A process for gene conversion of corn includes such steps as immersing the embryo or callus of corn in the agrobacterium D-inf solution containing acetyl syringone, waving for 30-60 seconds, laying aside for 5-60 min, adding it to D-As culture medium, culturing at 22-26 deg.c for 2-7 days in dark condition, washing with aseptic water containing thisporomycin, immersing for 15-60 min, culturing in the culture medium containing thisporomycin for 2-7 days, low-pressure selective culture, high-pressure selective culture, inducing embryoid, and differentiating in differential culture medium to obtain regenerated transgenic plant. |