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Plant competition in the early ontogeny
Čiháková, Klára ; Weiser, Martin (advisor) ; Fendrych, Matyáš (referee)
Competitive impacts on early stages of plant ontogeny are being reviewed in this thesis. Those processes select for evolutionary or phenotypically plastic responses in timing of emergence, seed morphological properties, maternal effects and reaction on environmental cues. However, pattern of the strong selective pressure is sometimes not apparent, due to the lack of data and knowledge on the influence of the other factors in plant's life.
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Determination of germination of selected weed species
CHYLIKOVÁ, Zdeňka
This bachelor´s work is created in the theoretical part by biology, occurrence, spreding, agricultural meaning and regulation of Lambs quarters, Common poppy, Cleavers, Canada Thistle, Perennial sow thistle. By this weeds were determinated the laboratory germination capacity in two options of temperature mode in the practical part. Seeds all the species proved higher germination capacity by the 22 °C except seed Perennial sow thistle.
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Seeds germination at selected weed species
VAŇKOVÁ, Jana
Bachelor thesis is focused on basic informations and familiarization with problems of weeds and their general properties. Purpose of thesis is to determine the germination of selected weed species: Common dandelion (Taraxacum officinale L.) Thlaspi arvense (Thlaspi arvense L.), Coltsfoot Medical (Tussilago farfara L.), Bedstraw (Galium aparine L.), Broad leaved dock (Rumex obtusifolius L.). The result is to compare the effect of different temperature and light conditions for seed germination.
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The germination of plants genus \kur{Tillandsia} on different substrates
KELÍŠKOVÁ, Radka
Seeds of six plant species of the genus Tillandsia (T.tricholepis, T. schiedeana, T. mauryan, T. sphaerocephala, T. streptocarpa and T. fasciculata) was planted on six different surfaces (acacia bark, coir, peat, polystyrene, nylon stocking and jute). In the first part of the experiment were recorded number of germinated seeds on individual surfaces. In the second part of the experiment had been observed growth or dying of germinated small plants for seven months. Statistical evaluation of the results showed that the most suitable surfaces for seeding and initial growth of Tillandsia are jute, nylon stocking and polystyrene.
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Distribution and selected ecological characteristics of \kur{Echinocystis lobata}
MÜLLEROVÁ, Anna
Echinocystis lobata is an European invasive species introduced from North America. Distribution of Echinocystis lobata was studied in the Pilsen region alongside main rivers, including Berounka, Úhlava, Úslava, Mže and Radbuza. The maps of distribution were created from information acquired from literature and field exploration. The germination experiments were conducted in climabox and garden experiments.
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Ecological and evolutionary consequences of orchid dependence on mycorrhizal fungi
TĚŠITELOVÁ, Tamara
Interaction between orchids and fungi belongs to little understood aspects of orchid biology. This thesis investigated an identity of mycorrhizal and other fungal symbionts of several European orchid species and also an influence of these fungal symbionts on ecology, distribution, and evolution of the studied orchid species. Diverse methodological approaches were used including in situ seed germination, culture-dependent and -independent techniques for fungal isolation and identification, molecular phylogenetics, stable isotope analyses, and transmission electron microscopy.
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Influence of water regime on growth and quality of selected grass species
MACHURA, Antonín
The main factors affecting the yield and the quality of grassland are nutrient availability and water regime. In nature and of course in agriculture, water is the most important factor influencing plant growth and reproduction. The aim of this thesis was to evaluate the effect of water regime on germination of selected grass species. We have focused on the following grass species, suitable for use in energy: Dactylis glomerata L. Padánia cultivar, Phalaroides arundinacea L., Chrastava cultivar and Agropyron elongatum L. Under water stress condition, the highest germination rate of 69 % was observed in Agropyron elongatum L., followed by Dactylis glomerata L. (54, 6 %). The lowest germination rate of 28, 6 % was recorded in Phalaroides arundinacea L. This study also compares dry matter yields of selected species during spring harvest. Average yield was 3,3 t.ha-1 in the first year. This work is based on authors own measurement and on the information obtained from Czech hydrometeorological institute.
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Determination of germination in seeds of annual weeds field
ARDOLFOVÁ, Helena
This thesis deals with issue of annual weeds on arable land. The aim of the thesis is processed at selected weeds species overview of biology, extension and suggest regulatory measures for dangerous weeds as for example Galium aparine L., Chenopodium album L. and other. For selected species were assayed determination germination of seeds and its evaluation.
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