Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013 (vol. 61), issue 3
The effect of the changed amylose and amylopectin ratio on the selected qualitative parameters in spring barley (Hordeum vulgare L.) grain
Marta Balounová, Kateřina Vaculová, Lenka Hložková, Renata Mikulíková, Jaroslava Ehrenbergerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 577-585 | DOI: 10.11118/actaun201361030577 
In 2008-2011, grain yield and chemical composition were assessed in a set of spring barley genotypes with standard and changed amylose/amylopectin ratio (non-waxy and waxy, respectively) at two locations (Kroměříž, Žabčice). Genotypic as well as environmental effects were important for the variations in contents of chemical compounds. The waxy genotypes had statistically significantly higher levels of β-glucans and protein (6.9% d.m., 12.1% d.m., respectively) than genotypes with the standard starch character (5.4% d.m., 11.5% d.m., respectively). The hull-less waxy genotype KM2619.413.4 was statistically significantly different from all other...
Edible insects - species suitable for entomophagy under condition of Czech Republic
Martina Bednářová, Marie Borkovcová, Jiří Mlček, Otakar Rop, Ladislav Zeman
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 587-593 | DOI: 10.11118/actaun201361030587
Since 2002, when the first lecture on entomophagy took place at Mendel University in Brno, till today, participants of these educational lectures were asked to fill questionnaires in order to evaluate interest in entomophagy in Czech Republic and pick suitable species. Analyses of nutritional value of selected species were also performed during this time. The questionnaire was divided into several parts - suitable species, sensory properties, difficulty of breeding and processing and respondents own attitude to the consumption of insect species. For the purpose of this study the questionnaire was evaluated using the semantic differential, so to create...
The variability of sunflower (Helianthus annuus L.) yield and quality influenced by the weather conditions
Ivan Černý, Alexandra Veverková, Marek Kovár, Martin Mátyás
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 595-600 | DOI: 10.11118/actaun201361030595
The field polyfactorial trials were carried out on experimental fields in Nitra - Dolná Malanta in two experimental years 2010 and 2011. Experimental locality is situated in the maize production area (climatic region: warm; climatic sub-region dry; climatic zone: warm, dry with mild winter and long sunshine), in altitude 250 m above sea level, with brown soil. In the trials was observed the influence of both temperature and moisture conditions of experimental area on sunflower yield of achenes and fat content (conventional hybrids NK Kondi and NK Tristan). Technological system of sunflower cultivation was realized in accordance with conventional technology...
The relationship between energy balance after calving and reproductive functions in Holstein dairy cows treated by the OVSYNCH system
Martina Doležalová, Luděk Stádník, Michaela Nejdlová, Dana Němečková, Jan Beran, Jaromír Ducháček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 601-610 | DOI: 10.11118/actaun201361030601
The objective of this research was to evaluate the relationship between the course and the depth of negative energy balance (NEB) rated by changes of the body condition after calving and subsequent recovery of reproductive abilities of Holstein dairy cows treated by OVSYNCH. The body condition was evaluated by the BCS system one week before calving and subsequently at 30-day intervals for the period of 6 months of lactation. Recovery of ovarian functions was evaluated by the results of ultrasound examination of all the dairy cows'’ ovaries in two controls after calving. The first one was performed on an average of 67 days after calving, and the...
Comparison of specific production performances by two crystalline silicon PV systems
Martin Fajman, Josef Vacuška
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 611-621 | DOI: 10.11118/actaun201361030611
A comparison of two independent photovoltaic (PV) systems located close to each other on the south of the Czech Moravian Highland was accomplished. Due to differences in installation parameters; reference quantities were used to calculate transformed data sets for specific production performances comparison. Differences in monthly and annually daily production were performed by t-test.According to obtained results, it was concluded that annually mean daily productions per 1 kWp of installed capacity and per 1 m2 of active area of the panels are significantly better by single crystal silicon installation in tracking system...
