Effect of salinity stress, Streptomyces sp. SF5 and Salsola vermiculata on germination of Triticum durum L

Exposure of wheat (Triticum durum L.) to NaCl (100 and 200 mM) showed that this variety is moderately halo tolerant. Germination rates in the absence and presence of salt (100 and 200 mM) are respectively 98.3, 83.3 and 53.3%. The supply of Salsola vermiculata and the combination between this halophyte and Streptomyces sp. SF5 affected germination significantly. Germination rates in the absence and presence of 100 and 200 mM of NaCl are respectively 86.65, 55, 48.3% (Salsola alone), 66.65, 53.3 and 36.65% (Salsola+ Streptomyces sp). The lengths of roots and steams are also inhibited by salinity. Roots and steams lengths are reduced by factors of 2.12 and 5.51 at 100 mM, the reduction is more pronounced at 200 mM, reduction factors are respectively 5.96 and 10.89. Streptomyces sp.SF5 appears very efficient in improving germination rates, they are respectively 85 and 68.3% (100 and 200 mM) compared to the controls. The improvement factors of the lengths of roots and steams are respectively 1.10, 1.17, 1.81, 1.02, 1.11 and 2.29.