Clonal Plasticity in Response to Reciprocal Patchiness of Light and Nutrients in the Stoloniferous Herb Glechoma Iongituba L.
Clonal Plasticity in Response to Reciprocal Patchiness of Light and Nutrients in the Stoloniferous Herb Glechoma Iongituba L.作者机构：Laboratory of Quantitative Vegetation Ecology Institute of Botany the Chinese Academy of Sciences Beijing 100093 China
出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)
年 卷 期：2006年第48卷第4期
页 面：400-408页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学]
基 金：Key Program of the National Natural Science Foundation of China (30330130 30500070) the National Natural Science Foundation of China for Distinguished Youth Scholar (39825106)
主 题：clonal plant clonal plasticity complementary patchiness functional specialization light soil nutrients.
摘 要：Interconnected ramets of clonal plants can functionally specialize in the uptake of resources from aboveground and/or underground sources. Ramet pairs of the clonal stoloniferous herb Glechoma Iongltuba L. were grown In spatially heterogeneous environments with complementary availability of light and nutrients. Plasticity with respect to root-shoot ratio, fitness-related traits （biomass, number of ramets and dry weight per ramet）, morphological traits （lamina area, root length） were experimentally examined. The aim was to understand the adaptation of G. Iongltuba to an environment with reciprocal patchiness of light and soil nutrients by plasticity In Its root-shoot ratio and clonal morphology. The results showed that the performance of ramets growing In patches with high light Intensity and low soil nutrients into the adjacent opposite patches was Increased in terms of fitness-related traits. However, the performance of those from patches with low light Intensity and high soil nutrients into the adjacent opposite patches was not changed. The root-shoot ratio and clonal morphology were plastic. Morphological traits such as lamina area and root length were altered In a way that enhanced the capture of light resources and soil nutrients. Apparent reciprocal resource transport between the ramets In an environment of reciprocal patchiness of resources can enhance the growth of ramets with complementary resource deficiencies.
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