Effects of brassinosteroid on the induction of physiological changes in Helianthus annuus L. under copper stress
Angelika Filová, Oksana Sytar, Eleonóra Krivosudská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 623-629 | DOI: 10.11118/actaun201361030623
The purpose of our experiments was to consider sensitivity of the chosen 6 sunflower cultivars (Helianthus annuus L. cv. Belinda, cv. Codiwer, cv. ESPrim, cv. MAS 95, cv. MAS 97 and cv. Spirov) to copper ions with the possibility of elimination by means of brassinosteroids (BRs) on the ground of physiological characteristics (content of dry weight, amount of chlorophylls, proline content, Relative Water Content - RWC as well as malondialdehyde - MDA) and to show possible resistance mechanisms of this plant to copper ions. Lipid peroxidation (LP) is a biochemical marker for the free radical mediated injury. Character of changes in lipid peroxidation...
Design of laboratory cyclone separator for biogas purification
Marián Fodora, Ján Gaduš, Jan Mareček, Tomáš Vítěz, Viera Kažimírová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 631-635 | DOI: 10.11118/actaun201361030631
This article deals with calculation of a cyclone separator for biogas purification using physical and chemical methods. There is presented a methodology for determination of operating dimensions of the cyclone separator and description of principal features of the cyclone separator model. Calculations have been performed for the diameter of the cylindrical part of cyclone separator 175 mm and for the biogas volume flow rate 6.9∙10-5 m3∙s-1. The calculations can be used in practice for the design of cyclone separator depending on the flow rate of biogas, size of the biogas plants respectively. The developed...
Psocid taxocenoses (Insecta: Psocoptera) in the forest ecosystems of the Querci-fageta s. lat. zone in the Western Carpathian Mts. and Polonic subprovincy
Otakar Holuša
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 637-646 | DOI: 10.11118/actaun201361030637
Structure of psocid taxocenoses (Psocoptera) were intensively studied in forest ecosystems of the Western Carpathian Mts. and Polonic biogeographical subprovincy during 1997-2001 in the Czech Republic. Vegetation tiers (= altitudinal vegetation zones) were used as a study frame. Only a part of material, i.e. individuals that was found in the forest ecosystems of Querci-fageta s. lat. communities (= the 3rd oak-beech vegetation tier) was evaluated for purpose of this work. This vegetation tier is widespread in large part of the Opavská pahorkatina hills, in large parts of Podbeskydská pahorktina hills, in the Bílé Karpaty hills...
Breeding for reproduction traits in context of multiplication herds efficiency in swine
Petr Humpolíček, Zdeněk Tvrdoň, Tomáš Urban
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 647-650 | DOI: 10.11118/actaun201361030647
Presented study is a follow-up to the studies focused on effect of different selection pressure applied on two subpopulations of purebred Czech Large White sows on performance in multiplication herds. Higher selection pressure particularly on litter size and number of function nipples, while lower pressure on growth performance was applied in one population. About 1214 farrows of 393 F1 Czech Large White sows were included into statistical evaluation. The mixed linear models using the procedure REML in SAS for Windows 9.1.2. was used. The hypothesis that progeny of sows from hyper-prolific subpopulation breed in multiplier herds have different performance...
Epigeic spiders (Araneae) from the Malá Dohoda Quarry (Moravian Karst Protected Landscape Area, Czech Republic)
Ondřej Košulič, Lucie Nováková, Pavla Šťastná
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 651-662 | DOI: 10.11118/actaun201361030651
This publication makes a faunistic contribution to knowledge of the epigeic spider species composition in the limestone quarry Malá Dohoda which is located in Moravian Karst PLA. The spiders were collected by pitfall trapping between catching period 19. 3.-1. 11. 2012. We chose 6 plots all around the quarry - in the inner part, edges of quarry and outside part of quarry. A total of 1 474 adult specimens were collected and determined as 78 species of 21 families. The most significant finding is vulnerable species (VU) Parapelecopsis nemoralis (Blackwall, 1841) which is the second record for Moravia. Among the other significant findings, both...
