Can and do Ericas self pollinate?

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dc.contributor.advisorVan der Niet, Timotheusen_ZA
dc.contributor.advisorMidgley, Jeremy Jen_ZA
dc.contributor.authorArendse, Brittanyen_ZA
dc.date.accessioned2017-05-24T07:08:51Z
dc.date.available2017-05-24T07:08:51Z
dc.date.issued2011en_ZA
dc.description.abstractWithin the Cape Floristic Region many lineages are characterised by large floral diversity. The genus Erica is one of these lineages, making up -7% of the CFR. Surprisingly, even though pollinators have been suggested to be a driving force of floral morphology, the role of pollinators in the floral diversification and speciation of this genus is not yet well understood. Therefore the aim of this paper was to establish if Erica species can and do self-pollinate. Two Erica species, E. plukenetii and E. urnaviridis, were obtained from Kirstenbosch nursery, where hand-pollinations were performed on 15-20 flowers of each of three treatments (self-pollination, crosspollination and autogamous self-pollination. Additionally pollen tube analyses were performed on seven Erica species, which were collected from the Constantia Mountain. In E. plukenetii, self-incompatibility seems to be the predominant breeding system. It appears that, like E. urna-viridis, most of the other species analysed, via pollen tube analyses, have the potential to self-pollinate. However, more experiments are required to establish if these species are truly self-compatible. Autogamy, on the other hand, does not appear to set seed in the species studied. Therefore it would be fair to say that some ericas can self-pollinate but none actually do self-pollinate. These results indicate that ericas have a strong dependence on pollinators for seed set and in the past speciation may have occurred due to adaptation to different pollinators, when opllinators were scarce.en_ZA
dc.identifier.apacitationArendse, B. (2011). <i>Can and do Ericas self pollinate?</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/24396en_ZA
dc.identifier.chicagocitationArendse, Brittany. <i>"Can and do Ericas self pollinate?."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2011. http://hdl.handle.net/11427/24396en_ZA
dc.identifier.citationArendse, B. 2011. Can and do Ericas self pollinate?. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Arendse, Brittany AB - Within the Cape Floristic Region many lineages are characterised by large floral diversity. The genus Erica is one of these lineages, making up -7% of the CFR. Surprisingly, even though pollinators have been suggested to be a driving force of floral morphology, the role of pollinators in the floral diversification and speciation of this genus is not yet well understood. Therefore the aim of this paper was to establish if Erica species can and do self-pollinate. Two Erica species, E. plukenetii and E. urnaviridis, were obtained from Kirstenbosch nursery, where hand-pollinations were performed on 15-20 flowers of each of three treatments (self-pollination, crosspollination and autogamous self-pollination. Additionally pollen tube analyses were performed on seven Erica species, which were collected from the Constantia Mountain. In E. plukenetii, self-incompatibility seems to be the predominant breeding system. It appears that, like E. urna-viridis, most of the other species analysed, via pollen tube analyses, have the potential to self-pollinate. However, more experiments are required to establish if these species are truly self-compatible. Autogamy, on the other hand, does not appear to set seed in the species studied. Therefore it would be fair to say that some ericas can self-pollinate but none actually do self-pollinate. These results indicate that ericas have a strong dependence on pollinators for seed set and in the past speciation may have occurred due to adaptation to different pollinators, when opllinators were scarce. DA - 2011 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2011 T1 - Can and do Ericas self pollinate? TI - Can and do Ericas self pollinate? UR - http://hdl.handle.net/11427/24396 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/24396
dc.identifier.vancouvercitationArendse B. Can and do Ericas self pollinate?. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2011 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/24396en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherBotanyen_ZA
dc.titleCan and do Ericas self pollinate?en_ZA
dc.typeBachelor Thesis
dc.type.qualificationlevelHonours
dc.type.qualificationnameBSc (Hons.)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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