2017, Vol. 5 Issue 3, Part A
The impact of Nitrokara and salicylic acid on proline content and essential oil composition of coriander under different water supply
AUTHOR(S): Farhood Yeganehpoor, Saeid Zehtab-Salmasi, Kazem Ghassemi-Golezani, Jalil Shafagh-Kolvanagh and Soheila Dastborhan
ABSTRACT:Water stress causes many physiological and biochemical changes in plants. Salicylic acid and bio-fertilizers may enhance the plant tolerance to environmental stresses. Thus, two field experiments were arranged as split-plot factorial based on RCB design with three replications in 2014 and 2015 to evaluate the effects of chemical and biological nitrogen fertilizers and salicylic acid on yield, proline and essential oil contents and essential oil composition of coriander seeds under different irrigation treatments in Kermanshah province, Iran. Treatments were 3 levels of water supply (irrigation after 60, 90 and 120 mm evaporation from class A pan), 4 levels of nitrogen fertilizer (control,100 kgha-1 urea, Nitrokara (as bio-fertilizer) and 50% urea + Nitrokara) and foliar application of salicylic acid (0 and 1 mM). Irrigation treatments and combination of nitrogen fertilizer and salicylic acid were located in the main and sub plots, respectively. Water deficit caused a significant reduction in seed and essential oil yields and a significant increment in leaf proline and seed essential oil contents. Application of salicylic acid and nitrogen fertilizers, especially 50% urea and Nitrokara, hadanadditiveeffecton content of proline and essential oil, and yield of seed and essential oil under all irrigation treatments. Chemical compositions of essential oil of coriander seeds were determined by gas chromatography mass spectroscopy (GC/MS) and forty two components were identified. The main constituent of seed essential oil under all treatments was Linalool. Decreasing water availability led to a slight increment in concentration of all major compounds of essential oil, except g-terpinene. Application of SA and nitrogen fertilizers (especially 50% urea + Nitrokara) improved essential oil quality by increasing the percentage of linalool and g-terpinene. Therefore, salicylic acid treatment alleviates the negative effects of water stress and can be recommended for improving field performance of coriander under different water availabilities when applied with bio-fertilizers.
Pages: 32-40 | 594 Views 50 Downloads
How to cite this article:
Farhood Yeganehpoor, Saeid Zehtab-Salmasi, Kazem Ghassemi-Golezani, Jalil Shafagh-Kolvanagh and Soheila Dastborhan. The impact of Nitrokara and salicylic acid on proline content and essential oil composition of coriander under different water supply. 2017; 5(3): 32-40.