Rare and remarkable spiders (Araneae) from vineyard terraces in Pálava region (South Moravia, Czech Republic)
Ondřej Košulič, Vladimír Hula
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 663-676 | DOI: 10.11118/actaun201361030663
Faunistic data of rare and remarkable spider species found in vineyard terraces around Mikulov and Popice are presented. Vineyard terraces are artificial - man made - habitats that were established in the eighties of the 20th century with intention of growing grapevine. Spiders were collected by pitfall traping during 30 April - 28 October 2011 and by day and night sweeping of herb vegetation in different dates of 2011. Twenty two species listed in the Red List of threatened species in the Czech Republic were recorded. In vineyard terraces at the vicinity of Popice, 12 threatened species (CR - 2 species, EN - 3 species, VU - 7 species) were found altogether....
The influence of water extracts of selected turfgrass species on germination and initial growth of Poa annua L.
Peter Kovár, Ľuboš Vozár, Ján Jančovič
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 677-681 | DOI: 10.11118/actaun201361030677
The effect of Lolium perenne L., Festuca rubra L., Festuca arundinacea Schreb., Poa pratensis L. and Poa annua L. aqueous extracts on germination rate and total germinability of Poa annua L. seeds and length of Poa annua L. leaves and roots was studied in a laboratory experiment. Germination of seeds was conducted in the growth chamber at the light and temperature regime - day/night - 12/12 hours, 23/15˚C, rh 70 %, for 42 days. Extracts significantly affected the total germinability and germination rate of Poa annua L. seeds (p = 0.000). The lowest germinability (27.3 ± 7. 1 %) and...
Driver's influence on kinematics of articulated bus
Tomáš Krumpholc, Stanislav Bartoň
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 683-689 | DOI: 10.11118/actaun201361030683
Driver's influence on kinematics of articulated bus. This paper studies kinematics properties of the particle coach as function of driver's activity. The main goals are the prediction of the trajectory, the computation of the vector of velocity of each wheel as a function of the real velocity vector of the midpoint of the middle axle and the real curvature of the bus trajectory. The computer algebra system Maple was used for all necessary computations. Article is divided into four main parts. In the first part are derived integral relations describing trajectory of the middle axes midpoint as a function of the absolute value of the velocity and trajectory...
Oil additive and its effect
Vojtěch Kumbár, Petr Dostál
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 691-697 | DOI: 10.11118/actaun201361030691
The aim of this paper are experimental approaches, selected for analysis of the engine oils and described above, are surely sufficient for the needs of presented research. The spectrometry was used for determination of presence of selected chemical elements and especially metals in oil. Particles monitoring was employed in order to describe the amount, type, and size of friction particles. The temperature dependence of dynamic viscosity was evaluated by use of rotary viscometer. In case of all three approaches it is advantageous to compare the measured values with the results received for unused engine oil of the same marking and viscosity index. If...
The analysis of the regional self-governing units forests in selected European countries
Barbora Lišková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 699-709 | DOI: 10.11118/actaun201361030699
The article focuses on identification, analysis, description and comparison of the regional self-governing units (RSGU) forests in selected European countries. The analysis deals not only with forests in the ownership of basic regional self-governing units such as villages but also with forests of higher regional self-governing unit such as regions or federated states. The identification and description of this type of ownership is not overly published in the Czech Republic. The published foreign overall studies and summaries state mainly the division into forests in public and private ownership. This article is created on the basis of the selection...
Assessing the influence of the Lupinus genus in the biological reclamation of sites degraded by whole-area dozer soil treatment
Oldřich Mauer, Dušan Vavříček, Eva Palátová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 711-720 | DOI: 10.11118/actaun201361030711
The paper deals with possibilities of using the blue lupine (Lupinus angustifolius L.), white lupine (Lupinus albus L.) and garden lupine (Lupinus polyphyllus Lindl) in the biological reclamation of sites degraded by whole-area dozer soil treatment.The lupines were sown into strips or broadcast. The effect of lupines onto the growth and health condition of the young plantations of Norway spruce, European beech and Scots pine was studied together with their influence on the site soil characteristics. The experiment showed that the sowing of lupine favourably affected biometrical characteristics of newly planted trees. Even though...
Perception of landscape, forest and settlement in protected landscape areas
Jana Mikulec, Michaela Antoušková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 721-728 | DOI: 10.11118/actaun201361030721
The paper focuses on perception of landscape, forest and settlement in four Czech protected landscape areas (Kokořínsko, Český Kras, Železné Hory, and Blaník). It studies the relation of perception between the mentioned variables. To study this relation the probability model of logistic regression and Spearman's correlation coefficient are applied. Necessary data for conducted analysis are collected through visitors' (both tourists and residents) survey in studied areas. Data collection was effectuated during summer 2011. The results prove the positive relation between studied variables and are supposed to help to improve economical, ecological and...
