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Efekt hnojení dusíkem a bórem na výnos a kvalitu řepkového semeneLadislav Varga, Otto Ložek, Ladislav Ducsay, Peter Kováčik, Tomáš Lošák, Jaroslav HlušekActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(5), 391-398 | DOI: 10.11118/actaun201058050391 Field trials with winter rape (Brassica napus L. var. napus) variety Rasmus were established in August in the years 2002-2004 at the experimental station in Kolíňany which belongs to the Slovak University of Agriculture in Nitra. In the experiments we explore the effect of supplementary spring topdressing of rape with nitrogen and boron in the BBCH 29-30 stage with regard to the yields of seeds and their qualitative parameters (TSW, content of oil and crude protein). In the experiment we applied DAM-390 (solution of ammonium nitrate and urea, 30% N) at a rate of 30 kg N/ha and Humix Bór (humic acids + N, K, B) at a rate of 0.240 kg B/ha. The different climate conditions in the respective years had a significant effect on yields of rapeseed and ranged as follows: 2003: 1.80-2.29 t/ha; 2004: 2.60-3.35 t/ha; 2005: 2.45-3.29 t/ha. The significant decrease in seed yields in the first year of the experiment was caused namely by the deficit in precipitation in January, February and June 2003 and high temperatures in May and June in the same year. In terms of the individual years and the three-year average the application of Humix Bór itself did not significantly improve the yield and qualitative parameters of seeds compared to the unfertilised control. In a three-year average the application of the N fertiliser alone or in combination with Humix Bór increased seed yields and the crude protein content by 22.4-30.7 % and 4.0-4.9 rel. %, respectively, compared to the unfertilised control. The significantly highest seed yields (2.98 t/ha) were achieved when the plants were treated with a combination of nitrogen and Humix Bór as compared to all the other treatments (2.28-2.79 t/ha). The oil content in seeds increased significantly to 44.1% only when treated with a combined application of DAM-390 and Humix Bór as against the unfertilised control (42.8%). Fertilisation did not change the TSW which ranged only between 4.47 and 4.67 g. |
MOŽNOSTI VYUŽITÍ HYPERELASTICKÝCH MATERIÁLOVÝCH MODELŮ V NUMERICKÉ ANALÝZE LISOVÁNÍ DŘEVOTŘÍSKOVÉHO KOBERCEVáclav Sebera, Jan TippnerActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(4), 83-94 | DOI: 10.11118/actaun200957040083 The main goal of the work was to evaluate a possibility of using various hyperelastic material models implemented into ANSYS computational system for the numerical analysis of wood-strand mat pressing or wood-based composites. Subsequently, the most suitable hyperelastic model was used as a material model in compression simulation. Pressing itself was modelled as a contact transient analysis with wood-strand mat being defined as a homogenous and isotropic continuum with the chosen material model. In the analysis only displacement degrees of freedom are considered. Output of the simulation is a contact pressure, which is necessary to apply to compress the mat on the required height. The analysis serves as a take-off platform for further research in wood-based composites pressing process. |
Bionomie a cecidogeneze Contarinia petioli (Kieffer) (Diptera, Cecidomyiidae)Jaroslav UrbanActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 259-280 | DOI: 10.11118/actaun201058020259 Recently, the abundant occurrence of galls of Contarinia petioli (Kieffer) was noted on Populus tremula in the Brno region and elsewhere in southern Moravia. The bionomics and cecidogenesis of the gall midge was studied on 5 to 15-year-old aspens in Forest District Bílovice nad Svitavou, Training Forest Enterprise Masaryk Forest in Křtiny in 2007 and 2008. Imagoes fly there at the end of April and at the beginning of May. Females lay eggs in several partial clutches at 1 to 6(10) pieces. About 91% newly hatched larvae settle on petioles of unfolding leaves, about 8% on the bark of terminal parts of shoots and about 1% on leaf blades. By means of sucking the larvae of the 1st and 2nd instars galls are created in the 1st half of May. Larvae of the 3rd instar occur in galls from the 20th May when galls are grown-up. Larvae abandon the galls in the 1st decade of June through an oval hole 0.6 × 0.4 mm in diameter. Galls are on average 6 mm long, 5.4 mm wide and 5.1 mm high. If they are localized within a short distance of each other then often create formations up to 17 × 11 × 9 mm in size. There are 1 to 6(10) chambers in galls and in each of them, only one larva develops. The paper deals in detail with the differentiation of galls including chambers as well as natural enemies of the gall midge. Torymus quercinus Boh., T. cultrans Graham & Gijswijt (Torymidae) and Tetrastichus sp. (Eulophidae) rank among natural enemies of larvae in galls. |
