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试验结果表明，外源Ｈ２Ｏ２浓度低于０．４％时，对小麦种子萌发有促进作用；Ｈ２Ｏ２浓度超过０．４％时，则抑制种子萌发，其抑制程度随着Ｈ２Ｏ２浓度的增大而加强；Ｈ２Ｏ２对主胚根和胚芽的伸长均有抑制作用，并且对主胚根的抑制强于胚芽；低浓度（小于０．４％）Ｈ２Ｏ２能够促使侧生胚根的伸长，增加胚根数；叶片中ＰＯＤ活性和ＭＤＡ含量与Ｈ２Ｏ２浓度均存在密切的相关性。
The results showed that the exogenous H2O2 concentration of less than 0.4%, promote the germination of wheat seeds; H2O2 concentration over 0.4%, then the inhibition of seed germination, the inhibition increased with the increase of H2O2 concentration ; H2O2 inhibited the elongation of the main radicle and the germ, and inhibited the main radicle more than the germ. Low concentration (less than 0.4%) of H2O2 promoted the elongation of the lateral radicle and increased the radicle The leaf POD activity and MDA content were closely related to the concentration of H2O2.