Mechanical behaviour of Ostrich's eggshell at compression
Šárka Nedomová, Jaroslav Buchar, Jana Strnková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 729-734 | DOI: 10.11118/actaun201361030729
The deformation and fracture behaviour of Ostrich's eggs at the static compression has been investigated. The mechanical properties of egg to compression were determined in terms of average rupture force, specific deformation and rupture energy along X and Z axes. Exact description of the eggshell counter shape has been used for the verification of a common accepted theory of the compression of bodies of convex form. The eggshell strength seems to be an unique function of the static stiffness. The greatest amount of force required to break the eggs was required when eggs were loaded along the X axis and the least compression force was required along...
Ostrich eggs geometry
Šárka Nedomová, Jaroslav Buchar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 735-742 | DOI: 10.11118/actaun201361030735
Precise quantification of the profile of egg can provide a powerful tool for the analysis of egg shape for various biological problems. A new approach to the geometry of a Ostrich's egg profile is presented here using an analysing the egg's digital photo by edge detection techniques. The obtained points on the eggshell counter are fitted by the Fourier series. The obtained equations describing an egg profile have been used to calculate radii of curvature. The radii of the curvature at the important point of the egg profile (sharp end, blunt end and maximum thickness) are independent on the egg shape index. The exact values of the egg surface and the...
Strength of coffee beans under static and dynamic loading
Šárka Nedomová, Jan Trnka, Pavla Stoklasová, Jaroslav Buchar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 743-749 | DOI: 10.11118/actaun201361030743
Paper deals with experimental research on the crushing of coffee beans of different kinds under quasi-static and dynamic compression. The process of the crushing is described in details. It has been shown that there is variability in the crushing strength values. A relation between crushing strength and the coffee grain shape is also studied. Roasted Arabica coffee (Coffea arabica) beans were used for analyses. Arabica coffees were produced in different countries. All Arabica samples were submitted to a light roast. The detail analysis of the experimental data shows that there is no significant relation between parameters describing the fracture...
Evaluation of harvest losses within a full mechanised grape harvest
Pavel Novák, Patrik Burg
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 751-756 | DOI: 10.11118/actaun201361030751
A contribution deals with an evaluation of harvest losses within a full mechanised berries harvest using two self-propelled harvesters GREGOIRE G 152 and NEW HOLLAND VL 6060 differing in kinds of harvesting and catching mechanisms. Observation was done in vineyards of ZVOS Hustopeče joint-stock company at harvest of Müller Thurgau and Lemberger varieties in a period 2009-2010. Results gained under operating conditions showed that both self-propelled harvesters reached a comparable quality of a harvested product. There were observed losses by a slump in a case of using GREGOIRE G 152 harvester 0.8-1.45%. By using NEW HOLLAND VL 6060 the losses were...
Diversity of Carabidae in limestone quarries of South Moravia
Lucie Nováková, Pavla Šťastná
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 757-764 | DOI: 10.11118/actaun201361030757
This paper presents the results of a study of Carabid beetles in two limestone quarries in South Moravia. The first one was a limestone quarry pit called Lesní lom which is located approximately 1 km away from the northern edge of the city district of Brno-Líšeň. The second locality was a limestone quarry of Malá dohoda which is located in a protected landscape area in the northern part of Moravian Karst. Using formaldehyde pitfall traps, 1682 specimens belonging to 66 species were caught in 2012, out of which 847 specimens (49 species) were from the active quarry of Malá dohoda and 835 specimens (40 species) came from Lesní lom quarry which had already...
