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Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Biyoloji Bölümü, Otu Borlu, Hande, Çakan, Halil, Düzenli, Sema, Düzeni, Sema |
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Introduction Salinity is one of the major environmental problems of plant production that restricts germination and growth, inhibits photosynthesis and other biochemical reactions. Durum wheat is an important crop which mainly used as primary food product in lots of regions and usually comes across salt stress. In this study, it is aimed to investigate the effects of salinity on seven different durum wheat cultivars’ (Triticum turgidum subsp. durum cvs Harran 95, Sarıçanak 98, Svevo, Tüten 2002, Turabi, Clavdio and Ege 88) water status, membrane integrity, proline and chlorophyll contents. Material and Methods For the experiment, the seeds of cultivars were germinated in perlite and transferred to nutrient solution. Salt application (150 mM NaCl) was started at two-leafed stage. Plants were harvested after nine days of salt application. Chlorophyll content (as SPAD value), relative water and proline content, membrane integrity (malondialdehyde content and electron leakage) data was evaluated with LSD test. Findings Salinity decreased chlorophyll content in all cultivars but these changes weren’t found significant as statistically. Salt stress affected relative water content significantly in Sarıçanak 98 ve Svevo cultivars. Proline content, which is an indicator of salt stress, was increased by salinity in Sarıçanak-98, Svevo, Tüten 2002 and Ege 88 cultivars. Malondialdehyde content induced by salinity in Sarıçanak-98, Turabi and Tüten 2002 cultivars and these results showed disruption on membrane integrity. Another parameter of membrane stability, electron leakage increased in Tüten 2002, too. Results and Discussion The results of this experiment shows that salt stress in different durum wheat cultivars caused different salinity damages. Such studies helped to select durum wheat cultivar cultivation in the fields of high salinity. In this study, Tüten 2002 was determined the most sensitive and Clavdio was determined the most resistant durum cultivar to salt stress. |
