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Asexual and sexual reproductive strategies in clonal plants

Frontiers in Biology 2007年第3期2卷 256-262页

作者： ZHANG Yufen ZHANG Dayong Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering and Institute of Ecology Beijing Normal UniversityBeijing 100875China

Most plants can reproduce both sexually and asexually(or vegetatively),and the balance between the two reproductive modes may vary widely between and within *** clonal growth may affect the evolution of life history traits in many ***,in some clonal species,sexual reproduction and sex ratio vary largely among *** in sexual reproduction may strongly affect plant’s adaptation to local environments and the evolution of the geographic ***,clonal growth can increase floral display,and thus pollinator attraction,while it may impose serious constraints and evolutionary challenges on plants through geitonogamy that may strongly influence pollen *** pollination can bring a cost to plant fitness through both female and male *** co-evolutionary interactions,therefore,may exist between the spatial structure and the mating behavior of clonal ***,a trade-off may exist between sexual reproduction and clonal *** allocation to the two reproduc-tive modes may depend on environmental conditions,com-petitive dominance,life span,and genetic *** different reproductive modes represent adaptive strategies for plants in different environments,we expect that most of the resources should be allocated to sexual reproduction in habitats with fluctuating environmental conditions and strong competition,while clonal growth should be dominant in stable *** we know little about the consequence of natural selection on the two reproductive modes and factors which control the balance of the two reproductive *** studies should investigate the reproductive strategies of clonal plants simultaneously from both sexual and asexual perspectives.

关键词： clonal growth variation of sexual reproduction clonal architecture mating system trade-off

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