Different opinions about the origination of somaclonal variation, which is a very common phenomenon in plant tissue culture, exist, such as the activation of transposable elements and DNA methylation.

• 植物体细胞无性系变异是植物组织培养中的普遍现象，关于这些变异的起源存在多种观点，如转座因子的活化、DNA甲基化等。