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《Chinese Journal of Ecology》 2007-09
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Phenotypic plasticity,allometry and invasiveness of plants

LU Xia-mei,ZHOU Chang-fang,AN Shu-qing,FANG Chao,ZHAO Hui,YANG Qian,YAN Chao(Institute of Wetland Ecology,School of Life Science,Nanjing University,Nanjing 210093,China)  
Phenotypic plasticity is the property that a given genotype can produce different phenotypes in response to various environmental conditions,and a trait that has a certain genetic basis and can evolve independently.Allometry is used to study and measure the relative growth of one part of an organism,in comparison with the other parts of the organism.The allometry of a plant individual can be seen as a fixed trait determined by the inheritance of species,and plants evolve towards optimal allometric trajectory.The phenotypic variations of a specific genotype under different environmental conditions such as biomass allocation and community geometry difference may result from allometric growth and phenotypic plasticity as well.The allometry of a plant can be seen as 'apparent plasticity',whereas the real plasticity is the change of the allometric trajectory.Both phenotypic plasticity and allometry are the important traits for the invasiveness of plants.The species with higher phenotypic plasticity would adapt to more heterogeneous habitats,and phenotypic plasticity would become a better trait for the survival and spread in heterogeneous environment.The plant invasiveness can be influenced by both the allometry of plant and the change of allometric trajectory.
【Fund】: 国家自然科学基金资助项目(30400054)
【CateGory Index】: Q948
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