This invention relates to an agent for inducing a callus comprising a compound represented by Formula (I) or a hydrolysis product of an amide bond thereof:wherein Ar1 represents phenyl substituted with substituent or substituents selected from alkoxy and methylenedioxy； Ar2 represents phenyl substituted with halogen； R1 and R2 each represent hydrogen, alkyl, cyano, or carboxyl； R1 and R2 may together form oxo； R3 to R10 each represent hydrogen or methyl； and R3 and R4, R5 and R6, R7 and R8, and/or R9 and R10 may together form oxo； a method for inducing a callus and a method for plant transformation using such agent for inducing a callus.
