Effet de la salinit. sur le fonctionnement hydrique et la productivit. de deux vari.t.s de bl. dur de tol.rance variable . la s.cheresse.
2003
Ayoujil A.
French. This study, carried out at the lysimeter station of IAM-Bari, is aimed at analysing the effects of soil salinity on water status, growth, productivity and efficiency of two durum wheat varieties, a local one (variety Haurani) and a selected one (variety Cham-1) by ICARDA.In the non-saline soil, the two varieties exhibit the same leaf area and final biomass yield. Grain yield water efficiency is definitely greater in Cham-1. This result is ascribed to a shorter growing cycle and higher harvest index. In saline soils, Haurani variety shows water efficiency close to the control, whereas Cham-1 variety improves its efficiency. This improvement is associated with several drought-adaptation mechanisms observed in this variety, such as: accelerated growing cycle, osmotic adjustment and maintaining a high number of productive tillers under water stress conditions.The observed results indicate that the Cham-1 variety is better adapted to salinity than variety A.
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