The polyploids of Pyrethrum Cinerariifolium Trev were induced by colchicine solution.Many variation tube buds with doubled chromosome were obtained,then propagated the buds to gain the strains.

• 用秋水仙素诱导除虫菊多倍体,获得多个染色体加倍遗传稳定的变异试管苗,进行试管苗快速繁殖并建立株系。