Fig. 3

Total soluble sugars, protein and free amino acids content in root and shoot samples of barley plants subjected to seed biopriming with two genotypes of Trichoderma harzianum (TW and TM) under three different levels of drought stress: control (0% PEG 6000), moderate drought stress (5% PEG 6000), and severe drought stress (10% PEG 6000). Columns represent mean ± SE based on three replicates. Means denoted by different letters indicate a significant difference at p ≤ 0.05, determined by Duncan’s multiple range test.