https://dspace.univ-ouargla.dz/jspui/handle/123456789/3991 2026-04-23T10:00:27Z 2026-04-23T10:00:27Z Amel MILLA Samia DAOUDI-HACINI Jean-François VOISIN Salaheddine DOUMANDJI https://dspace.univ-ouargla.dz/jspui/handle/123456789/6679 2019-05-09T09:40:52Z 2011-06-01T00:00:00Z

Titre: Caractéristiques biochimiques de quelques espèces de fruits charnus communes dans le Sahel algérois recherchées par les oiseaux frugivores Auteur(s): Amel MILLA; Samia DAOUDI-HACINI; Jean-François VOISIN; Salaheddine DOUMANDJI Résumé: In the Sahel of algeirs the availability of diverse fruits are important. We identified 90 species of fruit-bearing plants and exotic species belonging to 28 families of plants. The timing of fruit-producing species of berries during 4 seasons is such that the birds are fruits available throughout the year. We studied the biochemical characteristics of the fruits of 8 plant species most common in the Sahel Algiers. The biochemical characteristics of the fruits are taken into account the levels of water, carbohydrates, lipids and proteins. The rate for water varies between 9.21 ± 6.07% and 86.4 ± 1.79%. The most prevalent for the fruit with water levels between 50 and 75%, represented by 22 species (38.6%). Carbohydrate levels fluctuate between 21.5% Phoenix canariensis and 87.5% for Myrtus communis. As for the level of lipids they reach a minimum of 9.0% in the dates of Washingtonia filifera and 31.7% in olives of Olea europaea. The percentages of protein ranged between 9.6% for Myrtus communis and 48.4% for Pistacia lentiscus. We notice that Olea europaea and Ficus retusa are the richest in calories respectively with 584.1 and 518.4 Kcal / g. corresponding to 2441.3 and 2166.9 kJ / g. Melia azedarach meanwhile, has the nutritional value the lowest with 305.3 Kcal / g. corresponding to 1276.2 kJ / g. The analysis of variance revealed a significant difference between nutrients and plant species. Description: Algerian Journal of Arid And Environment (AJAE)

2011-06-01T00:00:00Z LONGO-HAMMOUDA F H TOUMI K MOUATS A BENLAMNOUAR N https://dspace.univ-ouargla.dz/jspui/handle/123456789/6681 2019-05-09T09:41:17Z 2011-06-01T00:00:00Z

Titre: Contribution à la connaissance de la population cameline femelle «Tergui» dans la wilaya de Tamanrasset Auteur(s): LONGO-HAMMOUDA F H; TOUMI K; MOUATS A; BENLAMNOUAR N Résumé: In the perspective of knowledge and preservation of the cameline population "Tergui" in the wilaya ot Tamanrasset and , more exactly, in the region of atakor, 25 stockbreeders has been counted which the size of herds varies of 10 in more of 50 heads. The stockbreeders are divided on three (03): In-Amguel, Sillet and Tamanrasset. The led inquiry conserned a total of 66 females. This study allowed us to identify two branches of the population cameline "Tergui" to be known, Mehri and Merrouki. Description: Algerian Journal of Arid And Environment (AJAE)

2011-06-01T00:00:00Z MIGEON Aude BLAUDEZ Damien GUINET Frédéric CHALOT Michel BOTTON Bernard https://dspace.univ-ouargla.dz/jspui/handle/123456789/6663 2019-05-09T09:40:11Z 2011-06-01T00:00:00Z

Titre: Accumulation des métaux lourds chez le Peuplier: Localisation tissulaire et expression de quelques transporteurs Auteur(s): MIGEON Aude; BLAUDEZ Damien; GUINET Frédéric; CHALOT Michel; BOTTON Bernard Résumé: In plants, non-essential elements such as Cd and Pb can be absorbed and constitute a potential hazard because they enter the food chain. Trace elements such as Zn, Fe, Cu, Co, Mn, Mo and Ni are necessary biological processes, but their excessive accumulation can be toxic. In this study it was shown that the poplar (Populus spp.) Could accumulate relatively high concentrations of some metals (Cd, Zn and Ni) compared to other woody species. Different cultivars were tested in hydroponics and it was shown that hybrids of Populus trichocarpa accumulated more than others. These hybrids were implanted in two polluted sites, and it follows that, combined to produce a high biomass that can be used to produce energy, the character accumulator Poplar, makes this tree a good candidate for phytoremediation. A study of tissue localization of metals in leaves and stems of poplars subjected to polycontamination metal was also taken by scanning electron microscopy (SEM) and Mass Spectrometry Secondary Ion (SIMS). The latter technique showed that Zn was mostly concentrated in the mesophyll. To analyze some determinants of metal tolerance, measures of expression and functional characterization of transporters belonging to the CDF family (Cation Diffusion Facilitator) were conducted in different tissues and under different physiological conditions. The specificity of genes expressed and their localization were studied respectively by functional complementation and heterologous expression following GFP fusion in yeast. These techniques allowed to identify a carrier of Zn (PtMTP2) and a transporter of Mn (PtMTP9). Description: Algerian Journal of Arid And Environment (AJAE)

2011-06-01T00:00:00Z Amor HALITIM https://dspace.univ-ouargla.dz/jspui/handle/123456789/6658 2019-05-09T09:41:31Z 2011-06-01T00:00:00Z

Titre: L’aridoculture et le développement durable Auteur(s): Amor HALITIM Résumé: Dryland farming is a practice whose aim is to meet food needs and socio-economics of arid regions with scarce water resources, low fossils or fragile ecosystems. However, it is often a factor in environmental degradation. In fact, whether based on rainfed agriculture and irrigated, it deals with pastoralism or sedentary, there is a violation of basic components of ecosystems (soil, water, plants) in these regions, jeopardizing its sustainability with the economic consequences (loss of productivity of agricultural systems, living standards and purchasing power) and social (rural to urban, social peace threatened). Some strengths characterize these regions and should be valued. Firstly, the sun and wind can be a source of renewable energy use in agriculture to perform different tasks. If arid regions are defined as areas with low water resources, as is sometimes the case of a part of the Sahara, has immense underground water reserves. High temperatures and light soils conducive to the production of vegetables. Speculation specific commercially valuable as phoeniculture or great endurance as the camel. Agroecosystems (oases) adapted property and capitalize on the ecological factors of production and whose impact is not just agriculture. A rich flora of great value in an agronomic, environmental and medical. A certain tourist attraction. Know-how and adaptability of local populations to manage and support drylands harsh living conditions. Various development programs were implemented in these areas both to enhance agricultural production and protecting the environment, but it is clear that the objectives of these programs have not always met because they were n 'had no scientific basis and technical resources, did not mesh with the realities on the ground, were not associated with the populations involved and because the problem was too large and requires an interdisciplinary and intersectoral action. Political will is challenged here more than elsewhere, through the realization of a plan for long-term development of these areas where agriculture is indeed the focal area but must be accompanied by other sectors, hydraulics, industry, research, tourism, transportation, public works, crafts etc., as part of an integrated space. This sustainable development strategy must be developed in light of the specificities, strengths, constraints of arid, but also in light of experience and change the world. Description: Algerian Journal of Arid And Environment (AJAE)

2011-06-01T00:00:00Z