellingShingle | J. J. Spies C. H. Stirton H. du Plessis The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion Bothalia: African Biodiversity & Conservation chromosomes hybridization polyploidy reproduction. Rosaceae <i>Rubus</i> South Africa speciation |
| title | The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion |
| title_full | The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion |
| title_fullStr | The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion |
| title_full_unstemmed | The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion |
| title_short | The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion |
| title_sort | genus rubus rosaceae in south africa iv natural hybridiza tion |
| topic | chromosomes hybridization polyploidy reproduction. Rosaceae <i>Rubus</i> South Africa speciation |
| url | https://abcjournal.org/index.php/abc/article/view/1020 |
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