In addition all kinds of abnormal Mitosis behavior were also observed in different ploidy plants.The cause of diversity of chromosome numbers was priliminary analysed.

• 对不同倍性苎麻植株分生组织的有丝分裂行为，观察到三极分裂、不均等分裂和落后染色体等异常有丝分裂现象，并对造成这种现象的原因作了初步的探讨。