抗除草剂转基因植物的杂草化类型与机理探讨

Mechanism on the volunteer weeds of herbicide- resistant genetically-modified plants

抗除草剂转基因植物(herbicide-resistantgenetically-modifiedplant(HRGMP))已在全世界广为种植。由于种内、种间抗性基因的转移、互渗和某些转基因植物类型自身具有较强的杂草性,转基因植物的田间试验和商业化种植都存在着产生新的杂草类型,甚至超级杂草的风险。即形成:(1)逸生型杂草,(2)衰退型杂草,(3)超级杂草,对生物多样性构成威胁。

The herbicideresistant geneticallymodified plants (HRGMP) has been widely cultivated in the world,about 78% of the transgenic plant species in 2000.Because of transferring,introgressing and escaping of herbcide resistant genes within,between and among HRGMP species and their convertional or wild relatives,HRGMP planting and cultivating will take risks of the volunteer weeds,and lead to potential environmental problem.More efforts,therefore,must be made for longterm risk assessment on HRGMP species in the natural ecosystem.