| Journal: | Lankesteriana |
| Database: | PERIÓDICA |
| System number: | 000401357 |
| ISSN: | 1409-3871 |
| Authors: | Pansarin, Emerson R1 |
| Institutions: | 1Universidade de Sao Paulo, Faculdade de Filosofia, Ciencias e Letras de Ribeirao Preto, Ribeirao Preto, Sao Paulo. Brasil |
| Year: | 2016 |
| Season: | Ago |
| Volumen: | 16 |
| Number: | 2 |
| Pages: | 255-267 |
| Country: | Costa Rica |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Vanilloideae as currently circumscribed comprises nine genera and two tribes: Vanilleae and Pogonieae. The pantropical genus Vanilla has been frequently assumed to be natural on the basis of its climbing habit and lateral inflorescences. However, the inclusion of the rare Dictyophyllaria dietschiana in phylogenetic analyses makes the genus Vanilla paraphyletic. Within Pogonieae, phylogenetic analyses show that inclusion of Pogoniopsis turns the tribe paraphyletic. All analyses reveal that Pogoniopsis is closely related to members of Epidendroideae. Members of Pogonieae are pollinated by several groups of solitary and social bees, two pollination systems being recognized: reward-producing and deceptive. Molecular phylogeny suggests that the common ancestor to Pogonieae gave rise to two evolutionary lineages: one tropical with a condition of reward production; and one predominantly temperate-invading line with deceptive flowers. Reward-producing flowers characterize South and Central American clade (= Cleistes), while deceptive pollination is prominent in the clade including North American-Asiatic taxa plus Amazonian Duckeella. Species of “orchid bees” have been recorded as pollinators of the genus Vanilla (V. planifolia group and V. pompona group) in the Neotropics. In species of the V. pompona group, these bees are attracted by the fragrance of the flowers. Hummingbirds have been reported to pollinate some species of Vanilla. Vanilla insignis, V. odorata and V. planifolia are known to be pollinated through generalized food deception. Some species of Vanilla yield fruits through spontaneous self- pollination. This form of autogamy has been reported for V. griffithii, V. palmarum, V. planifolia, V. savannarum and V. bicolor. In Brazil, data on the pollination biology of Vanilla are scarce, but conclusive data are available for V. edwallii, which is pollinated by Epicharis (Apidae: Centridini). This species is rewar |
| Disciplines: | Biología |
| Keyword: | Angiospermas, Ecología, Reproducción y desarrollo, Orquídeas, Biología reproductiva, Polinización, Coevolución, Pogoniae, Vanilleae |
| Keyword: | Biology, Angiosperms, Ecology, Reproduction and development, Orchids, Reproductive biology, Pollination, Coevolution, Pogoniae, Vanilleae |
| Full text: | Texto completo (Ver HTML) |
