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】温光型雄不育小麦Ｃ４９Ｓ不育和可育花药ＳＯＤ活性随发育进程而下降，后期稍有升高，不育花药ＳＯＤ活性比可育花药下降更为剧烈，特别是在减数分裂到小孢子时期，不育花药ＳＯＤ活性下降百分率是可育花药的４．３５倍。减数分裂期不育花药的ＳＯＤ活性高于可育花药，但３核期低于可育花药。此外，不育花药发育早期ＭＤＡ含量高于可育花药，表明不育花药的膜脂过氧化更为剧烈。Ｃ４９Ｓ花药败育与花药中ＳＯＤ活性的急剧下降以及膜脂过氧化的加剧有关。而且，ＳＯＤ活性下降最剧烈的减数分裂期就是花粉败育的关键时期
Compared with fertile anthers, the SOD activity of C49S sterile and fertile anthers of Wen Guang male-sterile wheat decreased with the progress of development and slightly increased at the later stage. The SOD activity of sterile anthers decreased more intensely than that of fertile anthers, especially at meiosis Microspore stage, sterile anthers SOD activity was 4.35 times the percentage of fertile anthers. The activity of SOD of meiotic anthers was higher than that of fertile anthers, but lower than that of fertile anthers. In addition, the content of MDA in sterile anthers was higher than that in fertile anthers, indicating that the lipid peroxidation of male sterile anthers is more severe. Anther abortion of C49S is related to the sharp decline of SOD activity in anther and the aggravation of membrane lipid peroxidation. Moreover, the most dramatic decline in SOD activity during the meiosis is a critical period for pollen abortion