المجلة الدولية للعلوم والتقنية

The Agricultural Center, in cooperation with (ICARDA), introduced the durum wheat genotypes: Kareem, Karam, Neema, Biltagy, Amaar 3, Baheej, Ednaan 3, Maghrabia, Strain 5, Strain 9, Strain 11 and Strain 16 to evaluating their adaptation and production. This study was conducted under Al-Gouba conditions to study the behavior of these genotypes under rainfed and supplementary irrigation during the first seasons 2015 - 2016 and the second 2016 - 2017. In addition to studying the importance of drought resistance indicators: MP, MAR, SSI, TOL, GMP, REI, STI, MSTIK1, MSTIK2, HAM, RED, RDI, DI, GM, and ATI to select for drought tolerance in these genotypes and confirming this by studying the genetic charactaristics of those genotypes : ²6G, ²6P, GCV%, PCV%, H²% , and GA%.. The study was carried out using split design in four replicates. The results showed, strain 11 was superior in biological yield 7.44, 7.92 t/ha both the two seasons and the same. Strain 11 excelled in grain yield in the first season, 3.65 t/ha, while Amaar 3 in the second season, 3.62 t/ha, compaing to the lowest Neema genotypes in the two season the heaviest weight of a thousand grains recorded from the strain 11 (44.38, 46.88 g), while dynasty 11 excelled in harvest index in the first season 49.06%, and Amaar-3 51.86% in the second season. Supplemental irrigation recorded the maximum biological yield 6.97, 6.95 t/ha and grain yield of 2.77, 2.98 t/ha. and heaviest weight of a 1000 grains : 37.96 , 38.18gr, and the largest harvest index : 39.74, 42.88% comparing to rain-fed farming, 3.74 , 3.62 t/ha of biological yield , 1.27, 1.25 t/ha grain yield , 25.58, 25.17 , of a 1000 grains weight and 33.95 and 34. 53% of harvest index in both the two study factors was highly significant for the aforementioned characteristics in both the two season drought tolerance indices showed adaptability Kareem and Amaar-3 to rain-fed farming and Amaar-3, Strain-11 for supplementary irrigation, farming and inconvenience of Neema genotype to the study conditions. The results showed the importance of these genotypes for improving the suitability of cultivation under water shortages conditions. Keywords: durum wheat genotypes. drought tolerance indices - genetic characteristics.