Establishment and identification of a system to transform hairy roots of Echinacea purpurea. Hairy roots were induced from the wounded brim of the explants, 25 days after inoculation of Echinacea purpurea explants with A.

• 利用A4、R1601、R1000三种发根农杆菌诱导紫锥菊的遗传转化,建立紫锥菊毛状根诱导体系。