Institute des Regions Arides Medenine
Institute des Regions Arides Medenine
Mezghani N.,Banque Nationale de Genes de Tunisie |
Bouhlila A.,Banque Nationale de Genes de Tunisie |
Robbana C.,Banque Nationale de Genes de Tunisie |
Rouz S.,Institute Superieur Agronomique Of Mogran |
And 6 more authors.
Acta Horticulturae | Year: 2017
The genus Daucus includes about 20 recognized species worldwide. Northern Africa represents a major center of diversity of Daucus, with Tunisia containing at least 12 species and six subspecies. We assessed morphological diversity from a Daucus L. germplasm collection of 103 accessions at the National Gene Bank of Tunisia. Previous investigation showed the effectiveness of fruit characters to identify several species and subspecies in the collection. However, distinction between wild carrot D. carota subsp. carota, cultivated carrot D. carota subsp. sativus (Hoffm.) Arcangeli and the morphologically similar species D. capillifolius was difficult. In order to further describe the collection and to resolve taxonomic classification between some Daucus species, we adopted here a descriptor list with 40 characters related to leaf, stem, flowering and inflorescence on a field collection of 17 accessions corresponding to the different species. Our results revealed significant differences between accessions for almost all characters. They will assist in future development of identification keys for Daucus species and subspecies in Tunisia.
Bechir R.,Institute des Regions Arides |
Abdeladhim M.A.,Institute des Regions Arides Medenine |
Dhifallah S.M.,Institute Superieur Of Gestion Gabes |
Sghaier M.,Institute des Regions Arides Medenine
New Medit | Year: 2010
Sustainable development is regarded today as a goal which has to be reached by all countries. Therefore cooperation for development is more than ever necessary to face the global challenges such as poverty, human health, food crisis etc. Cooperation is all the more crucial as the Millennium Development Goals (MDGs), adopted in 2000, are gaining consensus at the international level. To achieve this objective all countries have to commit themselves to creating a favourable and dynamic international economic environment. However the current financial and economic crisis is posing many constraints and difficulties to the achievement of the MDGs by the year 2015. The aim of this work is to analyse the concept of financial crisis by illustrating the causes and the consequences of the current crisis and its effects on the global economy with special reference to the situation in Tunisia.
Bechir R.,Institute des Regions Arides Medenine |
Ounalli N.,Institute des Regions Arides Medenine |
Sghaier M.,Institute des Regions Arides Medenine |
Jaouad M.,Institute des Regions Arides Medenine |
Dhifallah S.M.,Institute Superieur des Etudes Technologiques Djerba
New Medit | Year: 2011
Sustainable development strategies are regarded today as a tool to improve the living conditions and alleviate poverty of population, above all in rural areas. The aim of this work is to focus on the current state of sustainable development in Tunisia with a view to achieving the Millennium Development Goals (MDGs). To this end we shall analyze preliminarily some spatial data applied to a set of development indicators by means of the principal components analysis method (PCA) to highlight regional disparities at the governorate level and above all disparities between Tunisian coastal and inland regions.
Seddik M.M.,Institute des Regions Arides Medenine |
Cuaquil L.,National Veterinary School of Toulouse |
Driot C.,National Veterinary School of Toulouse |
Khorchani T.,Institute des Regions Arides Medenine
Bulletin de la Societe Zoologique de France | Year: 2011
Ticks (suborder Ixodida) are widespread in the world and infect many animal species, including camels. On the host, ticks are known for their dual effects: the first direct, since they are strictly haematophagous, and the second indirect, because they are implicated in the transmission of certain animal diseases. However, tick infestation depends on several factors related to the environment and to the host. Different epidemiological conditions favoring the spread of certain diseases are encountered in different camel-farming systems of southern Tunisia. In this respect, followed tick infestation for camels in different herding methods, with the aim of developing an adapted strategy against these parasites. This work describes field observations of infestations in extensive ranches and from monitoring daily infestations of animals raised in semi-extensive and intensive systems. Our observations show that ticks parasitizing camels in southern Tunisia belong to the genus Hyalomma. The degree of camel infestation by ticks varies with the farming methods. In ranching, the degree of infestation depends on the areas grazed: it is more intense on low and salty paths, but it is low on dry and stony paths. Monitoring the kinetics of infestations in semi-extensive rearing in camels using more or less humid paths shows that the number of ticks per animal can exceed 100 individuals, whose distribution on the body of the animal depends on the season and the thinness skin of the animal's skin. In the intensive system, the infestation of camels is very low or even absent.