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fatty acid, hormone, sodium nitoprusside, sunflower
In this study, the effects of salt stress, sodium nitoprusside (SNP) and hormones applications on fatty acids concentrations of sunflower (Helianthus annuus L. cv. Tarsan-1018) plant leaf were investigated. Helianthus annuss L. cv. TARSAN – 1018 seeds were obtained through the Edirne Thrace Agricultural Research Institute, in Turkey. Seeds were irrigated with culture solution for 5 weeks. At the end of the fifth week salt, SNP and hormone applications were performed with foliar application for 72 hour. At the end of 72 hours samples were taken. Fatty acid composition of leaf tissues of sunflower (Helianthus annuus L. cv. Tarsan-1018) were determined by using gas chromatography. 300 mM salt application caused decrease concentrations of C16:0, C17:0, C18:1 and C18:3. 100 µM sodium nitoprusside has reduced the concentrations of C16:0, C17:0, C18:1. Hormone applications. adversely affected fatty acid concentrations. The results show that salt stress, sodium nitoprusside and hormone applications have negative effects on fatty acid concentrations in Tarsan-1018 sunflower leaf tissues.