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Rasgos funcionales de semillas de Calycophyllum candidissimum (Rubiaceae), árbol pionero del Neotrópico

Authors: Alejandra Gutiérrez; Mayté Pernús; Jorge A. Sánchez;

Rasgos funcionales de semillas de Calycophyllum candidissimum (Rubiaceae), árbol pionero del Neotrópico

Abstract

Calycophyllum candidissimum es un árbol pionero del Neotrópico, melífero, maderable, medicinal y ornamental. En Cuba está considerado como una especie Casi Amenazada; sin embargo, poco se conoce sobre la biología de su semilla. Con el objetivo de contribuir a su propagación y conservación, se estudiaron características morfofisiológicas de las semillas, clases de dormancia y requerimientos germinativos. La germinación se evaluó en condiciones de laboratorio bajo luz y oscuridad constante a temperatura ambiente (27,5 ± 2 ºC). Los frutos presentaron como promedio 49 semillas viables, pequeñas, de bajo contenido de humedad inicial (9,25 %) y con embriones desarrollados y espatulados. Las semillas solo germinaron a la luz (fotoblásticas positivas), pero el proceso germinativo de las que estuvieron en la oscuridad se reanudó rápidamente en la luz. Una parte del lote resultó no dormante, mientras que otra parte presentó dormancia fisiológica. Se discute el papel ecológico de los rasgos identificados y se brindan recomendaciones para la siembra en vivero.

Keywords

flora melífera, dormancia, germinación, árbol tropical

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selected citations
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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