Volume 15, Issue 74 (vol. 15, no. 74 2026)
jispp 2026, 15(74): 145-170 |
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Dehghanpour Farashah S. Investigation of some morpho-physiological indices in the interaction between salicylic acid, sodium nitroprusside, and Azospirillum brasilense in rainfed wheat under field conditions. jispp 2026; 15 (74) : 7
URL: http://jispp.iut.ac.ir/article-1-2287-en.html
URL: http://jispp.iut.ac.ir/article-1-2287-en.html
Department of Agriculture, Payame Noor University, Tehran, Iran , sdfarashah@pnu.ac.ir
Abstract: (175 Views)
In the present study, the pretreatment of Azospirillum brasilense at a concentration of 500 μg/mL as one of the important plant growth-promoting bacteria individually with salicylic acid (SA) and sodium nitroprusside (SNP) as important anti-stress compounds at three concentrations of 50, 100, and 150 μg/mL under rainfed conditions on wheat cultivar Azar 2 under field conditions was investigated. The treatment of wheat individually with the aforementioned bacteria was considered a positive control, and the treatment of wheat seeds with sterile distilled water was considered a negative control. The experiments were conducted in a randomized complete block design with three replications in two crop years, 1402 and 1403, and the results of applying the treatments on some growth and physiological indices of wheat cultivar Azar 2, including shoot length, root length, plant sodium and nitrogen content, and plant relative water content percentage, were examined in three stages, including the first, second, and third weeks after the emergence of the first wheat spike. The results of this study showed that the single treatment of A. brasilense at three studied times led to an increase in all morpho-physiological indices in rainfed wheat cultivar Azar 2. In all bacterial treatments with SA and SNP, we witnessed an increase in the content of the studied indices in the first to third weeks compared to the positive and negative control treatments. The highest content of the studied compounds was observed in high concentrations of 150 μg/μl of SA and SNP from the first to the third week of the study. A comparison of treatments showed that the application of A. brasilense alone and in combination with SA and SNP resulted in an increase in the studied indices under dryland conditions.
Article number: 7
Keywords: Azar 2, Defense enzymes, Sodium, Total soluble proteins, Total soluble carbohydrates, Nitrogen
Type of Study: Research |
Subject:
Droughts Stress
Received: 2025/12/14 | Accepted: 2026/05/14 | Published: 2026/10/31
Received: 2025/12/14 | Accepted: 2026/05/14 | Published: 2026/10/31
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