不同抗病性大豆品种接种大豆灰斑病菌前后过氧化物酶同工酶及其活性的研究结果表明，抗病品种在接种前均缺少同工酶Ｃ３带，接种后出现同工酶Ｃ３带；感病品种在接种前后，只是同工酶活性发生变化，没有出现同工酶缺失或增加。接种前，抗病品种的过氧化物酶活性高于感病品种；接种后，抗感病品种过氧化物酶活性均增加，但抗病品种的活性仍高于感病品种。 The results of peroxidase isozymes and their activities before and after inoculation with solanoderma edodes showed that the resistant isolates lacked the isozyme C3 band before inoculation and the isozyme C3 band appeared after inoculation. Before and after the inoculation of susceptible varieties, only the isoenzyme activity changed, there was no deletion or increase of isoenzyme. Before inoculation, the peroxidase activity of resistant varieties was higher than that of susceptible varieties. After inoculation, the peroxidase activity of susceptible varieties increased, but the activity of resistant varieties was still higher than that of susceptible varieties.