Thirteen species of wild edible plants belonging to 11 botanical families consumed in the traditional Mediterranean diet were evaluated. Sanguisorba minor, Quercus ballota and Sedum sediforme showed the highest hydrophilic total antioxidant activity (H-TAA) and total phenols. Asparagus acutifolius, Allium ampeloprasum, Foeniculum vulgare and Malva sylvestris presented high levels of potassium, Malva and Asparagus are interesting due to their zinc content, and Urtica urens contains a high content of calcium. Sensory analysis indicated that fruits from Q. ballota could be considered very sweet and plants of Crithmum maritimum and Oxalis pes-caprae are very acidic. Moreover, testers highlighted the salty taste of C. maritimum. Mesembryanthemum nodiflorum and Mesembryanthemum cristalinum, the spicy taste of A. ampeloprasum, and the aroma of F. vulgare. Our results indicate that increased consumption of the investigated plant species could provide health benefits. Moreover, due to their sensorial properties, they could be used as new ingredients to improve the diversity in modern diet and highly creative cuisine.

Two cultivars ("Spirit”; and “Jubileo") of maize (Zea mays L.) were studied to compare their response to various levels of potassium (K⁺) (0.1, 1, and 6 mol/m³) and sodium chloride (NaCl) (0 and 50 mol/m³) in nutrient solutions with 16 h photoperiod, day/night temperature regime of 25/20°C, and a photon flux density of 380 nmol/m²/sec. ‘Spirit’ produced about 1.5 times more biomass than ‘Jubileo’ at 6 mol/m³ K⁺in the control treament, while at 0.1 mol/m³ K⁺ the growth of both cultivars was similar. Plant fresh weight was reduced by 20% in ‘Spirit’ and by 30% in ‘Jubileo’ with 50 mol/m³ NaCl and 6 mol/m³ K⁺. Growth reduction of maize plants by salinity was associated with an excessive accumulation of sodium (Na⁺) and chloride (Cl^‐) rather than an effect on water relations. The higher salt tolerance of ‘Spirit’ can be related to its greater capacity to exclude Na⁺ and Cl^‐ from the leaves and to maintain a higher K⁺/Na⁺ ratio. Increasing the K⁺ supply in the rooting media did not improve growth reduction imposed by the 50 mol/m³ NaCl treatment. ‘Jubileo’ had a lower turgor potential than ‘Spirit’. High concentrations of Na⁺ in the leaves may help to maintain turgor, but cannot substitute for K⁺ to give adequate growth of maize. The accumulation in leaf tissue of inorganic ions was sufficient for osmotic adjustment in both cultivars and no single organic solute appears to be important in this process.