Screening of Iraqi barley accessions under PEG-induced drought conditions

Among abiotic stresses, drought influences plant growth and productivity, stress responses depend on intensity genotype. The effects of simulated germination parameters were tested for tolerance sensitivity in 59 barley accessions from all regions Iraq phenotypic, physiological, biochemical associated with investigated. Stress treatments polyethylene glycol (PEG) reduced the rate dramatically delayed development seedlings. Significant changes physiological profiles observed. A smaller reduction water absorption seeds was observed across accessions, while characteristics except total flavonoid content increased increase deficiency most accessions. ABN tolerant accession, Black-Garmiyan drought-prone. relationships found between trait pairs, 24 significant associations under no stress, 39 correlations 10.25% PEG treatment, 60 20.50% treatment. According to key importance analysis, seed uptake, phenol content, soluble sugar catalase are classified as relative significance traits percentage, root shoot length conditions.