Cryptic dioecy is widespread in South American species of Symplocos section Barberina (Symplocaceae)

Pollen morphology of ten Brazilian species within the South American clade (ca. 20 species) of Symplocos section Barberina (Symplocaceae) was analyzed with scanning electron microscopy to assess their reported androdioecious breeding system. All species exhibited pollen dimorphism. Pollen from male...

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Bibliographic Details
Published in:Plant systematics and evolution 2009, Vol.277 (1-2), p.99-104
Main Authors: Aranha Filho, J. L. M, Fritsch, P. W, Almeda, F, Martins, A. B
Format: Article
Language:English
Subjects:
Androdioecy
Biomedical and Life Sciences
Breeding
Cytoplasm
Dimorphism
Dioecy
Female flowers
Flowers
Germination
Hermaphroditism
Life Sciences
Male animals
Male flowers
Morphology
Original Article
Plant Anatomy/Development
Plant Ecology
Plant morphology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Plants
Pollen
Scanning electron microscopy
Species
Symplocaceae
Symplocos
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Summary:Pollen morphology of ten Brazilian species within the South American clade (ca. 20 species) of Symplocos section Barberina (Symplocaceae) was analyzed with scanning electron microscopy to assess their reported androdioecious breeding system. All species exhibited pollen dimorphism. Pollen from male individuals is well developed and 3-colporate, whereas that from morphologically hermaphroditic individuals is malformed, often completely fragmented, lacks cytoplasm, and has no germination pores. Our results suggest that the morphologically hermaphroditic species of S. section Barberina with malformed pollen are cryptically dioecious.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-008-0109-9