Analysis of fragmentation of selected steppe sites in the Pannonian region of the Czech Republic
Vilém Pechanec, Eva Jelínková, Helena Kilianová, Ivo Machar
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 765-775 | DOI: 10.11118/actaun201361030765
The aim of this study was to analyze the landscape fragmentation in selected locations of the Pannonian region in three time periods. Landscape fragmentation is a process during which a large habitat is divided into a number of smaller parts. The fragmentation was analysed using the landscape-ecological indices for Patch Analyst extension. Data entering the analysis is in Esri shapefile format and was prepared for 1:10 000 scale size. To calculate the index of overall contrast of edges (borders), we used the FRAGSTATS application. The complete evaluation led us to the conclusion that the landscape fragmentation in the selected area over time rather...
The content of vitamin E in hop cones of the Saaz variety
Helena Pluháčková, Karolína Benešová, Jaroslava Ehrenbergerová, Blanka Kocourková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 777-785 | DOI: 10.11118/actaun201361030777
The activity of vitamin E, total content of tocols and the content of individual isomers: α-tocopherols, β-tocopherols, γ-tocopherols and δ-tocopherols was monitored in samples of hop cones of the world-important Saaz variety. Hop cone samples originated from hop-breeding area Tršice, Czech Republic. The method used for the determination of vitamin E in barley was modified and used for this quantitative analysis. The results indicate that monitored characteristics are influenced by the year of harvest (2010 or 2011) but also by the age of hop-gardens (hop bucks). High values of vitamin E activity (up to 67.79 mg.kg-1)...
Yield stability of performance in multi-environment trials of barley (Hordeum vulgare L.) genotypes
Naser Sabaghnia, Mohtasham Mohammadi, Rahmatollah Karimizadeh
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 787-793 | DOI: 10.11118/actaun201361030787
Fourteen new breeding lines obtained from the barley breeding programs, cultivar Izeh and one local check genotype were evaluated for yield stability at eleven environments. The combined analysis of variance indicated the significance of the environments, genotypes and genotype by environment interaction. According to the environmental variance (EV) and coefficient of variation (CV), genotypes G2, G12, G13 and G14 while based on Wi, P, PP and SH parameters genotypes G4, G10 and G12 were the most stable ones. Regarding both PI and MSPI parameters, genotypes G2, G10 and G11 were the most stable. According to coefficients of three linear regression models,...
Plant crude extracts and yeast as alternative to synthetic fungicide for controlling postharvest green mould on citrus fruit
Henik Sukorini, Somsiri Sangchote, Netnapis Khewkhom
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 795-801 | DOI: 10.11118/actaun201361030795
The objectives of this research was to evaluate the effectiveness of the combination of plant crude extracts and yeasts as an alternative to replace the synthetic fungicide to control green mould rot caused by Penicillium digitatum on citrus fruit. This pathogen caused 90% of citrus losses during the storage. Control of this pathogen mainly with chemicals, but concerned with environmental contamination, human health, and pathogen resistance, chemical treatment is frequently decreased. Eugenia caryophylata crude extracts and Candica utilis showed to be the best combination to attain a reduction in green mould incidence by 90.3%...
Quality assessment of fruit juices by NIR spectroscopy
Petr Šnurkovič
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 803-812 | DOI: 10.11118/actaun201361030803
In the article there is described the detection of substances used for adulteration of fruit juices. They were investigated in juice products distributed within the network of retail markets. This detection was performed using the method of near-infrared spectroscopy (NIR). There were analysed samples of orange juices, apple juices, and grapefruit juices. At the beginning, there were assessed quality parameters (soluble dry matter, total acids, formol number, malic acid, citric acid, ascorbic acid, lactic acid, specific density, and ethanol content) and their compatibility with the limit values specified by the Association of the Industries of Juices...
Determination of impurities in biofuels with use of particle size analyzer
Michal Valach, Jan Mareček, Zuzana Hlaváčová, Petr Trávníček, Josef Glos
Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(3), 813-817 | DOI: 10.11118/actaun201361030813
One of the qualitative parameter of biofuel is purity. Measurement of purity of biofuels is very important. The reason is that the number and size of particles influence an engine life. However number and size of various particles have influence on the hydrodynamics and rheologic properties. In the first part of the paper is introduced the description of tested fuels, the method of measuring of number particles and size particles with use particle size analyzer Laser-Net Fines-C (LNF-C). In the second part of this paper results of measurements are stated. The results are compared and evaluated. Two kinds of fuels was tested - biofuels and traditional...