article · International journal of innovation and applied studies
The effect of soil salinity on some agrophysiological parameters at different stages of growth (Elongation and Heading) was studied in four varieties of durum wheat (Triticum durum Desf.) Namely: Carioca (V1), Karim (V2) Tarik (V3) and Tomouh (V4), under control of three saline levels (3, 6 and 9 g / l NaCl). The results obtained show that the salinity leads to an increase in the water content, the sugar content and the Na+ and Cl- content. However, a decrease in plant length, number of leaves, number of plants, last leaf length, fresh and dry biomass, K+ content, K+ / Na+ ratio, and number of spikes was observed. The results prove the tolerance to salinity of the variety Carioca (V1) compared to other varieties. This tolerance is manifested by a lower decrease in fresh and dry biomass, K+ content and yield. Also, this variety was characterized by a lower salt sensitivity index (I.S.R.S) and a low accumulation of Na+ and Cl- especially at higher concentrations (6 and 9 g / l NaCl).
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