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Why is resistance to salty soil valuable in crop plants?
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Plant breeding
Triticale is a hybrid of rye and wheat.
Resistance to salty soil is a critical trait in plant breeding because excess salinity is a major factor limiting agricultural productivity worldwide.12
When salt concentrations in the soil are too high, they create significant challenges for crop health:
- Dehydration: Plants typically absorb water through their roots via osmosis. High salt levels in the soil reverse this process, causing water to flow out of the roots and leading to plant dehydration.13
- Nutrient Uptake: Salinity inhibits the plant's ability to take up essential nutrients, such as nitrogen, which are necessary for growth.1
- Soil Degradation: In addition to direct harm to plants, high levels of sodium can alter soil structure, making it sticky when wet and hard when dry, which renders the soil nearly impervious to water and root penetration.3
Because irrigation often introduces salts that accumulate as water evaporates, developing salt-tolerant varieties is essential for maintaining global food security and reclaiming land that would otherwise become barren.243