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      Biologia reprodutiva de Psychotria carthagenensis (Rubiaceae), espécie distílica de fragmento florestal de mata ciliar, Centro-Oeste do Brasil Translated title: Reproductive biology of Psychotria carthagenensis (Rubiaceae), a distylous species of riparian forest fragments, West Central Brazil

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          Abstract

          Resumo Este estudo teve por objetivos analisar a fenologia de floração, a biologia e a morfologia floral, o sistema e o sucesso reprodutivo dos morfos florais de Psychotria carthagenensis Jacq. O período de floração se estendeu de maio (estação seca) a janeiro (estação chuvosa). A floração dos morfos florais foi sincronizada e o número médio de inflorescências, de botões em pré-antese e de flores abertas por indivíduos foram semelhantes. A antese das flores de ambos os morfos foi de 12 horas. Houve diferença significativa no comprimento da corola, dos lobos estigmáticos, das anteras e altura do estilete entre os morfos florais. A viabilidade de pólen foi alta entre ambos os morfos. A formação de frutos ocorreu em polinizações intramorfos e intermorfos e não houve diferença significativa na produção de frutos e sementes em tratamentos intermorfos. Os atributos florais analisados sugerem que os dois morfos contribuem similarmente para a manutenção da espécie na área de estudo.

          Translated abstract

          Abstract This study aims to examine flowering phenology, floral biology and morphology, and the reproductive system and success of the floral morphs of Psychotria carthagenensis Jacq. The long flowering period lasts from May (dry season) to January (rainy season). Flowering of the floral morphs was synchronized and the number of inflorescences, buds in pre-anthesis and flowers per plant were similar. Anthesis of the flowers of both morphs was 12 hours. Significant differences were observed in the corolla length, the stigmatic lobes, anthers and styles between floral morphs. Pollen viability was high in both morphs. Intermorph and intramorph pollinations resulted in fruit set. There was no significant difference between intermorph treatments in fruit and seed production. The flower attributes indicate that both morphs contribute similarly to species persistence in the study area.

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          The biology of heterostyly

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            Plantas do Pantanal

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              Pollination ecology - A practical approach

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rod
                Rodriguésia
                Rodriguésia
                Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (Rio de Janeiro, RJ, Brazil )
                0370-6583
                2175-7860
                September 2010
                : 61
                : 3
                : 551-558
                Affiliations
                [1] Tangará da Serra Mato Grosso orgnameUniversidade do Estado de Mato Grosso orgdiv1Centro de Estudos, Pesquisa e Desenvolvimento Agro-Ambiental orgdiv2Depto. Ciências Biológicas Brazil
                Article
                S2175-78602010000300551
                10.1590/2175-7860201061314
                75455083-6db6-46fa-a4af-4c86a7ed43e3

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 22 March 2010
                : 13 July 2009
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 39, Pages: 8
                Product

                SciELO Brazil


                fenologia de floração,morfologia floral,sucesso reprodutivo,floral morphology,flowering phenology,heterostyly,reproductive success,heterostilia

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