http://dspace.univ-setif.dz:8888/jspui/handle/123456789/247 2026-04-15T23:44:45Z 2026-04-15T23:44:45Z Mebarkia, A. Benkohila, HS. Hamza, M. Makhlouf, M. http://dspace.univ-setif.dz:8888/jspui/handle/123456789/403 2015-03-23T12:32:32Z 2012-01-01T00:00:00Z

Titre: Efficacité d’une protéine entomotoxique du type a1b des graines de légumineuses Auteur(s): Mebarkia, A.; Benkohila, HS.; Hamza, M.; Makhlouf, M. Résumé: Legume seeds are toxic to pests in stored grain. The effect of the protein PA1b pea (Pisum sativum), chickpea (Cicer arietinum), bean (Phaseolus vulgaris), lentil (Lens esculenta) and bean (Vicia fabae), was evaluated at concentrations of 10, 20, 40, 60 and 80%. Legume seeds are toxic to pests in stored grain. The effect of the protein PA1b pea (Pisum sativum), chickpea (Cicer arietinum), bean (Phaseolus vulgaris), lentil (Lens esculenta) and bean (Vicia fabae), was evaluated at concentrations of 10, 20, 40, 60 and 80%. We note that all legumes tested are toxic to the species Sitophilus granarius L. and a total mortality of the insect after 14 days. On 3 rd day, there is in general 1-2 dead on wheat up to 15 days or the experiment was stopped. On peas, there is a mortality exceeding 10% at a concentration of 80% of PA1b. From 7 days, there are no survivors. For concentrations of 40% and 60%, mortality rates were 73.3% and 93.3% respectively; but, the rates are low, not exceeding the threshold of 20% for concentrations of 20% and 10%. Some legume species cause total mortality of the insect as well as 60% to 80%. This is the case of the lens, beans and bean. Others are less toxic as chickpea which causes lower mortality of about 3 and 23% respectively.

2012-01-01T00:00:00Z MEKHLOUF, A. DEHBI, F. HANNACHI, A. HARBI, M. http://dspace.univ-setif.dz:8888/jspui/handle/123456789/401 2015-03-23T12:33:06Z 2012-01-01T00:00:00Z

Titre: Réponses du blé dur aux basses températures en relations avec la capacité de production Auteur(s): MEKHLOUF, A.; DEHBI, F.; HANNACHI, A.; HARBI, M. Résumé: The present study led to unit INRAA of Sétif, had like objective the determination of the period at the risk of freezing. Identification of the tolerant lines at the low temperatures through several physiological and biochemical tests. See the various connections which can exist between its tests and the yield and its components. The tolerance with the cold expressed through the physiological tests (crown, leaves, ear) and biochemical, soluble proline and sugars shows that the lines Cyprus1, Cyprus2 and Héider//Mt//Ho contain capacities of adaptation to the cold which it is necessary exploited in the future programs of improvement and selection.

2012-01-01T00:00:00Z Belaib, I. Dekhili, M. http://dspace.univ-setif.dz:8888/jspui/handle/123456789/399 2015-03-23T12:31:58Z 2012-01-01T00:00:00Z

Titre: Caractérisation morphologique des troupeaux ovins dans la région de Sétif Auteur(s): Belaib, I.; Dekhili, M. Résumé: his investigation is about the sheep’s morphologically characterization which has concerned thirty traits (eighteen quantitative and twelve ordinals) and was done in the area of Sétif (Algeria). Data were analyzed using a discriminate analysis; the aim was to identify the most discriminate traits, rate of distinction between flocks and to describe morphologically the flocks under investigation. The results of analysis of variance showed a large differences between flocks, a wide diversity between and within flocks, sites and zones. The factorial discriminate analysis revealed, that the descriptors which allow differentiation between rams: the back height, chest‘s tower, ear length and the ischions’s width for the first axis. The neck length, back height, chest‘s tower and the ischions’s width for the second axis. For the ewes, the descriptors of the best differentiation are: the sacrum height, chest’s depth and the head length for the first axis. The chest‘s tower, the head length, chest’s depth and the sacrum height for the second axis. Flocks were different from each other and the correct classification for rams was 50.2 % and 37.8% for the ewes

2012-01-01T00:00:00Z HAFSI, M. HADJI, A. SEMCHEDDINE, N. ROUABHI, A. MAAMRI, K. http://dspace.univ-setif.dz:8888/jspui/handle/123456789/397 2015-03-23T12:32:14Z 2012-01-01T00:00:00Z

Titre: Carbon Isotope Discrimination as a tool of durum wheat selection and its stability value in eastern High Plateau of Algeria Auteur(s): HAFSI, M.; HADJI, A.; SEMCHEDDINE, N.; ROUABHI, A.; MAAMRI, K. Résumé: The last study in north eastern Algeria on the potential use of carbon isotope discrimination (CID) in wheat selection conducted between 2003-2008 in collaboration with the IAEA showed several facets. Indeed, the results of seven trials in rainfed conditions characterized by a rainfall fluctuating between 250 and 500 mm and by additional abiotic stresses such as winter-spring cold (due to altitude) and terminal heat (because of close proximity of the Saharan desert). In this type of area, several genotypes of diverse origin were evaluated in order to measure the stability of CID values in relation to grain yield.

2012-01-01T00:00:00Z