Relaxace sil v sýru Eidamského typu během jeho zráníŠárka NedomováActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(5), 271-280 | DOI: 10.11118/actaun201058050271 The present study was performed to determine the influence of fat content and ripening time on changes in the viscoelastic properties and, separately, in the viscous and elastic properties of Edam cheese, based namely on the results of a stress-relaxation test. In order to obtain some more detail inside on the cheese rheological behaviour a limited number of the mechanical tests under compression has been performed. The significant effect of the loading rate has been demonstrated. The main aim was to describe the experimental results in terms of the semi-empirical Maxwell model, which describe the rheological properties of cheese during ripening. Results suggest that the tested cheeses behave like linear viscoelastic body. The fat content has no influence on the elasticity as well the viscosity of the cheese during its ripening. |
PŮSOBENÍ STRESU U VRCHOLOVÉHO MANAGEMENTU A JEHO DOPADY DO ZDRAVOTNÍ A PRACOVNÍ OBLASTIDana Maria Staňková, Miloš DrdlaActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(6), 235-240 | DOI: 10.11118/actaun200957060235 Within the frame of this paper the key theoretical knowledge to the selected topic is described, the presentation of partial results and discussion on the issue of the psychological aspects of managerial work, focusing on stress and its manifestations are submitted. The aim of this research was to identify the most frequent stress symptoms in the physiological, emotional and behavioral field and to define the main factors which cause them in work and private life terms. For the purpose of this research of stress effects on health area a questionnaire technology of our own design was chosen. For a deeper understanding of sources of an increased psychological stress in managerial activities a technique of interviews with the top managers was used. Research investigation has showed the action of stress on the senior managers, particularly increased during the current economic recession. The most significant signs of stress are manifested in physiological area, especially by fatigue, headache, digestion problems and sleep disturbances, as in the emotional area by anxiety, excessive concern and overall irritability. At the same time stress impacts also the behavioral area, where it has a negative impact to the work and family life. In the course of processing this subject, an absolutely obvious need occurred for a deeper processing of this large area of work stress, which will be subsequently dealing with, and whose output will be, the methodology of anti-stress strategy for HR (Human Resources) managers and Senior Executives of companies to prevent stress, promote health and quality of living conditions in the workplace. |
Vliv společné aplikace Promalinu® v různých fenologických fázích pupenů a řezu v diferencovaných vzdálenostech na postranní větvení u tří odrůd třešně (Prunus avium L.) pěstovaných v centrální ChileEduardo von Bennewitz, Claudio Fredes, Luisa Gutierrez, Tomáš LošákActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 45-50 | DOI: 10.11118/actaun201058020045 A study was carried out during 2005 in the Maule Region of Chile (34.56°S, 71.5°W) to evaluate the effect of the co-application of Promalin® at different bud phenological stages and notching at different distances on lateral branching of three sweet cherry cultivars. Treatments significantly increased total feather length in comparison to the untreated control only in the case of 'Bing'. Total feather growth in these cases was more than double that of control trees. On 'Lapins' treated trees, total number of lateral shoots was in most cases significantly increased. In 'Stella' trees, total feather length and total number of lateral shoots were not affected by treatments. |
Vliv skladování na obsah aminokyselin v hlízách bramborMonika Černá, Stanislav KráčmarActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(5), 49-56 | DOI: 10.11118/actaun201058050049 The aim of this study was to investigate the effect of storage duration on amino acids content in potato tubers. Tubers of six cultivars were stored for 16 weeks. Crude protein was determined by the Kjeldahl method. The amino acid content was identified after acid hydrolysis; sulphur amino acids were oxidized with the mixture of hydrogen peroxide, formic acid and phenol. The essential amino acids index and chemical score was calculated. The whole egg protein was used as reference protein. The effect of storage duration and cultivar on the total amino acids content was found to be significant in all potato varieties. The level of the total amino acids contents was determined within the range of 80-87%. Similar downward trend was observed in crude protein. The essential amino acids index varied considerably among the potato cultivars, ranging from 42 to 57%. Sulfur amino acids and isoleucin were the limiting amino acids in all the investigated tubers. |
