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Physiological separation of cultivars tolerant and sensitive to salt stress of wheat (Triticum aestivum) in seedling stage by cluster analysis

Document Type : Research Paper

Authors

1 Associate Professor, Research Center for Geographical Sciences and Social Studies, Environmental Stress Studies Core, Hakim Sabzevari University, Iran.

2 Assistant Professor, Khorasan Razavi Agricultural Research Center, Iran.

3 MSC.Khorasan Razavi Agricultural Research Center, Iran.

Abstract

Introduction: Salinity stress is considered one of the most important stresses in arid regions and affects 20% of arable land around the world and is continuously increasing due to climate change and human activities. Frequent and continuous droughts in Iran and drought stress and subsequent water and soil salinity make the production of more crops in arid and semi-arid regions face increasing restrictions and this causes a decrease in quantitative and qualitative yield of plants in these areas have been. Methods: To investigate the effect of salinity stress on some physiological traits of different wheat cultivars, a factorial experiment was conducted in a completely randomized design with three replications in greenhouse of Payame Noor University of Sabzevar. In this experiment, 15 wheat cultivars were compared at three levels of salinity (0, 5 and 10 dSm). Root and stem dry weight, leaf relative water content, electrolyte leakage, chlorophyll a, b and total, soluble sugars and amino proline content were measured in different cultivars. Results: The results showed that salinity increased the dry weight of root and stem and decreased the chlorophyll concentration. In salt stress condition, the lowest amount of leaf relative water belonged to Gasgozien cultivar with 15.61% and the highest amount was Bam with 62.34%The Mihan and Bam cultivars had the highest levels of chlorophyll a and b. The highest content of relative water content, proline amino acid and soluble sugars was observed in Pishtaz, Bam and Mihan cultivars.

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References
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Applied Biology
Volume 37, Issue 3 - Serial Number 81
October 2024
Pages 1-10
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