Screening and evaluation of wild accessions of Ae. tauschii using morphophysiological traits on salinity stress

Document Type : Research Paper

Authors

1 Genetics and Plant Breeding, Imam Khomeini International University, Qazvin, Iran

2 Department of Genetics and Plant Breeding, Imam Khomeini International University, Qazvin, Iran

3 Research Center of Medicinal Plants, Shahed University, Tehran

10.22059/ijfcs.2024.372153.655063

Abstract

The aim of this study was to investigate the effect of salinity stress on changes in morpho-physiological traits of 109 accessions of Aegilops tauschii collected from different regions of the world, along with two check cultivars, Arg (salinity tolerant) and Darya (salinity sensitive). For this purpose, a factorial experiment with two levels of salinity (zero and 300 mM NaCl) as the first factor and 111 genotypes (109 accessions and two check cultivars) as the second factor was conducted using a randomized complete block design with three replications. After salt stress treatment, some morpho-physiological traits were measured and the results were analyzed. Analysis of variance results showed that the studied accessions differed significally from each other (p≤0.01) in terms of all traits (shoot and root sodium, shoot and root potassium, shoot potassium to sodium ratio, leaf chlorophyll content, shoot fresh and dry biomass, and root fresh and dry biomass), except for the root potassium to sodium ratio. The effect of salinity stress on the aforementioned traits was also significant (p ≤ 0.01) except for root potassium. In total, some accessions collected from Iran, Georgia, Kosovo, Azerbaijan, and Turkmenistan showed acceptable performance in terms of the studied traits under salt stress conditions, when compared to the resistant check cultivar Arg. In addition, the dendrogram obtained from the cluster analysis and the survey of subgroup averages showed that the accessions collected from Iran, Georgia, Kosovo, Azerbaijan, and Turkmenistan had greater resistance and tolerance to salinity stress.

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Iranian Journal of Field Crop Science
Volume 55, Issue 3
October 2024
Pages 211-227

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History

  • Receive Date: 04 February 2024
  • Revise Date: 28 February 2024
  • Accept Date: 28 April 2024
  • Publish Date: 22 September 2024

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