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Title

SILVOLIVE, a collection of wild olive genotypes as a source of resistance genes and rootstocks for olive grove cultivation

AuthorsColmenero Flores, José M. ; Díaz-Rueda, P. ; Capote, Nieves; Aguado, Ana; Romero-Cuadrado, Laura; León, Lorenzo; Carrascosa, Carlos
Issue DateOct-2018
PublisherCSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)
CSIC - Instituto de la Grasa (IG)
CitationOlive Management, Biotechnology and Authenticity of Olive Products. Olivebioteq 2018: T01-O1 (2018)
AbstractOlive cultivation has adopted intensive practices in high or super high plant densities (SHD). It has increased olive productivity, but has also led to new problems such as: new diseases, varietal impoverishment, and new forms of interaction with environmental factors. Fertigation has strongly enhanced the proliferation of soil-borne fungi like Verticillium dahliae causing verticillium wilt, currently the most threatening disease for olive crops. The increasing use of very few cultivars of reduced vigour in SHD plantations is leading to strong genetic impoverishment of the crop. SHD management in semi-arid regions requires good adaptation to deficit irrigation techniques and favours soil salinization, etc. Surprisingly olive is the only woody crop grown on its own roots. Incorporation of dwarfing rootstocks to the intensive plantation systems will allow: 1) to increase the number of cultivars compatible with the SHD system; 2) greater control of diseases such as verticillium wilt; 3) better control of abiotic disturbances. The SILVOLIVE collection consists of 149 genotypes belonging to all known subspecies of Olea europaea: europaea, laperrinei, cuspidata, cerasiformis, guanchica and maroccana. Seeds were prospected from world olive germplasm collections (Córdoba and Marrakech) and regions of Spain, Africa and the Macaronesian archipelago. The genotypes are being characterized in terms of anatomical parameters, branching habit, vigour, susceptibility to verticillium wilt and water use under full and deficit irrigation. We will take advantage of the high genetic variability of the collection as a new source of resistance genes for breeding programs and as dwarfing rootstocks that increase SHD performance
DescriptionComunicación presentada en Olivebioteq 2018, the 6th International Conference on Olive Management and Olive Products, held in Seville, Spain, on 15th-19th October 2018.
URIhttp://hdl.handle.net/10261/174709
Appears in Collections:(IRNAS) Comunicaciones congresos
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