Abstract
The application of salt stress on durum wheat (Triticum durum Desf.) seedlings variety « Massa » grown for 16 days in hydroponic conditions affected the growth and nutritional statute of plants. This effect is marked by a delay of the tallage, a reduction of the dry biomass, a reduction of area leaves area as well as the length of roots. In 50 mM, the growth of shoots was reduced by about 59% and 52% for the root. This depressive effect on the growth was also accompanied by nutrition modifications. The results indicated that the presence of salt induced a potentially toxic ion accumulation (Na+ and Cl−) which was more pronounced at the shoots than the roots. At the same time, the NaCl disturbs the absorption and the transportation of potassium and calcium in the shoots more than in the root. In 25 mM, the content of K+ in shoots represents only 70% of that in control. Similarly way, the content in calcium in this organs fall very strongly (5 times more lower than the control). These demonstrations reveal a particular sensitivity of the variety Massa to the salinity.
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