VYUŽITÍ LINEÁRNÍHO PROGRAMOVÁNÍ V OPTIMALIZACI OSEVNÍHO PLÁNU ZEMĚDĚLSKÉHO DRUŽSTVA V ČRJitka Janová, Pavla AmbrožováActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(6), 99-104 | DOI: 10.11118/actaun200957060099 The production planning is one of the key managerial decisions in agricultural business, which must be done periodically every year. Correct decision must cover the agriculture demands of planting the crops such as crop rotation restrictions or water resource scarcity, while the decision maker aims to plan the crop design in most profitable way in sense of maximizing the total profit from the crop yield. This decision problem represents the optimization of crop design and can be treated by the methods of linear programming which begun to be extensively used in agriculture production planning in USA during 50's. There is ongoing research of mathematical programming applications in agriculture worldwide, but the results are not easily transferable to other localities due to the specific local restrictions in each country. In Czech Republic the farmers use for production planning mainly their expert knowledge and past experience. However, the mathematical programming approach enables find the true optimal solution of the problem, which especially in the problems with a great number of constraints is not easy to find intuitively. One of the possible barriers for using the general decision support systems (which are based on mathematical programming methods) for agriculture production planning in Czech Republic is its expensiveness. The small farmer can not afford to buy the expensive software or to employ a mathematical programming specialist. The aim of this paper is to present a user friendly linear programming model of the typical agricultural production planning problem in Czech Republic which can be solved via software tools commonly available in any farm (e.g. EXCEL). The linear programming model covering the restrictions on total costs, crop rotation, thresholds for the total area sowed by particular crops, total amount of manure and the need of feed crops is developed. The model is applied in real-world problem of Czech agriculture cooperative and the results of its solution are compared to the real decision made. The applicability of the model in every day agriculture managerial practice in Czech Republic is discussed and its possible enlargement is mentioned. |
Polymorfismus mikrosatelitních markerů na 3H a 7H chromozomu u genotypů ječmene rezistentních a náchylných k Rhynchosporium secalisHana Nevimová, Jan Bednář, Tomáš VyhnánekActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(2), 69-78 | DOI: 10.11118/actaun200957020069 The objective of the present study was to explore the polymorphism of microsatellite markers localised on chromosomes 3H and 7H in 15 genotypes of barley (Hordeum vulgare L.), spring form (2n = 2x = 14 chromosomes, genome HVHV) from the collection of genetic resources of the Agricultural Research Institute Kroměříž, Ltd. showing various degrees of susceptibility to Rhynchosporium secalis. The selection of SSR markers was based on hitherto achieved knowledge according to which the greatest amount of resistance genes against Rhynchosporium secalis is localised on chromosomes 3H and 7H of barley. We selected 33 SSR markers for the analyses; 17 were localised on chromosome 3H of barley and 16 on chromosome 7H. Out of the total 33 SSR markers, 32 were polymorphous and one marker (Bmac0282) was monomorphic. In total we detected 172 alleles ranging between 101 and 235 bp; the average number of alleles per locus was 5.21. In terms of the polymorphism of the SSR markers localised on chromosomes 3H and 7H the highest polymorphism (60%) was detected in the Bmag0006 and Bmag0021 SSR markers; the lowest in the Bmag0877 and EBmac0713 markers, i.e. 20% and 13.3%, respectively. The average polymorphism based on analyses of 17 SSR markers on chromosome 3H was 37.6% and of 16 SSR markers on chromosome 7H was 31.3%. We also calculated the statistical indicators of the variability rate characteristics of the individual microsatellite markers: diversity index (DI) which ranged between 0.000 and 0.907 (on average 0.704); polymorphous information content (PIC) ranging between 0.000 and 0.906 (on average 0.679); and probability identity (PI) ranging between 0.006 and 1.000 (on average 0.137). On the basis of constructed dendrograms for SSR markers of both chromosomes together it was possible to divide the analysed set into cluster I of genotypes resistant and cluster II of genotypes susceptible and moderately susceptible to Rhynchosporium secalis, and was not possible in dendrograms of individual chromosomes. |
