Plant Soil Environ., 2019, 65(11):563-567 | DOI: 10.17221/591/2019-PSE

Effect of drought stress on oil content and fatty acids composition of some safflower genotypesOriginal Paper

Yousef Joshan1, Behzad Sani ORCID...*,1, Hamid Jabbari2, Hamid Mozafari1, Payam Moaveni1
1 Department of Agronomy, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran
2 Seedand Plant Improvement Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran

To assess the response of promising safflower genotypes to late-season drought stress in delayed planting conditions, an experiment was conducted in two years (2016-2017 and 2017-2018) in Iran. The irrigation regime was specified in two levels, including normal irrigation and irrigation cut off in the seed filling stage in main plots, and five safflower genotypes, including Soffe, Goldasht, Golmehr, Padideh, and Parnian were categorized in subplots. Applied drought stress significantly reduced the seed yield and yield components of all genotypes, which accompanied with a substantial decrease in oil content and oil yield of all genotypes. However, the highest seed and oil yield in drought stress conditions obtained in the Parnian genotype by value 2338 and 561 kg/ha, respectively. Moreover, a significant drought-induced increase in palmitic, stearic, and oleic acids, as well as a decrease in linoleic acid content, was observed in all genotypes. Parnian genotype with high unsaturated fatty acids content (90.9%) and the minimum amount of saturated fatty acids (8.7%) might be a promising genotype to starting a formal crop improvement program to achieve more drought-tolerant safflower genotype.

Keywords: Carthamus tinctorius L.; harvest index; oilseed crop; semi-arid ecosystem; water stress

Published: November 30, 2019  Show citation

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Joshan Y, Sani B, Jabbari H, Mozafari H, Moaveni P. Effect of drought stress on oil content and fatty acids composition of some safflower genotypes. Plant Soil Environ. 2019;65(11):563-567. doi: 10.17221/591/2019-PSE.
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