Variation of Relative Growth Rate and Survival in Ecologically Contrasting Populations of Agrostis stolonifera

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概要

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• Significant differentiation in relative growth rate (RGR) was found among three ecologically contrasting populations of Agrostis stolonifera. Under low nitrogen conditions the sand dune population had the highest mean RGR. The plastic response in RGR to different levels of nitrogen supply was significantly higher in the inland meadow population than in the polder and sand dune populations. The (colonizing) polder population tended to have the highest variation for RGR. Variation in RGR within populations was mainly environmentally determined, although in the polder population significant effects of genotype and of genotype × nitrogen level were found. The repeatability for RGR in this population proved to be different from zero under both nitrogen conditions. Root/shoot ratios of the three populations were not different from each other, independent of the level of nitrogen supply. Correlations between RGR and survival of genotypes within the populations were not significant, which points at the influence of genotype × environment interactions or the possibility that genotypic differences in RGR do not necessarily indicate an adaptation to any habitat, not even the home site.

• 種生物学会の論文

著者

• Andel J.

  Department Of Plant Ecology University Of Groningen Biological Centre

• KIK C.

  Department of Plant Ecology, University of Groningen, Biological Centre

• JONGMAN M.

  Department of Plant Ecology, University of Groningen, Biological Centre

• Kik C.

  Department Of Plant Ecology University Of Groningen Biological Centre:department Of Genetics Univers

• Jongman M.

  Department Of Plant Ecology University Of Groningen Biological Centre

関連論文

• Variation of Relative Growth Rate and Survival in Ecologically Contrasting Populations of Agrostis stolonifera

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