ICT podpora pro měření zákaznických ukazatelů definovaných metodou Balanced ScorecardFrantišek DařenaActa Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(3), 19-26 | DOI: 10.11118/actaun200654030019 In the paper an approach to support of strategic management process using the Balanced Scorecard method is discussed. The main focus is primarily directed to the customer perspective as the most important determining factor of today's strategic management. The article suggests general framework for construction of individual performance indicators from this field independently on particular implementation of existing information system in the organization. Methods of gaining necessary information from organization's database and from organization's environment using customer research are considered. |
Vliv sezony a otců na výsledky superovulace a přenosů embryíZdeňka Hegedűšová, J. ŘíhaActa Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(5), 25-36 | DOI: 10.11118/actaun200654050025 The aim of the study was evaluate the influence of season and sires on profit and quality of embryos after superovulated treatment. Next we evaluated the conception rate after transfer of fresh and frozen embryos. |
KOMPARACE VYBRANÝCH UKAZATELŮ ČESKÉHO A NĚMECKÉHO PEKÁRENSKÉHO TRHUHelena ChládkováActa Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(6), 69-76 | DOI: 10.11118/actaun200654060069 The baking industry is one of the most important parts of the Czech food processing industry. |
3D vizualizace a tvorba konečně prvkové sítě z anatomických vzorků dřeva, Část II - Algoritmický přístupPetr KoňasActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(1), 79-88 | DOI: 10.11118/actaun200957010079 Paper presents new original application WOOD3D in form of program code assembling. The work extends the previous article "Part I - Theoretical approach" in detail description of implemented C++ classes of utilized projects Visualization Toolkit (VTK), Insight Toolkit (ITK) and MIMX. Code is written in CMake style and it is available as multiplatform application. Currently GNU Linux (32/64b) and MS Windows (32/64b) platforms were released. Article discusses various filter classes for image filtering. Mainly Otsu and Binary threshold filters are classified for anatomy wood samples thresholding. Registration of images series is emphasized for difference of colour spaces compensation is included. Resulted work flow of image analysis is new methodological approach for images processing through the composition, visualization, filtering, registration and finite element mesh formation. Application generates script in ANSYS parametric design language (APDL) which is fully compatible with ANSYS finite element solver and designer environment. The script includes the whole definition of unstructured finite element mesh formed by individual elements and nodes. Due to simple notation, the same script can be used for generation of geometrical entities in element positions. Such formed volumetric entities are prepared for further geometry approximation (e.g. by boolean or more advanced methods). Hexahedral and tetrahedral types of mesh elements are formed on user request with specified mesh options. Hexahedral meshes are formed both with uniform element size and with anisotropic character. Modified octree method for hexahedral mesh with anisotropic character was declared in application. Multicore CPUs in the application are supported for fast image analysis realization. Visualization of image series and consequent 3D image are realized in VTK format sufficiently known and public format, visualized in GPL application Paraview. Future work based on mesh improvement through mesh error statistic, image acquisition and thresholding improvement by more sophisticated filters together with code optimization for fast image analysis is discussed. Also fractal characteristics classification on microscopic scale level is taken into account for further work. |
