Epigenetic phenomena, heritable changes in phenotype, and hence in gene regulation, but not in DNA sequence, occur in the process of polyploidization in many plants.

• 表观遗传现象是指基因表达发生改变但不涉及DNA序列的变化, 它存在于许多植物的多倍体化过程中，而且能够在代与代之间传递。