Oueslati Download sheet Fruit Denomination and synonyms I. Trujillo, D. Barranco, P. Morello El Alaa El Alaa El Leguim El Leguim El Horr El Horr Origin and diffusion The origin of Oueslati is the gouvernorate of Kairouan in the centre of Tunisia and it is adopted in two main regions (Kairouan and Siliana) (Trigui and Msallem, 2002). While considered as secondary variety, it is now very required in many regions of Tunisia especially for its oil quality. Fathi Ben Amar Purpose Oil Morphological characterisation Tree Vigour Medium Growth habit Spreading Canopy density Sparse Fruit Weight Low Radio length/width in position A Moderately elongated Over colour at full maturity Black Symmetry in position A Weakly asymmetric Shape of apex in position A Rounded Nipple Absent or weak Shape of base in position A Truncate Leaf Length Medium Width Medium Radio length/width Moderately elongated Curvature of longitudinal axis Incurved Stone Radio length/width Moderately elongated Weight Low Shape of apex in position A Obtuse Symmetry in position A Weakly asymmetric Symmetry in position B Symmetric Shape of base in position A Acute Number of grooves on basal end Between 7 and 10 Distribution of grooves on basal end Strongly grouped around suture Mucron Present Rugosity of surface Weak Molecular characterisation (SSRs) UDO-43 DCA3 DCA9 DCA16 GAPU-101 175/175 241/241 174/192 122/173 191/199 Agronomic characterisation and commercial considerations This variety was found to be difficult for propagation with semi-hardwood cuttings and therefore it was propagated by grafting on the local cultivar ‘El Horr’ (Trigui and Msallem, 2002). The fat rate varies from 28 % in irrigated conditions (Elloumi et al. 2017) to 31% in rainfed conditions and optimum maturity (Grati-Kamoun and Khlif, 2001). The oil is characterised by high oleic acid level (68 to 76%) and low palmitic acid level (9 to 12%) (Grati-Kamoun and Khlif, 2001). For sensorial profile, the oil of Oueslati is with spicy and bitter taste and green almond aroma (Grati-Kamoun and Khlif, 2001). Regarding Verticillium dahliae disease, Oueslati is classified susceptible (Yaacoub et al. 2017). While it is resistant to olive mite (Chatti-Kolsi et al. 2016).Oueslati is found to be with low vigor, medium productivity and high alternate bearing both in rainfed and irrigated conditions (Elloumi et al. 2017). The tree of Oueslati is autofertile and it has moderate behaviour against draught and salinity (Elloumi et al. 2022). Fathi Ben Amar