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Effect of temeperature stress and water shortage on thousand grain weight of selected winter wheat varietes
Hlaváčová, Marcela ; Pohanková, Eva ; Klem, Karel ; Trnka, Miroslav
The aim of the presented study was to assess the effect of high temperatures and water shortage during anthesis on thousand grain weight (TGW) of two winter wheat varieties (Tobak and Pannonia). In addition, numbers of grains per spike were also assessed. The six growth chambers were used to simulate heat stress conditions within following gradient of temperature maxima: 26 degrees C (control chamber), 29, 32, 35, 38 and 41 degrees C. The relative humidity (RH) course and photosynthetically active radiation (PAR) intensity were controlled via protocols. Additionally, drought stressed (dry) and well-watered (wet) treatments were established within each growth chamber. The plants were removed from the growth chambers after 14 days and they were left until a full maturity, exposed to actual weather conditions. The TGW at 14% moisture were evaluated for particular treatments within both winter wheat varieties. TGW was generally more affected by high temperatures under drought stress than in well-watered conditions. The results revealed that Pannonia TGW was much more affected by the water deficiency in combination with high temperature (particularly 38 and 41 degrees C) than Tobak TGW.
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Effect of high temperature and water shortage stresses duration during anthesis on the selected winter wheat yield formation components
Hlaváčová, Marcela ; Rapantová, Barbora ; Surá, Kateřina ; Klem, Karel ; Hlavinka, Petr ; Trnka, Miroslav
The aim of this study was to assess the effect of drought and high temperatures on Tobak winter wheat variety during one of the most sensitive developmental stage (anthesis) from the viewpoint of harvest index (HI) and spike productivity (SP). The 5 growth chambers (where the plants were exposed to these stress factors) were used for these purposes. The various protocols consisting in photosynthetically active radiation (PAR) course, relative air humidity (RH) and daily temperature courses were run. The plants were divided into 2 groups within each growth chambers: (1) Drough-stressed (Dry) and (2) well-watered (Wet). Two lengths of stresses duration were tested: 3 and 7 days. The plants were exposed to ambient weather conditions up to the full maturity after stresses exposition within the growth chambers. Subsequently, the plants were harvested manually and HI and SP were evaluated. The statistical analyses showed that the effect of each stress factor separately was statistically significant both for HI and SP14, nevertheless, these two factors interaction was statistically significant only in the case of HI.
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Effect of drought stress on selected winter wheat yield formation components within pot and field experiimental design
Hlaváčová, Marcela ; Pohanková, Eva ; Klem, Karel ; Hlavinka, Petr ; Trnka, Miroslav
The object of this study was to find out what is the behaviour of the same winter wheat variety (Bohemia) plants cultivated within pot and field experiment. Therefore, the main aim of this study was to verify (based on the pot experiment results) whether the pot experiment (that is limited by the soil area) does not substantially affect plant reactions. The pot experiment was carried out in growth chambers where daily temperature course, relative humidity (RH) and photosynthetically active radiation (PAR) were set via protocols. The pots were exposed to the drought stress for 14 days with the daily maximum temperature 26 °C from noon to 2 p.m. The pots were split into 2 groups: (1) Dry where the soil moisture within pots were maintained below 30% of the maximum water holding capacity, (2) Wet where the soil moisture did not decrease below 70% of the maximum water holding capacity. The plants within Wet variant were considered as a control group. The pots were placed onto the concrete floor of a vegetation hall (where the plants were exposed to the weather conditions) prior and after stress regime exposition. The field experiment was conducted within experimental station in Bystřice nad Pernštejnem belonging to the Bohemian-Moravian Highlands in the Czech Republic. The drought stress was established through the transparent roofs installed above plants’ tops level in the field. The control experimental plot without roofs was nearby there as well. The plants were harvested when the full maturity was reached and the selected yield formation components were evaluated.
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Effect of high temperatures and different water regimes on selected winter wheat varieties above-ground biomass production
Hlaváčová, M. ; Klem, Karel ; Hlavinka, Petr ; Trnka, Miroslav
The aim of this study was to assess the effect of high temperatures and soil water scarcity during anthesis on the above-ground biomass allocation of the two winter wheat varieties (Bohemia and Pannonia). The six growth chambers were used to simulate heat stress conditions within following gradient of temperature maxima: 26°C (control chamber), 29, 32, 35, 38 and 41°C. The relative humidity (RH) course and photosynthetically active radiation (PAR) intensity were controlled via protocols. Additionally, drought stressed (Dry) and well-watered (Wet) treatments were established within each growth chamber. The plants were removed from the growth chambers after 14 days and they were left until a full maturity, exposed to ambient weather conditions. The spike productivities of the main spikes and harvest indices (HI) of the main spikes were evaluated for particular treatments within both winter wheat varieties after harvest.
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The inspection activity of the municipal trade office in Mladá Boleslav
Hlaváčová, Martina ; Borská, Jana (advisor) ; Pavla, Pavla (referee)
This masters thesis deals with the analysis and evaluation of inspection activities of the Municipal Trade Licence Office in Mladá Boleslav.
In the theoretical part of the thesis, an analysis of the legal regulation of inspection activities as of June 30, 2015 is made.
