Evaluation of the Effects of Drought Stress and Salicylic Acid Spraying on some Agronomical and Physiological Traits in Cumin Ecotypes

Articles in Press

Document Type : Research Paper

Author

Assistant Professor, Department of Agriculture, Payame Noor University, Tehran, Iran

10.22034/saps.2025.63225.3272

Abstract

Objectives: Drought stress is one of the limiting factors for crop production. Salicylic acid can increase stress resistance and also improve plant growth and yield. The aim of this study was to investigate the effect of salicylic acid application on agronomical and physiological characteristics of cumin (Cuminum cyminum L.) ecotypes under drought stress conditions.
Materials and Methods: This experiment was conducted as split-plot factorial experiment based on randomized complete block design with three replications during 2023 in Abarkouh city. Experimental factors included three levels of drought stress (non-stress, mild and severe stress), two level of salicylic acid spraying (0 and 2 mM) and six cumin ecotypes (Ardakan, Bafgh, Abadeh, Kerman, Isfahan and Semirom).
Results: The highest value of number of umbel per plant, number of seed per umbel, plant height and leaf relative water content and the lowest value of ion leakage were seen under non-stress condition with salicylic acid application. The highest value of grain yield was obtained under non-stress condition with salicylic acid application and the lowest value was obtained under severe drought stress and lack of application of salicylic acid and the most increase of this trait was observed under severe drought stress with salicylic acid application.
Conclusion: Based on the present research, the use of 2 mM salicylic acid is recommended to improve the growth and yield of cumin for decrease of negative effects of drought stress condition especially in Kerman and Ardakan ecotypes.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 22 July 2026

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