STUDY OF THE VARIETAL BEHAVIOR OF EIGHT DURUM WHEAT GENOTYPES UNDER CONDITIONS IN HAUT CHéLLIF (AIN DEFLA, ALGERIA)Rahim Zohra, Belhacini Fatima, Merouche AbdelkaderAbstract This study was conducted on five varieties of durum wheat of which 03 are native to the region of Ain Defla (Waha, Vitron, and Siméto), and 05 others introduced were studied during this test (NV25, NV26, NV27, NV28, NV29), to study their varietal behavior under natural climatic conditions in the semi-arid zone of Ain Defla, during the 2008/2009 campaign. The chosen experimental device is complete random blocks with 04 repetitions. The study focused on the phenological characteristics of the plant, such as plant height at maturity (cm), the number of tillers.m-2, the length of cob, the length of the pedoncule cob, as well as the development of the yield (biological and actual yield) and their components (number of fertile tillers plant-1, number of grains cob-1, 1000-grain weight (g), grain yield m-2). With phenological characteristics, the results show that some introduced varieties have a clear superiority compared to local varieties. Regarding the yield components, the results show that they are influenced by the variety factors and pedoclimatic adaptation conditions of the new varieties compared with the control varieties. Additionally, a difference between the biological and real yields was recorded to estimate the yield around 5% to 28% in the form of loss. |