Response to Inoculation with Arbuscular Mycorrhizal Fungi of Two Tomato (<i>Solanum lycopersicum</i> L.) Varieties Subjected to Salt Stress under Semi-Controlled Conditions

Salinity is a major problem that seriously impacts agricultural production, particularly of tomato (Solanum lycopersicum L.). However, the plant has ability to associate with Arbuscular Mycorrhizal Fungi better tolerate salt stress. Thus, thanks extension AMF hyphae, hydromineral nutrition and tolerance excess toxic ions (Na+ Cl-) are optimized. In this context, contribution stress two varieties under semi-controlled conditions was studied. To do this, frequency intensity mycorrhization, relative mycorrhizal dependency, survival rates, aerial root dry weights, mineral (P, K+, Na+) proline contents plants subjected four levels salinity [0, 70, 140 210 mM NaCl] were evaluated. All parameters assessed appeared be dependent on variety, fungal strain NaCl concentration. With Lady Nema inoculation Claroideoglomus etunicatum at [NaCl mM] resulted in highest frequencies (54%), intensities (40.47%), dependencies (19.65%). This same symbiotic couple recorded high rates (55%) (2.03 g) (0.50 weights. Significant K+ (Leaves: 7.5 mg⋅g-1; Roots: 4.4 mg⋅g-1 matter), P 15.15 matter) (975 nmoles⋅g-1 fresh also by pair, lowest Na+ 1.93 0.96 matter). For Mongal mM], (50.36%), (35.14%) (43.95%) obtained Rhizophagus fasciculatus. The (59%) (2.58 (0.79 weights couple. 6.1 3.09 12.49 (942 most important those 2.03 1.53 for pair. best partner variety C. etunicatum, followed F. mosseae R. fasciculatus, while it mosseae.