Vztahy mezi stádem, plemenem, věkem beranů, hustotou jejich spermatu a motilitou spermií během testu přežitelnostiLadislav Štolc, Luděk Stádník, Alena Ježková, František LoudaActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(4), 109-116 | DOI: 10.11118/actaun200957040109 The objective of this study was to determine the effect of herd, breed, the age of rams, their semen density, and the type of diluter used on sperm motility during a survival test. The total level of sperm activity of 49 rams was evaluated. A statistically significant effect of the herd, breed, the age of the rams, and the density of their semen on sperm motility after 30, 60, and 90 minutes was determined. Significant differences among herds were detected in the level of sperm activity after 90 minutes of the survival test only, P < 0.05. A significant difference (P < 0.05) between breeds was determined only in the case of sperm activity after 60 minutes of the test. Higher sperm motility during the entire survival test was detected in Bohemia Forest rams. A non-significant difference (P > 0.05) was found in the sperm activity in relation to the age of the rams. Sperm survival during the test significantly differed in relation to sperm density before diluting (P < 0.05). No significant differences among diluters used were confirmed. Relationships among sperm activity before and after diluting and during the entire survival test were confirmed by significant Pearson's correlation coefficients (P < 0.001). |
Konsolidace v rámci systému společného konsolidovaného základu daněDanuše NerudováActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(6), 181-188 | DOI: 10.11118/actaun200856060181 In 2007, when the pilot project of Home State Taxation System should started, but none of the EU Member States applied for, the European Commission has turned its attention to different project in the area of corporate income taxation. The paper presents the problems of consolidation under the system of Common Consolidated Corporate Tax Base, which is at present the aim of the European Commission in the area of corporate tax harmonization. Firstly, the paper presents the results of comparative analysis, which have been done throughout the EU Member States. The research was aimed at the area of group taxation schemes availability. Secondly, the paper presents the draft of CCCTB directive in the field of creation of the group for taxation purposes, the rules for access and exit from the group and the rules for calculation of thresholds for voting rights. The different possibilities of group creation are presented on the schemes. The paper also discuss the rules, suggested by the draft directive, which could create legal uncertainty for the companies and could cause the situation in which the companies would not know whether they can consolidate their accounting results or not, or whether they are the member of the group or not. The paper suggests the possible solutions in that area. At the end, there are also mentioned and discussed the methods, which could be used for consolidation under CCCTB system in the EU. |
Genetická struktúra deviatich plemien koníMonika Burócziová, J. Říha, R. Židek, J. Trandžík, D. JakabováActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(2), 57-60 | DOI: 10.11118/actaun200856020057 In the present study was estimate the genetic diversity and relationships among nine horses breeds in Czech and Slovak Republic. |
Vliv exprese genu pro HPPD na obsah vitaminu E v ječmeni jarnímMichal Kosař, Lumila Holková, Natálie Březinová Belcredi, Jaroslava EhrenbergerováActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(4), 13-18 | DOI: 10.11118/actaun200957040013 The enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) has a very important role in the biosynthetic pathway of vitamin E. Its activity influences the final level of tocols in plant tissues. Seven barley cultivars with different vitamin E level were grown under control conditions and activity of HPPD gene was measured four, eight and twelve days after pollination of ear tissues. It was found that activity of HPPD gene corresponded with vitamin E content detected in grains (r = 0.77*). The relationship between the gene activity for HPPD eight and twelve days after pollination and vitamin E content was also confirmed for analyzed cultivars grown in the field conditions (r = 0.85*). |
Využití konceptu MDA ve vývoji strukturální oblasti prezentační vrstvyJan KryštofActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(6), 123-132 | DOI: 10.11118/actaun200957060123 This paper presents an approach for developing the presentation layer of software applications. The approach is based on the concept of the Model Driven Architecture (MDA) and uses a UML - based model of graphical user interfaces, which is created according to rules defined in a meta - model. The meta - model is not oriented to a particular platform, thus all designed models can be created independently of the programming language and widget library. This platform independent UML based model can be transformed into source - code for an arbitrary programming language and can be used in a software development process. |
