Efecto del sitio de procedencia sobre los atributos de las semillas de Cakile edentula (Brassicaceae), especie estabilizadora de duna costera

Ricardo Álvarez-Espino, Gabriela Mendoza-González, Candelaria Pérez-Martin, Xavier Chiappa-Carrara

Abstract


Background: The morphological traits and germinative behavior of seeds vary within a species in response to multiple factors. Knowledge of this variability is important in understanding adaptation of species to environmental conditions.

Question: Does the provenance of seeds of Cakile edentula affect seed traits? Does the climate of the sites of origin of the seeds influence their variability? Does the presence of light affect seed germination?

Study species: Cakile edentula (Bigelow) Hook.

Study site: Coastal dune vegetation on the northern coast of the Yucatan Peninsula in August and October 2017.

Methods: Seeds of Cakile edentula were collected in different locations on the northern coast of the Yucatan Peninsula. Under laboratory conditions it was assessed whether the origin of the seeds influenced some traits such as seed mass, moisture content, viability and germinative behavior.

Results: Seed provenance significantly affected seed mass and moisture content in C. edentula. Moreover, the seeds of C. edentula collected from hot and humid sites germinate quickly and in greater proportion than the seeds from warm and dry sites of the Yucatan Peninsula. The seeds of C. edentula germinate preferably in darkness, regardless site of provenance.

Conclusions: Some seed traits of C. edentula are affected by the site of provenance. Evidence suggests that climatic variation is likely to influence the initial characteristics of the life history in this coastal dune species.

Keywords


Cakile edentula; coastal dune; germination; negative photoblastism

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DOI: http://dx.doi.org/10.17129/botsci.2050

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Botanical Sciences is an international peer-reviewed journal that publishes scientific papers in plant sciences. The arguments, figures / schemes / photographs, quality and the general contents of this publication are full responsibility of the authors, and not commit the Editor- in-Chief or the Sociedad Botánica de México.

Botanical Sciences year 8, Vol. 97, No. 1, January-March 2019. Quarterly publication edited and published by Sociedad Botánica de México A.C. (www.socbot.mx). Editor in Chief Salvador Arias, Jardín Botánico, Instituto de Biología, 3er Circuito s/n, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510. Reserves of Rights to the Exclusive Use No. 04-2017-040716054100-203, digital-ISSN 2007-4476, both granted by the Instituto Nacional del Derecho de Autor. Responsible for updating the page Pedro López, email: plopez@escire.mx, eScire. Last update March 11, 2019.

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