Salinity effects on plant tissue nutritional status as well as growth and physiological factors in some cultivars and interspecies hybrids of grape

Document Type : Full Paper

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Scientific board member

Abstract

Selection and use of tolerant grapevine as rootstock or own-rooted vines and finding indexes for screening of resistant genotypes have especial importance. To identify the salt tolerant grapevine genotypes, effects of NaCl concentrations (0, 50, 100 and 150 mM) on root length, root and shoot dry weight, prolin, total soluble solid, RWC, level of salt injury, leaf concentration of K, Na, Cl and NO3 of ‘Rasha’, ‘Rishbaba Qermez’, ‘At ouzum’, and ‘Sayani’ as well as two inter- species hybrids was investigated in factorial experiment based on RCBD design. Results showed that increasing NaCl concentration caused a significant reduction in shoot growth, the average root and shoot dry weight and RWC of all genotypes. Increasing NaCl concentration caused a significant production of prolin and soluble sugar in some genotypes. The lowest Cl and Na accumulation was obtained in leaves of H6 and then in Sayani and Rasha, respectively. In high salt concentration, leaf K and No3 contents were decreased. The lowest salinity symptoms were observed in leaves and shoots of two hybrids as well as in ‘Rasha’. In 150 Mm NaCl, only hybrid H6 showed medium degree of tolerance. Based on Na and Cl accumulation in leaves, salt damage symptoms and vegetative growth rate, ‘Rasha’ cultivar and H6 hybrid showed logical salt tolerance.

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