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Botan‪ical Sciences
Article . 2015 . Peer-reviewed
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Botan‪ical Sciences
Article
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Botan‪ical Sciences
Article . 2015
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Variación en grados de latencia en semillas entre colectas de chile piquín ( Capsicum annuum var. glabriusculum )

Authors: Anaid Cano-Vázquez; Ma. Cristina López-Peralta; Hilda A. Zavaleta-Mancera; Nicacio Cruz-Huerta; Iván Ramírez-Ramírez; Alfonso Gardea-Béjar; Víctor A. González-Hernández;

Variación en grados de latencia en semillas entre colectas de chile piquín ( Capsicum annuum var. glabriusculum )

Abstract

El chile piquín ( Capsicum annuum var. glabriusculum ) que se consume en México es, en su mayoría, recolectado de plantas silvestres. Esta actividad podría amenazar la diversidad genética de la especie. Idealmente, el chile piquín debería producirse intensivamente para proteger la población silvestre y satisfacer la demanda; sin embargo, la baja germinación de semillas de esta especie de chile ha sido tradicionalmente un problema para su establecimiento a nivel comercial. Las causas de lo anterior son desconocidas. Identificar las causas de la baja germinación y la diversidad entre colectas es, por tanto, de importancia. Se evaluaron 16 diferentes colectas de chile piquín provenientes de siete estados del país y del sur de Estados Unidos. Un estudio morfológico determinó que en las colectas evaluadas no existen diferencias ni barreras morfológicas que impidan la germinación apropiada de las semillas. Una cinética de imbibición determinó que no existen impedimentos físicos para el paso apropiado de agua al interior de las semillas; sin embargo, la germinación de las 16 colectas fue muy variable (0 a 66%), con un promedio de 15%. El pretratamiento de las semillas con la hormona AG3 (5,000 ppm), elevó la tasa promedio de germinación a 59% en 14 de las 16 colectas, mientras que los tratamientos de acondicionamiento con peróxido de hidrógeno y nitrato de potasio solamente mejoraron la germinación de semillas en dos y cuatro colectas, respectivamente. El presente trabajo corrobora que la limitante de germinación en semillas de chile piquín se debe a un fenómeno de latencia fisiológica, la cual puede romperse con aplicación exógena de AG3 a 5,000 ppm, cuyos efectos varían entre colectas.

Keywords

ácido giberélico, QK1-989, Botany, imbibición, germinación, latencia

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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!
10
Top 10%
Top 10%
Average
gold