Sydo® is part of a clonal selection obtained in France (INRA) in 1975. It is an expanding rootstock today, with tolerance to levels of limestone slightly higher than those of the Cotogno EMC, which went into rapid production and product quality perfectly comparable to those obtainable with BA29, albeit with slightly less vigor than the latter. Suitable for medium-high density systems. Suitable for Abate Fetel, William (only with intermediate), Conference, Kaiser and Decana del Comizio.