Due to the effect of chromosome doubling, the DNA genetic structures of autotetraploid vary from its original diploid, and thus autotetraploid phenotype changes correspondingly.

• 由于染色体加倍过程中的加倍因素和非加倍因素的影响, 同源四倍体的DNA遗传结构较其起源二倍体产生了变异, 进而导致其表现型发生相应的变异。