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Botan‪ical Sciences
Article . 2020 . Peer-reviewed
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Botan‪ical Sciences
Article
License: CC BY NC
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Botan‪ical Sciences
Article . 2020
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Biología floral, visitantes florales y sistema reproductivo de Nymphaea gracilis Zucc. (Nymphaceae)

Authors: Carmen Zepeda-Gómez; Emanuel Cruz-Muciño; Cristina Burrola-Aguilar; María Elena Estrada-Zuñiga;

Biología floral, visitantes florales y sistema reproductivo de Nymphaea gracilis Zucc. (Nymphaceae)

Abstract

Antecedentes: La biología floral influye en el sistema reproductivo de las plantas y permite identificar factores que afectan la supervivencia y dinámica de poblaciones vegetales. Preguntas: ¿Cuáles son los atributos florales, el despliegue floral, el sistema y rendimiento reproductivo, y el principal visitante floral de N. gracilis ? ¿Los cruces intrapoblacionales pueden conducir a una depresión por endogamia? Especie de estudio: Nymphaea gracilis una hidrófita enraizada emergente endémica del centro de México y amenazada de extinción. Sitio y años de estudios: El estudio se realizó en dos cuerpos de agua del municipio de Toluca, Estado de México. De agosto a diciembre de 2017 y 2018. Método: La morfología floral y la función masculina y femenina se evaluaron a lo largo de la antesis. Se analizó la producción y biomasa de frutos y semillas, los visitantes florales y la relación polen:óvulo. La estrategia reproductiva se evaluó por experimentos de exclusión de polinizadores y polinizaciones artificiales. Resultados: Nymphaea gracilis presenta antesis diurna de 4-6 días, receptividad estigmática los dos primeros días, protoginia incompleta y xenogamia facultativa. Apis mellifera realizó la mayor contribución de polinización. Los cruzamientos artificiales indicaron que la especie no es agamosperma y que mantiene un sistema de cruzamiento mixto, autocompatibilidad, autogamia, limitación de polen mediada por polinizadores y niveles relativamente bajos de depresión por endogamia. Conclusión: El sistema mixto de reproducción en N. gracilis podría estar favoreciendo la permanencia de la población y garantizar la descendencia en un ambiente donde la disponibilidad de polinizadores es baja.

Keywords

autogamia, estrategia reproductiva, QK1-989, Botany, xenogamia facultativa, autocompatibilidad, depresión por endogamia

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
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.
BIP!Popularity provided by BIP!
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.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold