Fig 3. Principal component analysis of the four salt stress conditions of durum wheat in presence and absence of both salinity and mycorrhizal inoculation.

Components of the eleven analyzed genes were also indicated. No-stress +AM and No-stress–AM means absence of salt stress with or without AM fungi inoculations, respectively; Saline-stress +AM and Saline-stress–AM means presence of salt stress with or without AM fungi inoculations, respectively.