| Registro completo |
| Provedor de dados: |
Acta Botanica
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| País: |
Brazil
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| Título: |
A literature review of the pollination strategies and breeding systems in Oncidiinae orchids
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| Autores: |
Castro,Jonas B.
Singer,Rodrigo B.
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| Data: |
2019-12-01
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| Ano: |
2019
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| Palavras-chave: |
Breeding systems
Deception
Elaiophores
Fruiting success
Nectaries
Oncidiinae
Orchids
Osmophores
Pollination strategies
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| Resumo: |
ABSTRACT Oncidiinae is an exclusively Neotropical orchid subtribe with about 1600 described species and an impressive array of vegetative and floral morphological adaptations. We present the results of a literature survey on the pollination strategies and breeding systems of this orchid subtribe. The flowers are pollinated by a wide range of insects (mostly bees) and, sometimes, hummingbirds. Several genera reward their pollinators with floral resources such as oils, nectar or perfumes. Whereas pollination by oil-gathering bees likely evolved several times within Oncidiinae, exclusive pollination by perfume-gathering male Euglossine bees is likely restricted to a set of closely-related genera. Pollination by food or sexual deception is also present within the subtribe. Up to date, the pollen-vectors of the 92 species of Oncidiinae studied so far are as follows: 84.7 % are pollinated by bees, 6.5 % by wasps, 4.3 % by hummingbirds, 3.2 % by butterflies and 3.2 % by flies. Oncidiinae orchids are preferentially self-incompatible (69.4 % of the species studied so far), some may also present protandry as a mechanism to promote cross-pollination. Fruiting success is generally low. The rate of visitation with subsequent pollination is low, in general, which contributes to the low reproductive success of this plant group.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400618
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| Editor: |
Sociedade Botânica do Brasil
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| Relação: |
10.1590/0102-33062019abb0111
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| Formato: |
text/html
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| Fonte: |
Acta Botanica Brasilica v.33 n.4 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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