【摘要】 在人工老化条件下（ＲＨ７５．４％，４５℃），随着劣变加剧，大豆种子的膜透性增加，脂质过氧化产物ＭＤＡ含量升高，Ｈ２Ｏ２和浓度升高，而ＳＯＤ和ＣＡＴ活性则明显下降．由此可以认为．在人工老化过种中，大豆种子内Ｈ２Ｏ２和的消除系统产生障碍．Ｈ２Ｏ２和积累，造成膜脂质的过氧化作用加剧更多还原

【Abstract】 In this paper, the membrane lipid peroxidation of soybean seed was studied, Inresponse to the artificial aging, membrane permeability, contents of malondealdehyde and O2increased. on the other hand, the activity of the superoxide dis mutase decteased. Therefare, it is reasonable to suggest that the membrane lipid of the soybean seed was peroxidized seriously by and it may would play an important role in the artificial senecence of soybean seed.更多还原