中文摘要：

采用土壤盆栽试验与高效液相色谱法（HPLC）分析测试技术，研究了不同浓度Cd处理对大豆生长及叶片生长素（IAA）、赤霉素（GA3）、玉米素（Z）和脱落酸（ABA）含量变化的影响。结果表明，当Cd处理浓度≤0.50mg·kg^-1时，对大豆株高及幼苗期地上部生物产量无明显影响，Cd浓度≥2.50mg·kg^-1时，则表现明显的抑制作用。Cd浓度≥0.50mg·kg^-1时，对大豆地下部及花荚期地上部生物产量即表现明显的抑制作用。Cd胁迫抑制大豆叶片IAA和Z的合成，当Cd处理浓度为0.25mg·kg^-1时，大豆幼苗期和花荚期叶片IAA和Z含量分别为对照的43.1%、75.5%和60.6%、32.6%，Cd浓度升高，抑制作用加强。Cd胁迫对ABA的合成则表现明显的促进作用，当Cd处理浓度为2.50mg·kg^-1时，幼苗期和花荚期叶片ABA含量分别为对照的13.6倍和3.86倍。对GA3合成的影响则表现为低浓度下的促进作用和高浓度下的抑制作用，即当Cd处理浓度为0.25mg·kg^-1时，幼苗期和花荚期叶片GA3含量均高于对照，分别为对照的150.2%和109.7%，Cd浓度增至2.50mg·kg^-1时，其含量则分别为对照的36.4%和75.2%。大豆幼苗期和花荚期叶片ABA/IAA、ABA/GA3及ABA/Z与Cd处理浓度之间均达到了显著或极显著的相关性，表明Cd胁迫不仅影响植物激素的含量，同时也影响激素间的比例和平衡。

英文摘要：

Pot experiment was conducted to study the effects of different Cd concentrations on seedling growth and the contents of indoleacetic acid （IAA）, gibbrellins （GA3）, zeatin （Z） and abscisic acid （ABA） of Glycine max plant by high performance liquid chromatography （HPLC） analytical method. The results indicated that the plant height and aboveground biomass of seedlings were not affected significantly by the lower Cd concentrations（≤ 0.50 mg·kg^-1） but inhibited markedly at the higher Cd concentrations（≥ 2.50 mg·kg^-1）. However, at 0.50 mg·kg^-1 of Cd concentration, the biomass of aerial parts in blooming period and root biomass were inhibited significantly. Cd stress inhibited the synthesis of indoleacetic acid （IAA） and zeatin （Z） at 0.25 mg·kg^-1 of Cd concentration, and the contents of IAA and Z in leaves were 43.1% and 75.5% and 60.6% and 32.6% of that of the control in seedling and blooming period respectively. Cd could stimulate the synthesis of abscisic acid （ABA）, when Cd concentration was 2.50 mg·kg^-1, the contents of ABA in leaves in seedling and blooming period were 13.6 times and 3.86 times of that of the control respectively. The synthesis Of gibbrellins （GA3） was stimulated at the lower Cd concentration（≤0.25 mg·kg^-1） but was inhibited at the higher Cd concentration. There were significant relationships between Cd concentrations and the ratios of ABA/ IAA, ABA/GA3 and ABA/Z, indicating that Cd stress influenced not only the content of phytohormones but also their ratios and balance.