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不同浓度ＪＭ （茉莉酸甲酯） 处理明显提高干旱条件下盆栽‘首红’苹果幼树茎粗， 促进地上部和根的干物质积累， 显著提高叶片ＲＷＣ、游离脯氨酸含量和光合速率， 对叶片气孔导度和蒸腾速率有不同程度的作用。ＪＭ３０ 和７０ ｍｇ／Ｌ 处理显著提高中度干旱条件下叶片ＳＯＤ 活性， 降低质膜透性、ＭＤＡ 含量和叶细胞饱和脂肪酸含量， 提高不饱和脂肪酸含量和不饱和脂肪酸指数。认为ＪＭ 处理在一定程度上提高了苹果幼树的抗旱性。
The treatment with different concentrations of JM (methyl jasmonate) significantly increased the stem diameter of the first red apple seedlings under drought condition, promoted the accumulation of dry matter in shoots and roots, significantly increased RWC, free proline content and photosynthetic rate, Stomatal conductance and transpiration rate of leaves have different degrees of effect. JM30 and 70 mg / L significantly increased SOD activity, decreased membrane permeability, MDA content and saturated fatty acid content in leaf cells, and increased unsaturated fatty acid content and unsaturated fatty acid index under moderate and drought conditions. JM treatment to a certain extent, increased the drought resistance of young apple trees.