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Effect of auxin foliar application on seed yield and fatty acids composition of two safflower genotypes under late-season drought

Author

Listed:
  • Seyed Basir Mousavi

    (Department of Agronomy, College of Agriculture, Takestan Branch, Islamic Azad University, Takestan, Iran)

  • Saeed Sayfzadeh

    (Department of Agronomy, College of Agriculture, Takestan Branch, Islamic Azad University, Takestan, Iran)

  • Hamid Jabbari

    (Seed and Plant Improvement Institute, Agricultural Research, Education and Extension)

  • Seyed Alireza Valadabadi

    (Department of Agronomy, College of Agriculture, Takestan Branch, Islamic Azad University, Takestan, Iran)

  • Esmaeil Hadidi Masouleh

    (Department of Agronomy, College of Agriculture, Takestan Branch, Islamic Azad University, Takestan, Iran)

Abstract

To assess the response of two safflower genotypes to auxin foliar application under late-season drought stress using a factorial split-plot experiment with the randomised complete block design, a two-year experiment (2016-2017 and 2017-2018) was conducted in Iran. The watering regime as specified in two levels including, regular irrigation and drought stress in main plots and two safflower genotypes and auxin foliar application in two levels including non-foliar application (control) and auxin foliar application at a concentration of 30 ppm were categorised in subplots. Drought stress at the seed filling stage reduced the safflower seed and oil yield. Moreover, a significant drought-induced decrease in linoleic acid, palmitic acid and behenic acid content, as well as an increase in oleic acids, was observed in two safflower genotypes. Among two safflower genotypes, the early maturing genotype less affected by drought and Goldasht had higher seed yield than the Padideh by 814 kg/ha, respectively. Auxin foliar application alleviates the adverse effects of drought, which led to an 18% increase in seed yield and components. However, the auxin application had no effect on the safflower seed oil content but palmitic acid content was affected by auxin foliar application. Generally, safflower along with auxin application can be recommended to develop safflower cultivation in semi-arid areas.

Suggested Citation

  • Seyed Basir Mousavi & Saeed Sayfzadeh & Hamid Jabbari & Seyed Alireza Valadabadi & Esmaeil Hadidi Masouleh, 2022. "Effect of auxin foliar application on seed yield and fatty acids composition of two safflower genotypes under late-season drought," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 68(2), pages 82-88.
    • Handle: RePEc:caa:jnlpse:v:68:y:2022:i:2:id:329-2021-pse
    DOI: 10.17221/329/2021-PSE
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    References listed on IDEAS

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    1. Yousef Joshan & Behzad Sani & Hamid Jabbari & Hamid Mozafari & Payam Moaveni, 2019. "Effect of drought stress on oil content and fatty acids composition of some safflower genotypes," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(11), pages 563-567.
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    1. Marek Kołodziejczyk & Kamil Gwóźdź, 2022. "Effect of plant growth regulators on potato tuber yield and quality," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 68(8), pages 375-381.

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