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Abstract
The present study was conducted in tissue culture laboratory of agric. bot. department, faculty of agric., Ain Shams university, during the period from march 2005 to may 2007 to study the effect of different concentrations of jasmonic acid (JA) at 10(-6) ,10(-5), 10(-4) M, boron (B) at 9.1 and 12.4 mg/1 and thier combinations on in vitro tuberization of two potato cultivars.