对细胞培养物再生植株中出现的体细胞无性系的变异近来已有报道。然而,所报道的大多是无性繁殖植物,而且很少进行遗传分析。所以难以区分再生植株的变异是原有的还是培养中发生的。在植物育种中,尤其是禾谷类作物,所期望的突变是染色体内部的突变而不是染色体数 Variation of somatic clones that appear in regenerated plant cultures has recently been reported. However, most of the reported clones are vegetatively propagated and genetic analysis is seldom performed. Therefore, it is difficult to distinguish whether the variation of the regenerated plants occurs in the original or in the culture. In plant breeding, especially cereal crops, the desired mutation is a mutation within the chromosome rather than the number of chromosomes