%0 Generic %A Castro, Jonas B. %A Singer, Rodrigo B. %D 2019 %T A literature review of the pollination strategies and breeding systems in Oncidiinae orchids %U https://scielo.figshare.com/articles/dataset/A_literature_review_of_the_pollination_strategies_and_breeding_systems_in_Oncidiinae_orchids/11266766 %R 10.6084/m9.figshare.11266766.v1 %2 https://scielo.figshare.com/ndownloader/files/19866065 %2 https://scielo.figshare.com/ndownloader/files/19866077 %2 https://scielo.figshare.com/ndownloader/files/19866107 %2 https://scielo.figshare.com/ndownloader/files/19866116 %2 https://scielo.figshare.com/ndownloader/files/19866131 %2 https://scielo.figshare.com/ndownloader/files/19866143 %K breeding systems %K deception %K elaiophores %K fruiting success %K nectaries %K Oncidiinae %K orchids %K osmophores %K pollination strategies %X

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.

%I SciELO journals