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March 29, 2026Open Access

Variability of drought stress responses among barley genotypes and the impact of biologicals on drought stress tolerance

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Authors

VTVeronic TöpferJulius Kühn-Institut

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Implication

Investigates drought stress responses in barley genotypes, revealing the role of biologicals in enhancing tolerance.

Key Points

  • This research aims to identify traits associated with drought stress tolerance and evaluate the impact of biologicals on barley genotypes.
  • Screened eleven barley genotypes for root behavior under drought stress using polyethylene glycol (PEG) in a hydroponic system.
  • Classified 40 barley genotypes into drought stress tolerance groups based on their performance in greenhouse experiments.
  • Selected ten genotypes for further field investigations to validate trait performances and inter-relationships.
  • Tested four biologicals for their effects on drought stress response at molecular, physiological, yield, and quality levels.
  • PEG treatment increased root diameter compared to control.
  • Drought-tolerant genotypes showed higher grain biomass and water uptake during recovery.
  • Significant positive correlations were found for yield-related traits between greenhouse and field conditions.
  • Proline was negatively correlated with grain biomass, challenging its role in drought tolerance.
  • Biologicals significantly impacted yield, showing stronger effects in controlled environments than field conditions.

Cite This Study

Veronic Töpfer (2026) studied this question.

synapsesocial.com/papers/69c8c2fcde0f0f753b39d7d5https://doi.org/10.5073/20260325-083433-0
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