Effect of crude toxin produced by Fusarium moniliforme on cell membrane of maize root

In order to reveal the pathogenic mechanism of toxin produced by Fusarium moniliforme to maize root,the maize root were treated by curde toxin and membrane permeability,content of MDA and content of soluble sugar.The result showed that the tolerance of resistant variety to toxin was higer than that of susceptible variety,refleted in that membrane permeability and MDA content of resistant variety were lowwer than that of susceptible variety,but the content of soluble sugar of resistant variety was higher.The correlation of these tree indexes revealed in resistant variety was higher than that in susceptible variety.The difference of tolence to toxin in restistant and susceptibel variety would built a basis for screening resistant varieties by toxin.