Impact of supplementary irrigation with charged water on soil solution and plant durum wheat (Triticum turgidum subsp. durum)

Résumé

Arid and semi-arider areas are subject to interannual variation rainfall which are the origin of cereal yield fluctuations. The use of tolerant wheat varieties to salinity and supplementary irrigation with saline water constitute a way to ovoid these variations. To attain this goal, 30 genotypes (composed of subscribed varieties; renowned tolerant genotypes in provenance of 13 countries and 2 varieties containing the genes of sodium exclusion Nax1 and Nax2) were tested under 2 treatments (control irrigated with tap water and saline treatment irrigated with tap water supplied with 10 g.l-1 of NaCl). Results showed that supplemental irrigation with charged water improve humidity and soil solution’s electric conductivity. In plants, supplementary irrigation with charged water induced varied responses. The plant’s height is reduced (p < 0,05) in almost tested genotypes, while the rate of leaf pigments is increased (p < 0,05) in the 2/3 genotypes subjected to the saline irrigation regime.