These suggested that active oxygen just is one of the symbols of plant defense response in wheat against powdery mildew, but it is not the decisive and the exclusive factor of resistance.

• 说明活性氧是植物抗病反应的一个指标，与细胞防卫反应的强度有关，但尚不是细胞抗病性唯一的、决定性的因素。