在值物组织培养过程中,诱发变异是常见现象。这可能是由生理障碍、染包体畸变或基因表达的改变所引起。在玉米再生植株后代中曾观察到变异植株,大多带有不良性状。然而也分离出具有重要农艺性状的可遗传的再生植株。在组织培养中应用诱变剂,能够提高再生植株的变异率,增加获得优良突变体的可能性. In the value of tissue culture, induced variation is a common phenomenon. This may be caused by a physical disorder, a dying of the genome or a change in the gene’s expression. Mutant plants have been observed in progenies of maize regenerative plants, most with undesirable traits. However, heritable regenerated plants with important agronomic traits have also been isolated. The use of mutagens in tissue culture can increase the rate of mutation in regenerated plants and increase the likelihood of obtaining superior mutants.