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用不同浓度甜菜碱溶液对６个基因型小麦进行浸种和干旱后复水的试验，以幼苗反复干旱存活率高低作为幼苗抗旱性强弱的指标。结果表明，在第一次干旱后用５ｍｍｏｌ／Ｌ的甜菜碱溶液复水会明显提高小麦幼苗的相对含水量和抗旱性。基因型×处理的交互作用结果表明，不同基因型小麦对外源甜菜碱作用的反应有差异，用５ｍｍｏｌ／Ｌ和１５ｍｍｏｌ／Ｌ的甜菜碱溶液进行复水，会显著提高鲁麦１４幼苗的相对含水量和抗旱性。以较高浓度甜菜碱溶液（８０ｍｍｏｌ／Ｌ）浸种的小麦幼苗抗旱性差。
With different concentrations of betaine on six genotypes of wheat soaking and rehydration after drought test, repeated seedling drought survival rate as an indicator of seedling drought resistance. The results showed that rehydration of 5 mmol / L betaine solution after the first drought significantly increased the relative water content and drought resistance of wheat seedlings. The interaction of genotype × treatment showed that the response of different genotypes to exogenous betaine was different. Rehydration with 5 mmol / L and 15 mmol / L of betaine significantly increased the relative content of Water and drought resistance. Seedling soaked with higher concentration of betaine solution (80mmol / L) had poor drought resistance.