Preliminary Research on Inducing Resistance in Potato Tuber Against Early Blight with 3 Chemicals

doi:10.3321/j.issn:1000-7091.2007.01.035

Abstract

Abstract: Phenol, benzoic acid, and paraaminobenzoic acid, as the elicitors, were evaluated in lab of their efficiences to induce potato tuber against early blight, and the change of resistance related enzymes were investgated in induced potato tuber. The results indicated that 3 chemicals could greatly enhance resistance of potato tuber to early blight at low concentrations. Protection rates induced by phenol (1 mmol/L), benzoic acid (0.01 mmol/L), and paraaminobenzoic acid (5 mmol/L) were 43.21%, 40.72%, and 28.75%, respectively. There were marked diffrences at 0.01 level comprison with control. The activities of peroxidase (POD) and phenylalanine (PAL) related to systemic resistance increased great extent in induced tubers comparing with the control. It seemed that the 3 chemicals could enhance resistance of tuber via activating POD and PAL.

Key words: Chemicals, Potato, POD, PAL

CLC Number:

S532.01

GAO Dong-ting, JIANG Ji-zhi, LIU Yang, WANG Feng-chun, FAN Jiye, BIAN Rui-huan. Preliminary Research on Inducing Resistance in Potato Tuber Against Early Blight with 3 Chemicals[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(1): 148-151. doi: 10.3321/j.issn:1000-7091.2007.01.035.

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