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 Ar 1 represents phenyl substituted with substituent or substituents selected from alkoxy and methylenedioxy Ar 2 represents phenyl substituted with halogen R 1 and R 2 each represent hydrogen, alkyl, cyano, or carboxyl R 1 and R 2 may together form oxo R 3 to R 10 each represent hydrogen or methyl and R 3 and R 4 , R 5 and R 6 , R 7 and R 8 , and/or R 9 and R 10 may together form oxo a method for inducing a callus and a method for plant transformation using such agent for inducing a callus.