POROVNÁNÍ UV A VODOU ŘEDITELNÝCH LAKŮ Z POHLEDU MNOŽSTVÍ EMISÍ VOCMilan MelounActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(4), 257-264 | DOI: 10.11118/actaun200856040257 This contribution investigates the problematic of indoor air pollution. There were tested low emitting types of lacquers - UV and waterborne lacquers. The work has been splitted in to two parts. In the first part samples of lacquers were applied on the particle board with beech veneer on the surface. Samples of air with VOCs (Volatile Organic Compounds) from lacquers were taken 3 and 24 hours after application. Tests proved that film layer of UV lacquer emit much smaller volumes of VOCs than acrylic waterborne lacquers or than 2-component epoxide waterborne lacquer. Acrylic waterborne lacquers' materials emitted especially butoxyethylene, epoxide lacquer emitted a lot of butoxyethanol and methoxypropanol and UV lacquers particularly emitted toluene, benzene and xylene. Second part of testing consists of VOCs' measuring of chosen lacquers applied on different base materials - inertial material glass and particle board with beech veneer. Tested criterion was the impact of different base material on emitted amount of VOCs. The results showed that lacquer coated on glass emit much more chemicals than lacquer on wood material. All materials were also tested on total amount of organic compounds emitted in to the air - on the TVOC. Measuring showed the same results as the first parts of research. |
Výnosy vytrvalých trav v létě a na konci vegetačního obdobíJiří Skládanka, Petr Doležal, František Hrabě, Jan Šeda, František MikyskaActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(2), 105-114 | DOI: 10.11118/actaun200957020105 The paper deals with the yields of Festulolium, Dactylis glomerata, Arrhenatherum elatius and Festulolium-Dactylis glomerata mixture during the growing season and at the end of the growing season. The yields were assessed in the Bohemian-Moravian upland at 560 m a.s.l. A small-plot experiment was established in three repetitions. The assessment was made in three subsequent years. The experiment was annually fertilized with 50 kg.ha-1 N, 30 kg.ha-1 P and 60 kg.ha-1 K. Evaluated were dry matter yields and RYT values (Relative Yield Total) in the mixture of Festulolium and Dactylis glomerata. In summer, the sward was used either for one cut (harvest in early June) or two cuts (harvests in early June and late July). At the end of the growing season, the stand was harvested in October or in November or in December. Yields of the first cut in early June ranged from 5.90 to 9.12 t.ha-1. Yields of the second cut in late July ranged from 1.05 to 4.60 t.ha-1. Statistic difference between the species was significant (P < 0.05) in the respective cuts. Total yields of dry matter in the growing season ranged from 7.51 to 10.05 t.ha-1. Number of cuts and year showed a statistically highly significant influence (P < 0.01) on DM yields. The mixture of Festulolium and Dactylis glomerata exhibited an additive relation (RYT = 1) in the first cut and an antagonistic relation (RYT < 1) in the second cut. At the end of the growing season, the yields ranged from 0.71 to 2.27 t.ha-1. Average yields of one-cut swards (harvested in summer in early June) were at the end of the growing season 2.27 t.ha-1 and average yields of two-cut swards (harvested in summer in early June and late July) were 0.79 t.ha-1. From October to December, the yields were decreasing from 1.78 to 1.32 t.ha-1. Species, number of cuts in summer, harvest date at the end of the growing season and year showed a statistically highly significant influence (P < 0.01) on dry matter yields. In the first two production years, the mixture of Festulolium and Dactylis glomerata exhibited an antagonistic relation (RYT < 1) at the end of the growing season. In the third production year, the relation between Festulolium and Dactylis glomerata as expressed by the RYT value could be identified as synergic (RYT > 1). |
Dědičnost rezistence meruněk k viru šarky švestky u potomstev odrůdy 'Harlayne'Petra Pilařová, Boris KrškaActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(5), 243-250 | DOI: 10.11118/actaun200957050243 Natural resistance to Plum pox virus (PPV), the agent of sharka disease, is one of the most important traits of interest to stone fruit breeders, although few sources of resistance have been identified. One of the few apricot cultivars which does show resistance, 'Harlayne', was chosen for a study of the genetics of PPV resistance. It was crossed with three different cultivars, two susceptible ('Vestar' and 'Strepet') and one immune ('Orangered'). Four different lines (since there was one reciprocal combination) were established and the F1 crosses were subsequently inoculated with the PPV-M and PPV-D strains by grafting infected buds. A woody indicator Prunus persica 'GF 305' was then also top-grafted onto the plants of three of these F1 populations. The observations of leaf symptoms and accompanying ELISA tests were performed over three, or in one case five, growing seasons and then hybrids were classified accordingly, as either resistant or susceptible. The resistant : susceptible ratios were calculated and compared with expected theoretical ratios using the χ2-test. The ratios of resistant to susceptible plants in the progeny derived from the four apricot crosses are compatible with the hypothesis of three dominant genes being responsible for PPV resistance, with 'Harlayne' being heterozygous for all three genes. However, the possibility that resistance is controlled by just two dominant genes can not be ruled out just yet. |
