biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 46:263-268, 2003 | DOI: 10.1023/A:1022862929881

Effects of Paclobutrazol on Response of Two Barley Cultivars to Salt Stress

A.D. Özmen1, F. Özdemír1, I. Türkan1
1 Department of Biology, Science Faculty, Ege University, Bornova-Izmir, Turkey

The seeds of two barley (Hordeum vulgare L.) cultivars (a drought resistant cv. Tokak-137/57 and a drought sensitive cv. Erginel-90) were imbibed either in distilled water (control) or in a solution containing 40 mg dm-3 paclobutrazol (PBZ) and air dried. Seeds were germinated and grown in a glasshouse for 21 d and seedlings were subjected to salt stress by treating them with 100 and 200 mM NaCl for 12 d. The height of shoots was significantly decreased and root length was increased in PBZ-treated plants prior and after NaCl stress for 12 d leading to an increase in root to shoot ratio. Leaf chlorophyll and carotenoid contents in PBZ treated plants were increased in controls and especially in plants subjected to salt stress. PBZ induced increase in superoxide dismutase (SOD) activities was higher in cv. Tokak-157/37, than in cv. Erginel-90. However, an increase in SOD activity was not accompanied by an increase in peroxidase activity.

Keywords: Hordeum vulgare; superoxide dismutase; peroxidase
Subjects: barley, cultivar differences, salt stress; carotenoids, salt stress; chlorophyll, salt stress; cultivar differences; growth analysis, biomass production; Hordeum vulgare; paclobutrazol; peroxidase; salt stress, cultivar differences, paclobutrazol; superoxide dismutase

Prepublished online: March 1, 2003; Published: September 1, 2003  Show citation

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Özmen, A.D., Özdemír, F., & Türkan, I. (2003). Effects of Paclobutrazol on Response of Two Barley Cultivars to Salt Stress. Biologia plantarum, 46(2), 263-268. doi: 10.1023/A:1022862929881
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