Gender specialization in Palicourea demissa (Rubiaceae), a distylous, hummingbird-pollinated treelet
Distyly has been interpreted as a mechanism that promotes cross-pollination among conspecific plants and as one of the routes leading to the evolution of dioecy. In one of the possible evolutionary pathways, pollinators may disrupt intermorph pollen flow, and, as a consequence, floral morphs may gra...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Colombia |
| Institución: | Universidad Tecnológica del Chocó Diego Luis Córdoba |
| Repositorio: | Repositorio Institucional UTCH |
| OAI Identifier: | oai:repositorioinstitucionalutch.info:20.500.12912/63 |
| Acceso en línea: | http://repositorioinstitucionalutch.info:8080/jspui/handle/20.500.12912/63 |
| Access Level: | acceso abierto |
| Palabra clave: | Asymmetric pollen flow Distyly Functional dioecy Palicourea demissa Reciprocal herkogamy |
| Sumario: | Distyly has been interpreted as a mechanism that promotes cross-pollination among conspecific plants and as one of the routes leading to the evolution of dioecy. In one of the possible evolutionary pathways, pollinators may disrupt intermorph pollen flow, and, as a consequence, floral morphs may gradually specialize as either male or female (functional dioecy). Natural patterns of pollen deposition and fruit and seed production were estimated in Palicourea demissa (Rubiaceae) and used as parameters to assess functional gender differences between floral morphs. Pollen flow was asymmetrical in P. demissa. |
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