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In recent years, the response of fern gametophyte to enviroment has grabbed much attention in the academic community.However, studies on intluence of plant invasion to fern gametophyte were scarce.It was increasingly recognized that allelopathy plays an important role in biological invasion.Hence, it is necessary to study the allelopathy of invasive plant to fern gametophyte and elucidatethemechanisms by which invasive plant causes phytotoxicity.