Resistance in Potato Against Early Blight and Its Mechanism Induced by Chemical Substances

doi:10.3321/j.issn:1000-7091.2006.02.027

Abstract

Abstract: Oxalic acid,potassium chloride (KCl),ferrous sulfate (FeSO₄) and dipotassium hydrogen phosphate (k₂HPO₄) were used to induce resistance in potato tubers(Solarium tuberosum L.) against early blight,respectively.The results were as follows:oxalic acid,KCl,and FeSO₄ were effective elicitors of inducing resistance in potato tubers against early blight,but k₂HPO₄ could not do that.Preliminary research on the induced resistance mechanisms showed that the activities of POD,PPO,PAL in potato tubers were enhanced by oxalic acid,KCl,and FeSO₄,while they couldn't inhibit the growth of Alternaria solani in vitro.

Key words: Chemical, elicitor, Potato, early, blight POD, PAL PPO

CLC Number:

S436.32

LIU Yang, JIANG Ji-zhi, YANG Fa-mao, SONG Hai-liang. Resistance in Potato Against Early Blight and Its Mechanism Induced by Chemical Substances[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(2): 113-117. doi: 10.3321/j.issn:1000-7091.2006.02.027.

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