Assessment of the breeding system in the Algerian narrow coastal endemism Anacyclus linearilobus (Anthemideae, Asteraceae)

Adrián Sánchez-Albert; Rubén Torices; Meriem Kaid-Harche; Inés Álvarez

doi:10.3989/ajbm.542

Autores/as

Adrián Sánchez-Albert Department of Biodiversity, Ecology and Evolution, Complutense University of Madrid, https://orcid.org/0000-0001-7529-3838
Rubén Torices ECOEVO Group, Department of Biology and Geology, Physics, and Inorganic Chemistry, Rey Juan Carlos University https://orcid.org/0000-0001-9604-1111
Meriem Kaid-Harche Department of Biotechnology, University of Sciences and Technology of Oran https://orcid.org/0000-0003-0530-6220
Inés Álvarez Department of Biodiversity and Conservation, Real Jardín Botánico (RJB), CSIC https://orcid.org/0000-0002-5982-5424

DOI:

https://doi.org/10.3989/ajbm.542

Palabras clave:

Aseguramiento reproductivo, auto-fertilización, Compuestas, Mediterráneo occidental, sistema de cruzamiento mixto

Resumen

Se evaluó el sistema de cruzamiento de Anacyclus linearilobus, una especie anual y endémica, de reducida distribución en ecosistemas dunares de la costa argelina, mediante la probabilidad de producir semillas en 20 individuos de dos poblaciones, cultivadas en jardín. El sistema de reproducción se determinó para cada individuo por el índice de autoincompatibilidad (ISI). Estos resultados se compararon con los publicados para otras especies del género, A. clavatus, A. homogamos y A. valentinus. Los resultados de los cruces experimentales mostraron que hubo una gran variación en el éxito reproductivo femenino entre individuos de A. linearilobus, como la encontrada en su especie hermana, A. valentinus. A diferencia de las otras especies del género que son autoincompatibles, A. linearilobus mostró un sistema de cruzamiento mixto, con una mayoría de individuos autoincompatibles, otros parcialmente autoincompatibles y algunos autocompatibles. Argumentamos que esta estrategia puede estar relacionada con el aseguramiento reproductivo en esta especie anual endémica cuyo tamaño efectivo de población se ha reducido probablemente debido a incompatibilidad entre individuos emparentados.

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