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- Title
Breeding system of a plesiomorphic floral type: an investigation of small flowered Streptocarpus (Gesneriaceae) species.
- Authors
Hughes, M.; MacMaster, G.; Möller, M.; Bellstedt, D. U.; Edwards, T. J.
- Abstract
Six different floral morphologies can be found among the ca. 146 species of Streptocarpus occurring in Africa and Madagascar. One of these, a simple, small pouch type, was found to be plesiomorphic for the genus after mapping these floral types onto a molecular phylogeny. The breeding systems and population structure of three species possessing the plesiomorphic small floral morphology, S. micranthus, S. ibityensis and S. lanatus, have been investigated using nuclear microsatellite markers. Significant deviations from panmixia were found both at the between and within population level ( S. micranthus θ = 0.708, f = 0.786; S. ibityensis, θ = 0.173, f = 0.138; S. lanatus, θ=0.539, f = 0.646). As a florally diverse genus, Streptocarpus is unusual in having a predominantly selfing, mixed mating breeding system as a plesiomorphic condition.
- Subjects
STREPTOCARPUS; PLANT morphology; PLANT species; PLANT breeding; PLANT classification
- Publication
Plant Systematics & Evolution, 2006, Vol 262, Issue 1/2, p13
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-006-0453-6