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小麦种子中的游离脯氨酸、色氨酸和丝氨酸对萌发有不同的促进作用。干旱胁迫下，赤霉素（ＧＡ）和氯化钙（ＣａＣｌ２）＋ＧＡ浸种可增加萌发种子内这３种游离氨基酸的含量，有效缓解缺水对萌发的影响，ＣａＣｌ２浸种无明显效果。
Free proline, tryptophan and serine in wheat seeds have different promoting effects on germination. Under drought stress, soaking seeds with gibberellic acid (GA) and calcium chloride (CaCl2) + GA could increase the contents of these three kinds of free amino acids in germinating seeds and effectively alleviate the effect of water deficit on germination. Soaking seeds with CaCl2 had no obvious effect.