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The impact of agricultural and anthropogenic activities on Lhotický and Vitický stream in the watershed of the river Želivka
Jakešová, Helena ; Charvátová, Helena (advisor) ; Petrů, Anita (referee)
Every small watercourse is part of the balance in nature. Human activity affects the quality and the physico chemical composition of water. Man is changing riverbeds and hydrological conditions of the environment. This bachelor thesis evaluates the chemical composition of experimental flows of the Lhotický stream and the Vitický stream of the Želivka river basin in the Křemešník Highlands. Doing field research, monitoring and evaluating the results of water samples is carried out to find the influence of human activities on the quality and composition of water. The area is anthropogenically influenced mainly by sewage water in the municipalities where sewage treatment plants are missing. Agricultural activity causes contamination along the entire length of the flow. The streams do not have a treated bed, overflowing is possible in numerous floodplains, the impact of pollution is mitigated by riparian vegetation.The monitored indicators rank the experimental flows into the lowest class. In the area, maintaining a healthy ecosystem is possible.
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Graphic ability to move of preschool children and its development before starting school
JAKEŠOVÁ, Hana
Bachelor's dissertation is dealing with graphical motor ability of preschool children and its progress before entering the primary school. The dissertation target catches the developmentof the level the graphical- motor ability skills and proving pozitive impact preventive stimulating schedule for the level the grapical-motor ability skills of preschool children. The dissertation is divided in two main parts. The first part defines theoretical skills, the second one is practical. The theoretical part is dealing with developmental period of preschool child, drawing performance, motor ability skills focused for the rough and fine motor ability, graphical ability, sense- ability, vizual motor ability and audio-motor ability. Furtherwith correct labour habbits by drawing and writting as the body position, relax of the hand, grip and selection of writting instruments. I tis dealing with the problems of school maturity and readiness of the child as well. Practical part consists two parts. The first part is making the methodical material of preventive-stimulating programm the development of the graphical ability the preschool children. The second part is aimed for founding out the graphical ability-level the preschool children on choosen childrenś group in nursery school (kindergarten) before opening and after ending the work with the programm. The observing methods and conversation have been used for the development. The conclusion for the next practice has been created from discovered survey.
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Optimized biological method for the detection of sensitivity of red clover varieties to white clover mosaic virus (WClMV) and red clover mottle virus (RCMV) infection in the climatic conditions of the Czech Republic
Jakešová, H. ; Fránová, Jana
Red clover is a very important leguminous plant used in crop rotations on arable land, in temporary as well as permanent clover and grass stands. The persistence of clovers is negatively influenced by pests and diseases that attack the root and shoot parts of the plant. In the course of studies into the presence of viral diseases (2007–2011), the most frequently detected viruses were White clover mosaic virus, (WClMV, genus Potexvirus, family Alphaflexiviridae) and Red clover mottle virus (RCMV, genus Comovirus, family Secoviridae). The two viruses were observed in populations of clover throughout the Czech Republic. RCMV significantly reduced the yield and stand persistence of red clover. Given that no direct protection has yet been developed against the viruses, plant breeding directed to enhancing resistance to both WClMV and RCMV offers good prospects. Both viruses are mechanically transmissible.
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Cultivated and wild growing forage crops – reservoirs of viruses and phytoplasmas
Fránová, Jana ; Petrzik, Karel ; Jakešová, H. ; Bečková, M. ; Sarkisova, Tatiana
Symptoms of mosaic, yellowing/reddening, phyllody, necrosis and dwarf have been observed in cultivated as well as wild growing forage crops. Red clover mottle virus (RCMV, Comovirus), clover yellow vein virus (Potyvirus), potato virus X, white clover mosaic virus (WClMV, Potexvirus), alfalfa latent and pea streak viruses (Carlavirus), new members of genus Cytorhabdovirus and Carlavirus were identified by sequencing. Bacilliform particles (ca 213 – 533 nm by 44 – 58 nm) of the genus Cytorhabdovirus, WClMV, alfalfa mosaic virus (Alfamovirus) and particles resembling members of the genus Badnavirus were observed on negatively stained preparations and ultrathin sections by electron microscopy and mechanically transmitted to host plants. WClMV, RCMV, bean yellow mosaic virus and new member of Potyviridae family were determined in wild growing plants. The occurrence of phytoplasmas belonging to different 16S ribosomal subgroups was confirmed (16SrI-B, 16SrI-C, 16SrX-A, 16SrXII-A).
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