植物多倍体不論在形态上和生理上都表現了許多优点,因此即使在沒有发現多倍体現象以前,人們已經在无意識中培育出了許多有价值的多倍体种或品种。例如栽培植物中經济价值高而广泛栽培的普通小麦、海島棉、陆地棉和普通菸草,都是自然产生的多倍体种。但是人类自从掌握多倍体規律以后,就能迅速地有計划地誘导多倍体,创造出經济价值更高的植物新品种。 Plant polyploids have demonstrated many advantages, both morphologically and physiologically, so many polyploid species or cultivars have been unconsciously cultivated even before polyploidization was not found. For example, common wheat, sea island cotton, upland cotton and regular tobacco, which are cultivated in high economic value and cultivated widely in cultivated plants, are naturally occurring polyploid species. However, since humans have mastered the laws of polyploidy, they can rapidly and systematically induce polyploids and create new plant varieties with higher economic value.