Data/hora: 08/06/2024 16:00:23

Provedor de dados: 	39	
País: 	Brazil	
Título: 	A literature review of the pollination strategies and breeding systems in Oncidiinae orchids	
Autores: 	Castro,Jonas B.; Singer,Rodrigo B.	
Data: 	2019-12-01	
Ano: 	2019	
Palavras-chave: 	Breeding systems; Deception; Elaiophores; Fruiting success; Nectaries; Oncidiinae; Orchids; Osmophores; Pollination strategies.	
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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400618	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062019abb0111	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.33 n.4 2019	
Fonte: 	info:eu-repo/semantics/openAccess