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《Bulletin of Botanical Research》 2008-01
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Effects of Population Dentisy on Morphological Characteristics of Epimedium sagittatum in Different Growth Periods

QUAN Qiu-Mei LI Yun-Xiang*(Sichuan Provincial Key Laboratory of Environmental Science and Biodiversity Conservation,China West Normal University,Nanchong 637002)  
To reveal the resource and reproduction patterns of Epimedium sagittatum,the effects of clone fragment density on clonal morphological characteristics were investigated during three periods of sexual reproduction with regression and nonparametric test.The results indicated that significant effects of clonal fragment density on clonal morphological parameters.Based on the results of regression,the intensity of density dependence effect was enhanced,and more resources were allocated to sexual reproduction with the density of clone fragments increased.The results of nonparametric test revealed that the leaf number and leaf breadth of clone were gradually increased to gain more resource to enhance the reproduction capacity.
【Key Words】: Epimedium sagittatum density dependence sexual reproduction morphological characteristic clonal fragment density
【Fund】: 四川省杰出青年学科带头人培养计划项目(04ZQ026-047);; 四川省科技厅应用基础项目(03JY029-021-22);; 四川省重点学科项目(SZD0420)资助
【CateGory Index】: S567.239
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