中文摘要：

目的：研究干旱胁迫下甘草苷与脱落酸含量的变化,分析二者相关关系。方法：以人工培育甘草Glycyrrhiza uralensis Fisch.为材料,按照外源钙叶面喷施浓度、喷施季节与干旱胁迫程度3因素3水平设计正交试验处理,检测不同试验处理下的甘草苷与脱落酸含量变化,分析各试验因素对甘草苷、脱落酸含量变化的影响,以及两者含量间的相关性。结果：干旱胁迫对甘草苷和脱落酸均具有显著影响,且二者含量间具有显著的正相关。结论：干旱胁迫下甘草苷的合成积累,与抗旱信号传导物质脱落酸的合成密切相关。

英文摘要：

Objective： To study the effect of drought stress on the contents of liquiritin and abscisic acid,and analyze the correlation between liquiritin and abscisic acid.Methods： To cultivate Glycyrrhiza uralensis Fisch.as experiment materials according to 3 factors,3 level orthogonal experiment design： spraying concentration of exogenous calcium,the spraying season,and drought stress.The content of the liquiritin and abscisic acid were detected,the effects of the 3 factors on change of the contents of them,and the correlation between them were analyzed.Results： The drought stress had a very significant impact on liquiritin and abscisic acid,and there was a very significant positive correlation between liquiritin and abscisic acid.Conclusion： The synthesis and accumulation of liquiritin in Glycyrrhiza uralensis Fisch.under drought stress was closely related to the synthesis of drought-resistant signal transduction material-abscisic acid.