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Abstract
Sweet olive (Osmanthus fragrans Lour.) is a shrub or small tree in the Oleaceae family with challenges in propagation, flowering, and aroma production. The cutting experiment evaluated the effects of Indole-3-butyric acid formulations, concentrations, and cutting types on cutting propagation. The results showed that semi-hardwood cutting treated with 3,100 mg/L Indole-3-butyric acid gel had the best propagation performance. The seed experiment evaluated the effects of nitrate sources, gibberellic acid concentrations, and scarification on seed germination. The results showed that mechanical scarification promoted radicle protrusion but also increased the risk of decay. The flowering and aroma propagation experiment assessed the effects of environmental stresses, durations, and flowering stages on physiological parameters and aroma emission. The results indicated that the bud-pedicle stage flowers under cold conditions for 14 days had the highest content of aroma-active compounds. These findings contribute to promoting Osmanthus fragrans propagation and aroma production in commercial production.