Volume 14, Issue 70 (vol. 14, no. 70 2026)
2026, 14(70): 91-102 |
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Jafarzadeh Koshkenow H, Hakimzadeh Ardakani M A, Sodaeizadeh H, Esfandiari M. Hamideh Jafarzadeh Koshkenow, Mohammad Ali Hakimzadeh Ardakani*, Hamid Sodaeizadeh and Motahareh Esfandiari. Plant Process and Function 2026; 14 (70) : 9
URL: http://jispp.iut.ac.ir/article-1-1993-en.html
URL: http://jispp.iut.ac.ir/article-1-1993-en.html
Hamidehe Jafarzadeh Koshkenow1 
, Mohammad Ali Hakimzadeh Ardakani *2 , Hamid Sodaeizadeh1 , Motahareh Esfandiari1
, Mohammad Ali Hakimzadeh Ardakani *2 , Hamid Sodaeizadeh1 , Motahareh Esfandiari1
1- School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran
2- School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran ,Hakim@yazd.ac.ir
2- School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran ,
Abstract: (13 Views)
Biofertilizers, e.g., seaweed extract, have been effective in environmental and agricultural ecosystems. The effects of seaweed extract were studied on the physiological characteristics of peppermints irrigated with water at different salinity levels in a factorial experiment based on a randomized complete block design with four replications in the greenhouse of Yazd University in 2020. The experimental factors included salinity stress at four levels of 0, 2, 4, or 8 dS/m provided from a sodium chloride source and the foliar application of seaweed at four levels of 0, 1/1000, 2/1000, or 4/1000 provided from an Ascoclepe source. In examining morphological traits, results demonstrated that the fresh and dry weight of leaves, aerial parts, total fresh and dry biomass, and harvest index were significant at the P≤0.01 level. The use of seaweed at 4 ppt under stress-free conditions resulted in the highest weight of leaves, aerial, and total biomass. Based on the results, the salinity stress and the foliar application of the seaweed extract were significantly influential on chlorophyll a and b, total chlorophyll, and proline amino acid at the P≤0.01 level and on dissolved sugars at the P≤0.05 level. The comparison of means revealed that the highest relative water content was 65.8% related to the no-salinity conditions. The highest proline content was obtained from the salinity levels of 4 and 8 dS/m, exhibiting a 37.5% increase versus the control. Total chlorophyll exhibited a positive and significant correlation with other traits, including chlorophyll a, chlorophyll b, and carotenoids, with correlation coefficients of 0.61, 0.96, and 0.98, respectively. A negative and significant correlation was observed between proline and total chlorophyll, chlorophyll b, and relative humidity with correlation coefficients of 0.56, 0.52, and 0.62, respectively. The results generally showed that the application of seaweed extract at the rates of 2/1000 and 4/1000 to the plants exposed to high levels of salinity (4 and 8 dS/m) alleviated the adverse impacts of salinity by improving physiological traits, e.g., proline content.
Article number: 9
Type of Study: Research |
Subject:
Salt Stress
Received: 2023/12/5 | Accepted: 2024/07/2 | Published: 2026/02/28
Received: 2023/12/5 | Accepted: 2024/07/2 | Published: 2026/02/28
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