The salt (NaCl) tolerance of 8 barley genotypes was investigated. Plants were grown hyroponically in Hoagland solution at 5 different NaCl concentrations. Germination percentage, shoot and root length, shoot and root dry weight, salt tolerance percentage and K and Na concentrations in the shoots and roots were evaluated. | Turk J Agric For 27 (2003) 253-260 © TÜB‹TAK Determination of the Salt Tolerance of Some Barley Genotypes and the Characteristics Affecting Tolerance Seydi Ahmet BA⁄CI* Selçuk University, Sarayönü Vocational School of Higher Education, Sarayönü, Konya - TURKEY Hasan EK‹Z, Ahmet YILMAZ Bahri Da¤dafl International Winter Cereal Research Center, . 125, Konya - TURKEY Received: Abstract: The salt (NaCl) tolerance of 8 barley genotypes was investigated. Plants were grown hyroponically in Hoagland solution at 5 different NaCl concentrations. Germination percentage, shoot and root length, shoot and root dry weight, salt tolerance percentage, and K and Na concentrations in the shoots and roots were evaluated. Salt tolerance percentage, which is calculated from the germination percentage and dry weight production, was the most reliable criterion. On the other hand, with some exceptions, high K concentration and K/Na ratios were other potential criteria. Erginel-90 and WBELT-10 showed high levels of tolerance; and Anadolu-86, K›ral-97 and Karatay-94 showed medium levels. Tokak-157/37 and Hamidiye-85 were the most susceptible genotypes to NaCl. Key Words: barley (Hordeum vulgare L.), salinity, NaCl, tolerance Baz› Arpa Genotiplerinin Tuza Toleranslar›n›n ve Tolerans› Etkileyen Özelliklerin Belirlenmesi Özet: Bu çal›flmada Hoagland Çözeltisi ve NaCl kullan›larak befl farkl› tuz konsantrasyonunda 8 adet arpa genotipinin tuza toleranslar› incelenmifltir. De¤erlendirmeler çimlenme yüzdesi, sap ve kök uzunluklar› ile kuru a¤›rl›klar›, tuza tolerans yüzdesi, K ve Na konsantrasyonlar› üzerinde yap›lm›flt›r. Çimlenme yüzdesi ve kuru a¤›rl›¤›n bir sonucu olan tuza tolerans yüzdesi en güvenilir kriter olarak belirlenmifltir. Yüksek K konsantrasyonu ve K/Na oran›n›n baz› istisnalarla birlikte di¤er potansiyel seleksiyon kriterleri oldu¤u görülmüfltür. Erginel-90 ve WBELT-10 yüksek, Anadolu-86, K›ral-97 ve Karatay-94 orta seviyede toleransl›, Tokak-157/37 .
