什么机制导致了外来入侵植物短期内能够在野外高密度、大面积的分布一直是生态学的热点问题。最近研究表明，某些植物之间也能像动物一样进行亲缘识别。这些植物能够根据亲缘关系的远近调节竞争和生长策略，减小“亲属”之间的竞争，甚至提高联合抗性。外来入侵植物的成功入侵是否是因为亲缘识别能力高于本地植物所致？本项目以外来入侵植物紫茎泽兰为例，通过比较紫茎泽兰和本地近缘种在不同养分、种植密度条件下的亲缘识别能力，来验证：是否紫茎泽兰比本地近缘种具有更高的亲缘识别能力，高的亲缘识别能力有助于其成功入侵？亲缘识别能力是否受土壤养分状况和种植密度的影响？同株和同种但不同株后代个体间亲缘识别能力的差异在紫茎泽兰和本地近缘种间是否一致？同时本项目还研究紫茎泽兰通过什么机制来进行亲缘识别。..本项目的研究不仅可以确定亲缘识别在紫茎泽兰成功入侵过程中的作用，对于紫茎泽兰的未来防控也具有重要的指导意义。

It is a hot topic of ecological research for the reason of the invasive plants can distribute with high density in large areas. The recent studies showed that kin recognition was also exist in some plants. These plants can adjust their growth and competitive strategies according to the genetic relationship with neighbor plants. Are kin recognition ability higher for invasive plants than native plants, and which contribute its’ successful invasion? In this study, we compared the kin recognition ability of invasive Ageratina adenophora and closely related indigenous species under different density and soil nutrient conditions. This study want to detect (1) Is kin recognition ability higher for A. adenophora than indigenous species? Does high recognition ability contribute its’ successful invasion? (2) Do density and soil nutrient have effects on kin recognition ability? (3) Are the differences of kin recognition ability of siblings from same individual and different individuals consistent between A. adenophora and indigenous species? Besides, this study will also explore the mechanism of kin recognition for A. adenophora...This study not only identifies the role of kin recognition on the successful invasion of A. adenophora, but also has a practical application value for controlling the spread of A. adenophora.