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Salt increases the nutritional content of cauliflower
(Int Soc Horticultural Science, 2019) Dere, S.; Dasgan, H. Y.; Kafkas, N. E.; Erturk, H. B.
It is known that intermediate salt stress may increase the taste and nutritional content of some horticultural crops. Some antioxidants, vitamins, carotenoids, mineral content and total soluble solids of the edible parts of the crops can be increased. In this study, we have evaluated the effect of 50 mM NaCl on total soluble solids (brix), dry matter, phenols, flavonoids, organic acids, L-ascorbic acid, sugars and minerals concentration of cauliflower heads. Plants were grown in cocopeat slabs and 50 mM NaCl was applied with the nutrient solution during the autumn-winter season in an open soilless system in the greenhouse in Mediterranean climate. Salt stress has significantly increased flavonoids, organic acids, phenols, L-ascorbic acid, succunic acid, dry matter ratio, total soluble solids and EC. However in 50 mM salt, total sugars and individual sugars; glucose, fructose, sucrose were decreased. Mineral nutrient concentration of the cauliflower head were increased for K, Mg, N, while Fe and Zn were decreased. The positive effect of 50 mM salinity on qualitative and nutritional traits of cauliflower head has been indicated.