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Parental Effect on Agronomic and Olive Oil Traits in Olive Progenies from Reciprocal Crosses

Helvia. Repositorio Institucional de la Universidad de Córdoba
  • Miho, Hristofor
  • Atallah, Mihad
  • Trapero Ramírez, Carlos
  • Koubouris, Georgios
  • Valverde Caballero, Pedro
Olive growing is undergoing a transition from traditional cultivation systems to a more technological model characterized by increased mechanization and a higher density of plants per hectare. This shift implies the use of less vigorous varieties that can adapt to the new system. Most traditional varieties are highly vigorous, and breeding programs can provide solutions to this challenge. This study investigates the parental effect on different agronomic and olive oil characteristics and its role in breeding programs. The objectives were to evaluate and characterize different agronomic and olive oil traits in the progenies from ‘Arbosana’ x ‘Sikitita’ cross and its reciprocal cross ‘Sikitita’ x ‘Arbosana’. The results showed a high variability of the characters evaluated in the progenitors of the reciprocal crosses. The highest coefficients of variation were observed in traits related to ripening index, phenolic compounds, polyunsaturated fatty acids, and D5-avenasterol, with phenolic content exhibiting the greatest variability. No statistically significant maternal effect was detected for any of the evaluated traits, although a slight positive maternal effect was systematically observed in the mean values of the evaluated traits. These results suggest that the maternal effect on olive is quite subtle, although due to a slight tendency of the maternal effect in the descriptive analyses, future studies are suggested to understand in depth the possible maternal effect on olive breeding.




Olive Bud Dormancy Release Dynamics and Validation of Using Cuttings to Determine Chilling Requirement

Digital.CSIC. Repositorio Institucional del CSIC
  • Rubio-Valdés, Guillermo
  • Cabello, Diego
  • Rapoport, Hava F.
  • Rallo, Luis
Dormancy release dynamics in olive tree (Olea europaea L.) reproductive buds as affected by cold accumulation, tree bearing status, and budburst temperature was studied under natural and controlled conditions, using both cuttings and container- and field-grown plants. The chilling necessary for dormancy release was acquired at different times within the bud population, presenting a progressive pattern of reproductive budburst. Once sufficient chilling is accumulated, 20 °C is a suitable temperature for reproductive budburst, although higher temperature, e.g., 30 °C, during dormancy release can inhibit budburst. While the bearing status of trees determined the amount of return bloom, dormancy release followed a similar pattern for previously bearing and non-bearing trees. Concurrent with investigating budburst factors, the use of shoot cuttings was tested as a method for olive dormancy release studies by contrasting with results from whole trees. It was found it to be valid for studying reproductive budburst, thus providing a useful method to screen chilling requirements in cultivar evaluation and the breeding programs currently ongoing in this species. However, the method was not valid for vegetative budburst, with varying results between cuttings and the whole plant., This work received support from European Union Horizon 2020 project GEN4OLIVE (H2020-SFS-2020-1; G.A. No. 101000427) and Spanish Ministry of Science and Innovation projects AGL2005-00930/AGR and AGL2008-02570/AGR., Peer reviewed




Interacción genotipo x ambiente en la estabilidad oxidativa y componentes de calidad del aceite de oliva

