Effect of Tow levels of Water Stress on Some Morphological and Productive Traits of Durum Wheat (Triticum durum Desf.) Genotypes

Abstract

 This research was carried out during the Agronomic season 2021- 2022 in green house pot experiments in order to study the effect of two levels of water stress (55 and 75%) of field capacity in comparison to the control (100%) of field capacity on some morphological and productive traits of six genotypes of durum wheat. The results showed negative effect of water stress on all traits. The productivity decreased by 55.11% and 70.05% at level of water stress 75% and 55%, respectively. The results also showed that the most sensitive genotype to water stress was A.1431with an average grain yield of (459.1)g/m2, while the genotypes, Doma.1 and D.55756, were the most tolerant with an average grain yield of (600.8, 591) g/m2, respectively.

The simple linear correlation analysis showed a highly significant positive correlation between grain yield and both the number of grains/plant and the harvest index, which indicates the importance of these two traits in selection of grain yield in dry environment.