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Informační zdroje v ARBORISTICE
Vašíčková, Lucie
This Bachelor thesis disserts on information sources in arboriculture. It features information necessity of interested parties, being focused on availability, information efficiency and conditions for data acquisition of problems in arboriculture. Information sources are arranged in order of processing stage. Following parts of this thesis deal with sorting out gained information by the help of suggested system considering needs of individual subjects, a momentary analysis and a recommendation for their further progress. While I was creating this thesis, I always kept asking over ultimate questions: Where, What and What For? The cardinal determination is to ease information orientation in arboriculture.
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The effect of stress on basic urban environment ecophysiological characteristics on tree
TONCAROVÁ, Gabriela
The subject of this bachelor thesis is the effect of stress on Platanus acerifolia which grows in different areas of the city. The first location is in the centrum of the city (Lannova třída) and the second location is in the city´s park in České Budějovice (Stromovka). There was a search of quantity of photosynthetic pigments and maximum of photochemical efficiency PS (photosystem) II. This search was conducted by a metod of measuring chlorophyll fluorescence and spectrophotometry. Samples of leaves from Platanus acerifolia were taken during growing season May to September. There were three trees chosen from each location and there were five leaves from each tree examined by metod of measuring chlorophyll fluorescence. The leaves were examined approximately at the same height and the examination was done at noon time. There were 150 leaves examined in total. There were four leaves of each tree used for a method of spectrophotometry. Those leaves were immediately taken to laboratory where the examination took place. There were 120 leaves used for this metod in total. The search showed that the more stressful environment Platanus acerifolia has a smaller content of photosynthetic pigments and photochemical efficiency of PS II decreases. Furthermore, the study showed that Platanus acerifolia belongs among relatively resistant trees. Values maximum photochemical efficiency of PS II and chlorophyll measured at both sites is almost statistically different. The statistical difference between the two sites were usually recorded at the beginning and end of the growing season.
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Comparison of seasonal changes of ecophysiological characteristic of two selected trees under stress of the urban environment
ŠINDELÁŘOVÁ, Lenka
This thesis deals with the study of impact of stress to the two types of broadleaved trees in urban environment during the growing season. The studied species were Small-leaved Lime (Tilia cordata) and London Planetree (Platanus acerifolia). Trees are the important part of the urban environment both from an aesthetic standpoint and from the standpoint of the reduction of negative effects of the urban environment. However, these trees are under the constant influence of stress factors with which they have to deal (air pollution, water, temperature). Some trees deal with stress better but some worse. Because of this fact, two different types of trees were selected, which are able to deal with stress by their own way. As indicators of physiological state of plants under stress, the content of photosynthetic pigments and photochemical efficiency of PS II (QY and QY') were monitored at individual trees. The measurements were carried out always two days consecutively from May to September 2013 in Jiráskovo nábřeží in České Budějovice. Every month, the spectrophotometric measurement to determine the pigments in a leaf was carried out. For the spectrophotometric measurements, twenty-four leaves were measured in total; for the fluorescent measurement, thirty leaves were measured in total. The obtained values of both methods were processed and evaluated by graphs, which together with the average values show the statistic demonstrability of difference between the measured trees in city. According to these measured values, Small-leaved Lime seemed to be more vital at a given location, although London Planetree is marked in the literature as more resistant one towards the urban stress.
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Záchrana genetické diverzity borovice blatky (Pinus uncinata subsp. uliginosa) subendemitu České republiky‚ v centru jejího areálu kombinovanou metodou biomonitorignu‚ kontrolovaného opylení a mikropropagace
Mendelova zemědělská a lesnická univerzita v Brně, Brno ; Výzkumný ústav lesního hospodářství a myslivosti, v.v.i., Jíloviště-Strnady ; Výzkumný ústav Silva Taroucy pro krajinu a okrasné zahradnictví, v.v.i., Průhonice ; Vlašínová, Helena ; Havel, Ladislav ; Souček, Jiří ; Kaňák, Jan ; Janík, David ; Král, Kamil ; Hort, Libor ; Vrška, Tomáš ; Pospíšková, Markéta ; Businský, Roman ; Vejsadová, Hana
Cílem projektu je vhodným managementem ochránit a posílit cenný genofond ohrožené borovice blatky v České republice o geneticky čisté potomstvo. Analýzou DNA ověřit genetickou čistotu reprezentativních jedinců vybraných podle fenotypu pro kontrolované opylení. Získané geneticky čisté osivo použít jako výchozí materiál pro reprodukci borovice blatky v in vitro a ex vitro podmínkách. V roce 2007 byly řešeny tyto úkoly: 1. Základní terénní měření vybraného jádrového území PR Borkovická blata. 2. Provedení asanačních zásahů na uvedené lokalitě, odstranění vybraných fertilních jedinců Pinus sylvestris. 3. Analýza prostorové struktury stromového patra. 4. Zajištění fyzikálních, výživových a růstově regulačních podmínek indukce in vitro regenerace v metodických pokusech z osiva Arboreta Sofronka. 5. Metodické pokusy pro optimalizaci postupu izolace DNA.
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