Digital.CSIC. Repositorio Institucional del CSIC
  • Yılmaz-Düzyaman, Hande
  • El Hilali, M.
  • Acar, S.
  • de la Rosa, Raúl
  • Sanz, Carlos
  • Pérez Rubio, Ana Gracia
  • Cano, Juan
  • Sánchez, Araceli
  • León, Lorenzo
IX Congreso Ibérico y XVII Congreso Nacional de Ciencias Hortícolas 2023
5 – 9 junio 2023, Mérida, La estabilidad oxidativa del aceite de oliva virgen extra (AOVE) se refiere a la capacidad del aceite para resistir la oxidación, que puede afectar a su vida útil, calidad y sabor, y se mide como el tiempo de inducción. La estabilidad oxidativa está íntimamente ligada a la composición del AOVE y puede verse afectada por factores como la variedad y el ambiente en el que se cultiva. En este estudio se compararon genotipos seleccionados por sus características agronómicas e idoneidad para el cultivo en seto de alta densidad procedentes del programa de mejora genética del olivo llevado a cabo en el IFAPA y las variedades más comunes utilizadas en este tipo de cultivo: 'Arbequina', 'Arbosana', 'Koroneiki' y 'Sikitita'. Se evaluó la estabilidad oxidativa y composición, en particular respecto al contenido en compuestos fenólicos, del AOVE obtenido en diferentes localizaciones y se examinó la variabilidad genética y la interacción genotipo x ambiente. Los resultados obtenidos muestran la mayor influencia del genotipo en la determinación de estos caracteres, la falta de interacción significativa genotipo x ambiente, el potencial de la mejora genética para seleccionar nuevos materiales adaptados al cultivo en seto y con buenos caracteres de calidad y la relación de la estabilidad oxidativa con otros caracteres de calidad del AOVE., Ayuda PID2020-115853RR financiada por MCIN/AEI/ 10.13039/501100011033 y “FEDER Una manera de hacer Europa” y programa Horizonte 2020 de la UE (grant agreement No. 101000427- GEN4OLIVE). Hande Yılmaz-Düzyaman agradece asimismo la Ayudas para contratos Predoctorales asociada al mismo proyecto y “FSE Invierte en tu futuro”.




Fungal environment associated to phyllosphere of wild olive tree in Andalusia (Olea europaea var. sylvestris)

Digital.CSIC. Repositorio Institucional del CSIC
  • López-García, A.
  • Perea, Antonio J.
  • García-Reyes, Antonio
  • Garrido Sánchez, José Luis
  • Fernández-Ocaña, Ana María
  • Alcántara, Julio M.
  • Rey, Pedro J.
Financed by EU project GEN4OLIVE — H2020-SFS-2018-2020 / H2020-SFS-2020-1H2020 (Working Package 2), Grant Agreement number: 101000427., Studies on plant microbiomes have highlighted their crucial role in the functioning of natural and agricultural ecosystems. The holobiont concept has reshaped our understanding of plants, considering not only their inherent traits and environment but also their interactions with associated microorganisms. This dataset comprises information on the presence and abundance of different fungal taxa, in the form of Operational Taxonomic Units, in leaves of Olea europaea var. sylvestris, the wild relative of cultivated olive tree in South Spain. The data was generated by meta-barcoding the ITS2 rDNA of fungi via NovaSeq sequencing. This dataset also contains information on the health status of collected leaves., Financed by EU project GEN4OLIVE — H2020-SFS-2018-2020 / H2020-SFS-2020-1H2020 (Working Package 2), Grant Agreement number: 101000427., Peer reviewed




Fungal environment associated to rhizosphere of wild olive tree in Andalusia (Olea europaea var. sylvestris)

Digital.CSIC. Repositorio Institucional del CSIC
  • López-García, A.
  • Perea, Antonio J.
  • García-Reyes, Antonio
  • Garrido Sánchez, José Luis
  • Fernández-Ocaña, Ana María
  • Alcántara, Julio M.
  • Rey, Pedro J.
Financed by EU project GEN4OLIVE — H2020-SFS-2018-2020 / H2020-SFS-2020-1H2020 (Working Package 2), Grant Agreement number: 101000427., Studies on plant microbiomes have highlighted their crucial role in the functioning of natural and agricultural ecosystems. The holobiont concept has reshaped our understanding of plants, considering not only their inherent traits and environment but also their interactions with associated microorganisms. This dataset comprises information on the presence and abundance of different fungal taxa, in the form of Operational Taxonomic Units, associated to the rhizosphere of Olea europaea var. sylvestris, the wild relative of cultivated olive tree in South Spain. The data was generated by meta-barcoding the ITS2 rDNA of fungi via NovaSeq sequencing., Financed by EU project GEN4OLIVE — H2020-SFS-2018-2020 / H2020-SFS-2020-1H2020 (Working Package 2), Grant Agreement number: 101000427, Peer reviewed