Fig. 2From: Modulation of sunflower growth via regulation of antioxidants, oil content and gas exchange by arbuscular mycorrhizal fungi and quantum dot biochar under chromium stressEffect of treatments on plant height (A), stem diameter (B), head diameter (C), and number of leaves/plant (D) of sunflower cultivated under normal conditions (control) and chromium (Cr) toxicity, i.e., 150 mg Cr/ kg soil (150Cr) and 200 mg Cr/ kg soil (200Cr). Bars are means of 4 replicates ± SE. Treatments were compared using Fisher’s LSD; p ≤ 0.05. Different letters on the bars showed significant changes. AMF = Arbuscular mycorrhizae fungi; ZQDB = zinc quantum dot biocharBack to article page