对小麦Ｔ型和Ｐ型细胞质雄性不育系及其保持系花药中ＳＯＤ活性、ＳＯＤ同工酶及脂质过氧化作用的研究结果表明，单核期不育系花药中的ＳＯＤ活性比保持系略低，ＳＯＤ同工酶带数与保持系相同。到二核期和三核期不育系花药中缺少一条ＳＯＤ同工酶带，ＳＯＤ活性也比保持系明显降低。不育系花药在三个发育时期的ＭＤＡ含量均明显高于保持系。同时发现在三核期不育系旗叶中减少一条ＳＯＤ同工酶带。体内活性氧清除能力降低及脂质过氧化作用加剧可能与花粉败育有关，二核期可能是花粉败育的一个关键时期。 The results of anthesis SOD activity, SOD isozymes and lipid peroxidation in T and P cytoplasmic male sterile lines and their maintainer anthers showed that the activity of SOD in anther of mononuclear stage was higher than that of maintainer line Slightly lower, SOD isozyme number and maintain the same line. To the two nuclear and trinuclear sterile anthers lack one of the SOD isozymes, SOD activity was significantly lower than the maintainer. The MDA content of anther in CMS was significantly higher than that of maintainer in three developmental stages. At the same time, it was found that one SOD isoenzyme band was reduced in the flag leaves of CMS lines. Decreased ROS and lipid peroxidation in vivo may be related to pollen abortion, which may be a critical period for pollen abortion.