The empirical part of the thesis deals with the process of inspection and comparison of the procedures of the individual phases of inspection pursuant to Act No. 552/1991 Coll., on state inspection, and Act No. 255/2012 Coll., on inspection (Inspection Code). It further describes practical experience as well as the problems that the inspection workers of the Municipal Trade Licence Office had to deal with in the course of administrative activities in connection with the amendment of Inspection Code.
In addition, the thesis deals with a questionnaire survey while its evaluation brings the answers to the question how business entities perceive inspection surveys conducted with regard to their business activities.
For the reason of comprehensiveness, the development in the number of business entities in the administrative district of the administrative authority, number of inspection surveys conducted, their focus, and possible sanctions, are documented, monitored in the period of last 10 years.
The work concludes with the summary of inspection activities from the point of view of the Municipal Trade Licence Office in Mladá Boleslav as well as from the point of view of business entities.
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Central government debt of the CR in comparison with selected EU countries
Hlaváčová, Monika ; Severová, Lucie (advisor) ; Jitka, Jitka (referee)
This thesis explains concepts related to the topic such as central government debt, government debt, public debt, budget system and more. The analytical part is focused on the development of central government debt of the Czech Republic and its structure in the years 2000-2014. The central government debt from the point of view of the holders is divided into domestic and foreign debt. Its development and the development of individual components of these debts are described. In the thesis are also mentioned factors, which influenced the decline in central government debt in 2014. The next section compares the evolution of central government debt in CR and selected EU countries, namely Estonia, France, Italy, Germany, Spain and Greece. The structure of central government debt of selected countries for the period 2000-2010 is also analyzed, especially the marketable state debt that dominates. Its main parts are treasury bills, short, medium and long-term bonds. The thesis also describes the development of the government debt of individual countries and explains its difference from the central government debt. Evolution of government debt, such as percentage of GDP for next year, for the years 2015-2017 is estimated in STATISTICA programme. The causes of the sovereign debt reported by some authors as well as some suggestions for their solution are discussed.
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Vliv aplikace kompostu na množství a kvalitu půdních humusových látek
Hlaváčová, Marcela
Bachelor thesis is focused on assessment of humic substances content and quality under compost application. Long-term field experiments were established on Haplic Chernozem (Praha). We evaluated total organic carbon content, humic substances sum, humic and fulvic acids content, ratio HA/Fa, humification degree, nutrients content and absorbance of humic substances in UV-VIS spectral range. One way ANOVA -- analysis was used for statistical assessment of received data. Positive effect of compost on humic substances content and quality and on nutrients content was confirmed.
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Financial products with state support
Hlaváčová, Michaela ; Radová, Jarmila (advisor) ; Fleischmann, Luboš (referee)
The thesis deals with financial products, which the state supports, whether by the state concessions or tax contributions restricts or even specifies the exact amount of the interest rate on a loan supporting the acquisition of own housing. The thesis is focus on the stimulus, which state uses. How citizens use the aid they receive from the state. The development of these incentives in the past, and an easy overview of what remains for the changes planned. In the practical part is shown, what brings financial products with support to households and what is the impact on their family budget. In a brief overview is included, as people use different products in recent years.
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Analysis of poplar water-use efficiency at Domanínek experimental site
Hlaváčová, M. ; Fischer, Milan ; Tripathi, Abishek ; Orság, Matěj ; Trnka, Miroslav
The main objective of this study was to test if water-use efficiency (WUE) values are higher for short-rotation poplar coppice than they are for field crops. WUE of woody biomass was determined for 16 trees within a short-rotation poplar coppiced culture (poplar clone J-105) in the within the Czech Republic during the 2013 growing season. Total WUE of woody biomass for the 16 measured trees was 4.93 g kg−1 when calculated with the data set without a vapour pressure deficit condition and 4.63 g kg−1 when calculated with the data set with a vapour pressure deficit condition. Poplar clone J-105 is a tree species with relatively high WUE, but some crops or short-rotation coppice species can reach higher or comparable WUE values.
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Evaluation of water use efficiency of short rotation poplar coppice at Bohemian-moravian highlands
Hlaváčová, Marcela
The diploma thesis provides basic characteristics of short rotation coppice plantations, then the most significant short rotation coppice species cultivated in the Czech Republic are described. The detailed description of particular Populus L. clone J-105 grown at the plantation of the Test Station Domanínek Ltd. follows. Afterwards, key determinants of short rotation coppice yield are presented in the text. The last theoretical part of the thesis deals with water use efficiency (WUE) with emphasis on the method used at the experimental plantation in Domanínek. The methods of sap flow measurements and biomass determinations are described for this purpose. The main aim of the practical part of the thesis is to determine WUE of 16 measured trees where sap flow measuring systems were installed. These trees are divided into 3 cohorts according to diameters at breast height (DBH) at the beginning of the growing season 2013. The additional measurements were carried out: phenological imaging, soil moisture measurements, LAI measurements and sapwood area determination. The statistical analysis of WUE did not show any statistically significant differences between values of WUE for individual cohorts. Only in May, the statistically significant difference between cohort 1 (trees with the thickest stems) and cohort 3 (trees with the lowest values of DBH) appeared.
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