Growth of modules of Agropyron michnoi clones under planting plots in Songnen Plains of Northeast China:An experimental research

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外文摘要：Spatial expansion of clonal plants and the growth modules is one of the important contents in research of plant ecology。Utilizing large sampling measuring， we analyzed the module components， growth regularity of vegetative propagation and regular change between the number and biomass of modules in Agropyron michnoi clones under planting single seedling in experimental plots in Songnen Plains of Northeast China at the end of growing season of the second year。The results showed that the plasticity of clonal growth was large;the coefficient of variation of both extensive areas and the quantitative characters of modules were more than 20％。The numbers of ramet， seedling， and bud and accumulative length of the rhizomes showed an exponentially and linear increasing with the increase of the areas and the total number of modules respectively。The biomass of each module showed an allometric growth of power function with total number of modules and total biomass。There were a relatively stable investment for sexual reproduction， a priority allocation strategy on biomass of reproductive ramets， and a module growth strategy of priority forming the rhizomes and the buds in the clones。

外文关键词：

Agropyron michnoiclonal growthvegetative propagation

作者：

Jian Zhang、Yunfei Yang

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作者单位：

Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, China 130024

会议名称：

China-Japan-Korea Grassland Conference on Knowledge Innovation of Grassland Science and Sustainalbe Development of Grassland Agriculture;China-Japan-Korea Grassland Conference Program Committee

会议地点：

Changchun(CN)

会议母体文献：

The 5th China-Japan-Korea Grassland Conference: Knowledge Innovation of Grassland Science and Sustainalbe Development of Grassland Agriculture

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出版时间：

2014