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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Effect of flooding régime on the growth of Carex acuta in a mesocosm experiment
 JANUŠ, Vojtěch
This MCs thesis is part of the Grant Agency of Czech Republic GACR P504/11/1151 The role of plants in bilance of greenhouse gases in Carex fens. The results of this project will serve as a basis for another analyses of greenhouse gases in natural wetland biotops. Growth and morphological changes of Carex acuta were monitored in mesocosm experiment durig the growing seson. Carex acuta has already been the subjekt of numerous studies. The aim of this study is to compare the growth rate of plants C. acuta grown under controlled conditions, simulating different regimes of flooding habitat. Number of shoots and maximum plant height were observed during the growing season. Destructive method has been used to fall aboveground and belowground biomass in autumn. Elevated water levels in the middle of the growing season caused a slowdown in growth in height and the creation of new shoots. Reduced water level of the mid-growing season seemed to faster growth of plants in height. Underground biomass significantly negatively affected by increased water level in the middle of the growing season.
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Assessment of phenotypic variation of commercial cultivars and wild populations of Phalaris arundinacea in experimental conditions
 JANUŠ, Vojtěch
The bachelor thesis is part of the project AMVIS 20-LH 11039. This work is aimed at evaluating the growth characteristic and phenotypic variation of wild populations and commercial cultivars of Reed canary grass (Phalaris arundinacea) in experimental conditions. Within the frame of this project an experiment was established at the Institute of Botany in Třeboň. Within the Bc Thesis, morphological characteristics of the studied plants were investigated during the vegetation period, 26.6.?18.9.2012. A destructive method was used for aboveground biomass sampling at the end of experiment. Plants from native populations had higher values of studied characteristics than commercial cultivars. The highest value of aboveground biomass had population from the area of Dyje river (433 g).
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