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Propagación de variedades recalcitrantes de Olea europaea y Argania spinosa

Authors: Celdrán López, José David;

Propagación de variedades recalcitrantes de Olea europaea y Argania spinosa

Abstract

El presente Trabajo Fin de Grado pretende contribuir a la optimización del protocolo de micropropagación de las especies oleaginosas del argán (Argania spinosa (L.) Skeels) y el olivo (Olea europea L.) con el fin de propagar variedades que puedan resistir el futuro incremento de temperaturas y déficit hídrico a causa del cambio climático, el cual tendrá un gran impacto en la Península Ibérica en los próximos años. Hemos utilizado diferentes tratamientos con auxinas, tanto in vitro como in vivo, de esquejes de estas especies oleaginosas para estudiar la formación de callo y de raíces adventicias en 22 esquejes de argán in vitro, 115 esquejes de argán in vivo y 1248 esquejes de olivo in vivo. Con los parámetros morfológicos recopilados durante este trabajo (formación del callo, número de raíces adventicias, número de hojas y longitud de los esquejes), hemos llevado a cabo diversos estudios estadísticos basados en análisis de varianzas para identificar qué tratamientos y qué parámetros influyen en mayor manera en la formación de callo y aparición de raíces adventicias en dichos esquejes. Nuestros resultados indican que existen asociaciones estadísticamente significativas en la formación de callo entre los tratamientos con auxinas y sin auxinas en los esquejes de argán in vitro. Nuestros tratamientos con auxinas para los esquejes de argán y olivo in vivo nos han permitido obtener raíces adventicias en esquejes de ambas especies con una alta eficacia, y hemos observado diferencias estadísticamente significativas en la obtención de callos y raíces adventicias y los diferentes tratamientos con auxinas. Además, hemos encontrado correlaciones positivas entre número de raíces y la formación de callo en los esquejes de argán in vivo y entre formación de callo y número de hojas en esquejes de olivo in vivo. Nuestros procedimientos permitirán aumentar la eficacia de la propagación vegetativa del olivo y el argán.

This project aims to contribute to the optimization of micropropagation protocol of the oleaginous species argan (Argania spinosa (L.) Skeels) and olive (Olea europaea L.) in order to propagate varieties that can withstand the future rising temperatures and rising shortages due to climate change, which will have a major impact on the Iberian peninsula in the coming years. We have used different treatments with auxin, both in vitro and in vivo, cuttings of these oleaginous species to study the formation of callus and adventitious roots in 22 cuttings of argan in vitro, 115 cuttings of argan in vivo and 1248 cuttings of olive in vivo. With the morphological parameters collected during this work (callus formation, adventitious root number, leaf number and length of cuttings), we have carried out several statistical studies based on analysis of variance to identify which treatments and what parameters have a major influence in callus formation and development of adventitious roots in these cuttings.Our results indicate that there are statistically significant associations in callus formation between treatments with auxin and without auxin in the cuttings of argan in vitro. Our treatments with auxins for argan and olive cuttings in vivo have allowed us to obtain adventitious roots in cuttings of both species with high efficiency, and we have observed statistically significant differences in obtaining callus and adventitious roots and the different treatments with auxin. In addition, we have found positive correlations between the number of roots and callus formation in cuttings of argan in vivo and between callus formation and leaf number in cuttings of olive in vivo. Our procedures will increase the effectiveness of vegetative propagation of olive and argan.

Keywords

CDU::5 - Ciencias puras y naturales::57 - Biología::577 - Bioquímica. Biología molecular. Biofísica, Olivo, Auxinas, Argán

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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.
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