Integrated evaluation and screening of salt-tolerant wheat germplasm and indices.
Xu W, Liu X, Zhang Z, Zhu J, Han R
Crop Improvement
Roughly 20% of irrigated farmland worldwide is already too salty to grow crops reliably — and that share is growing — so finding wheat that can handle it directly protects the grain that makes your bread, pasta, and cereal.
Researchers tested 30 wheat varieties in salty conditions and found that measuring just three things in young seedlings — a specific stress-fighting enzyme, protein content, and potassium levels — can reliably predict which plants will still thrive as fully grown crops. They identified seven wheat varieties that excelled in salty soil at every growth stage and used a computer learning tool to make future screening faster. The team also looked at which genes switch on in tolerant plants, revealing that the wheat's natural antioxidant defenses and stress-signaling networks are the key to surviving salty soil.
Key Findings
7 of 30 tested wheat accessions showed high salt tolerance at both the seedling and adult stages, out of 417 originally screened American accessions.
Three seedling-stage markers — superoxide dismutase activity, soluble protein content, and potassium levels — were the strongest predictors of overall salt tolerance.
A Random Forest machine learning model was successfully built to predict salt-resilient wheat at the seedling stage, with genes in the redox, MAPK, and plant-pathogen interaction pathways driving salt resistance.
chevron_right Technical Summary
Scientists screened dozens of wheat varieties for salt tolerance and identified seven standout accessions that perform well from seedling to harvest. They also pinpointed three easy-to-measure biological markers and built a machine learning model to fast-track the search for salt-resilient wheat.
Abstract Preview
Successful evaluation and screening of salt-tolerant wheat germplasm at different stages are of great importance for breeding resilient crops. In the present study, we tested 30 wheat entries out o...
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