茉莉酸甲酯能够提高植物的抗逆境胁迫能力，但在对香稻香气物质2-乙酰基-1-吡咯啉（2-AP）的影响研究还鲜有报道。以香稻品种象牙香占为试验材料，设置茉莉酸甲酯3种喷施浓度（0.25、0.50和1.00 mmol/L），研究苗期喷施对香稻幼苗2-AP合成与累积、香气前体物质含量、香气相关酶活性、香气相关基因表达量调控、抗性酶活性变化和秧苗素质的影响。结果表明，与对照（CK）相比，喷施适当的茉莉酸甲酯浓度（0.50~1.00 mmol/L），香稻幼苗2-AP含量增加，香气合成前体物质1-吡咯啉、丙酮醛和1-吡咯啉-5-羧酸（P5C）含量提高，二胺氧化酶2基因（DAO4）、鸟氨酸转氨酶基因（OAT）和脯氨酸脱氢酶基因（ProDH）表达量提升。茉莉酸甲酯处理还提高了香稻秧苗素质，增加了抗性酶活性，提高了抗氧化能力。适度的茉莉酸甲酯能提高香稻2-AP含量和秧苗素质，归因于相关酶活性和基因表达量的提高。

Methyl jasmonate is known to enhance plant stress resistance, however, its specific effects on the accumulation of 2-acetyl-1-pyrroline (2-AP) in fragrant rice have not been extensively investigated. In this experiment, Xiangyaxiangzhan, a fragrant rice variety, was selected as the test material. Three concentrations of methyl jasmonate (0.25, 0.50, and 1.00 mmol/L) were applied during the seedling stage to examine the impact on the synthesis and accumulation of 2-AP, as well as the levels of aroma precursors, activity of aroma-related enzymes, regulation of aroma-related gene expression, changes in enzyme activities related to stress resistance, and seedling quality. The results showed that compared to the control (CK), spraying appropriate concentrations of methyl jasmonate (0.50-1.00 mmol/L) increased expression of DAO4, OAT, and ProDH in fragrant rice seedlings, accompanied by an elevation in 2-AP content. Furthermore, spraying methyl jasmonate increased the levels of aroma synthesis precursors including 1-pyrroline, methylglyoxal, and P5C. This resulted in an improvement in the quality of fragrant rice seedlings, an increase in the activity of stress-resistant enzymes, and enhanced antioxidant capacity.