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Mortal response and growth of individual plants in a population of orchard grass dactylis glomerata part 3 relationship between tiller density and tiller weight



Mortal response and growth of individual plants in a population of orchard grass dactylis glomerata part 3 relationship between tiller density and tiller weight



Grassland Science 24(4): 270-276



D. glomerata was grown at various densities, and the development of plant (genets) and tillers in each density was investigated. Although the relationship between mean plant weight and density had a tendency to conform to the competition-density law, the development of the plant population in higher densities was not conformed to the -1.5 power law through time. Tiller death occurred in the majority of plants in the population, and the rate of growth of surviving tillers was related to tiller death. Consequently, the changes in tiller densities in various plant densities followed the common thinning line in the period of vegetative growth. During the reproductive phase and under a frequent cutting treatment, the relationship between mean tiller weight and tiller density might change with time, with no density-induced thinning.

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