02
mai
2026
- Titre : Water accounting for food security: the case of rainfed and irrigated olive growing in arid regions in Tunisia
- DOI : 10.71751/JAAOGv2i1y2023-12-26
- Auteur : Saida Elfkih; Saker Ben Abdallah; Amel Elkadri
- Abstract :Food and water security become challenging goals in many regions due to biophysical, socio-economic and political conditions, often amplified by climate change and other crises. In this perspective, accounting water is a crucial tool to understand the overall tendency of water consumption and to assist the decision makers in their decisional process about water and crops allocations. In this optic, the present paper aims to undertake a comparative analysis of the water use and conception in the irrigated and rainfed olive growing systems; based on an integrated method combining three key concepts of water computation: virtual water, water footprint and water productivity. The study focuses on a sample of 45 farms of irrigated and rainfed olive growing system located in Medenine and Sfax regions in Tunisia which are characterized by a semi-arid and arid climate conditions. Results show the importance of the theoretical framework adopted in clarifying the state of water consumption in a strategic sector such as the Tunisian olive growing. In addition, the different calculated indicators highlight the importance of the application of a whole technical package and a controlled and efficient use of water to improve the economic profitability of olive cultivation. Finally, the study highlights also the necessity to revise the irrigated olive growing extensions’ policies under arid conditions and to orient and sensitize farms to apply complementary irrigation in critical phases of the tree.
- Pagination : 12-26
02
mai
2026
- Titre : Morphological and molecular characterization of minor olive (Olea europaea. L) cultivars in Tunisia
- DOI: 10.71751/JAAOGv2i1y2023-27-37
- Auteur : Hana Souabni; Fathi Ben Amar; Yolanda Gogorcena; Mahdi Fendri; Sameh Mnasri; Mohamed Ali Triki; Olfa Saddoud Debbabi
- Abstract : Management of ex situ olive collection is crucial for suitable genetic resources conservation. This study aims to complement characterization of olive accessions belonging to the National olive germplasm collection located in the south of Tunisia. The morphological characterization of endocarp of 22 Tunisian cultivars was made. Multiple component analysis (MCA) showed 5 different groups of cultivars and one case of synonymy. A set of six Simple Sequence Repeat markers (SSR) were used to fingerprinting the cultivars studied. The total number of alleles was 44 with a mean of 7.33 alleles/locus. The polymorphism information content (PIC) varied from 0.45 for DCA 03 to 0.85 for DCA 16 with a mean of 0.7. The Principal Component Analysis (PCoA) was used to cluster cultivars. We assume the power of the microsatellite markers and the phenotypic richness of our local germplasm in Tunisia.
- Pagination : 27-37
02
mai
2026
- Titre : Protected designation of origin and protected geographical indication: definitions, historic and characteristics of some certified olive oils in the Mediterranean countries
- DOI: 10.71751/JAAOGv2i2y2023-32-48
- Auteur : Sirine Karra; Naziha Grati Kammoun
- Abstract : The scan of the studies realized about Protected Designation of Origin (PDO) and Protected Geographical Indication (PGI) olive oils of the Mediterranean countries showed that, despite the importance of the literature on food quality labels, reviews dealing with characteristics of labelled olive oil and joining the physicochemical properties with the regulation rules and the instructions of each specification are mainly unavailable. This study aims to consolidate the academic research state in the field of labelled olive oils (PDO and PGI) via determining the meaning of these labels, why they are used and the different regulations and specifications related to labelled olive oils. Moreover, this study takes into consideration many criteria such as varieties, specification instructions, sensorial properties…
- Pagination : 32-48
02
mai
2026
- Titre : Variabilité bioclimatique de l’oliveraie du Centre-Est Tunisien, cas de Sfax, dans un contexte de changement climatique
- DOI: 10.71751/JAAOGv2i2y2023-9-31
- Auteur : Mohamed Feki; Olfa Elloumi
- Abstract : Olive growing is one of the oldest crops in Tunisia and takes a place of choice both in ecological and agricultural plans and in socio-economic plans. However, this crop, mainly conducted in dry farming, is threatened by the global warming which leads to an advancement of these phenological stages and sometimes a modification of the quality of the olive oils. In this paper, the temporal variability of temperatures in the Sfax region, the first producer and exporter of olive oil in the country, was analysed with a multi-scalar approach. Firstly, the temporal evolution of temperatures showed a general warming since the mid-1980s for annual temperatures, and the early 1980s and 1990s for monthly temperatures. Secondly, the effects of this warming on the olive tree during its vegetative period (between March and the beginning of November) were studied and highlighted an increase in degree days since the mid-1980s. Finally, the analysis of the frequency of occurrence of atmospheric circulation types and their manifestations in terms of "mildness situation" over the region, from December to February, allowed to explain the variability of the olive tree budburst date and the precocity observed since 2014.
- Pagination : 9-31