POROVNÁNÍ ZÁKLADNÍCH TĚLESNÝCH MĚR ACHALTEKINSKÝCH KONÍ CHOVANÝCH V ČESKÉ REPUBLICE, RUSKU A KAZACHSTÁNUMichaela Prausová, Iva Jiskrová, Eva Sobotková, Libor MajvelderActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(5), 181-186 | DOI: 10.11118/actaun200856050181 Our research object was to record and to measure as much as possible Akhalteke horses, which are bred in Czech Republic, Russia and Kazakhstan. We measured and recorded 3 basic body measures - Height at withers, chest girth and girth of cannon. The only condition we have was the age of horses determined on to 3.5 years and older. At the end we recorded 260 horses. We divided the values to the groups according to state, sex and age cathegory. We use the GLM method and Tukey-B test to evaluate the results. The results of the analyse of the Height at withers (HW) shew the statistically conclusively lower values of Czech horses than in horses from Russia and Kazakhstan. The average of the HW of Czech Akhalteke horses is 154.0385cm, in comparison with Russia 157.94 cm and Kazakhstanu 156.53 cm. Next we found the statistically conclusive differencies of the values of the Girth of Chest (GCh) between Akhalteke horses from Russia (179.65 cm), Czech Akhalteke horses (177.08 cm) and horses from Kazakhstan (174.82 cm). Also the Akhalteke mares (180.06 cm) had the statistically conclusivelly higher the GCh than stallions (176.58 cm). |
HODNOCENÍ VLIVU KAPKOVÉ ZÁVLAHY NA KVALITU HROZNŮPatrik BurgActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(1), 31-36 | DOI: 10.11118/actaun200856010031 Drip irrigation constitute one of the general factor by viticulture production. Their wide utilization it is possible expect in warm south exposed regions of southern Moravia. Gist is deficienty of rainfall during the vegetation (about 500 mm), which espressivo yield and qualities performance. Principal aim research design solving on constitution horticultural techniques is verify and valorize influence drip irrigation on growth vine guilty and qualities her performance in climatic and soil conditions of southern Moravia. Subsequently formulate valid findings for users of drip irrigation, which enable their efficient utilization behind contemporary reservation regular, high-quality harvest. |
Rozšíření a biologie jestřába lesního (Accipiter gentilis L.) v ChřibechMartin Tomešek, Petr ČermákActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(1), 153-164 | DOI: 10.11118/actaun200957010153 In 2002-2006, mapping the goshawk (Accipiter gentilis L.) population was carried out at the SE edge of the Chřiby Upland, the Czech Republic. At the same time, the food spectrum of the predator was determined in detail in 2004. The studied area amounted to about 30 km2. In the area, 5 nest localities occurred. Each year five occupied nests were observed. The food spectrum was analysed according to leftovers of food in nests and in the vicinity of the nests. In total, 387 leftovers of food were found. Birds represented 52%, mammals 42% and other animals (insect, reptiles etc.) 6% of prey. The population of goshawk was monitored from the period of a wedding flight to a period when young birds left their nest during the period of five years. The number of eggs was on average 2.9 per one nest. The total number of laid eggs was 73 during five years. The number of brood was on average 2.7 per one nest. Sex ratio was 47/53 per cent in favour of males. The total number of hatched birds was 68 during five years, out of the number 32 females and 36 males. Moreover, dimensions of nests at particular localities were also determined. The diameter of nests was on average 72.2 cm and the mean height of the actual nest was 48 cm. Nests occurred at an average height of 21.3 m. |
Vyhodnocení produkce mléčného tuku a bílkovin inbredních a outbredních holštýnských kravJiří Bezdíček, Jan Šubrt, Radek Filipčík, Jan ŘíhaActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(5), 19-26 | DOI: 10.11118/actaun200957050019 The aim of this study was to explore the depression effects of level of inbreeding on kg of fat and protein presented in the form of breeding values. The data included cows calved in the years 1990-2006 at farms in the Czech Republic. Inbred cows were grouped according to Fx coefficients (Fx = 1.25%, Fx = 2.0-3.125%, Fx = 4.0-12.5% and Fx = total). The breeding values for inbred cows were compared with their outbred equals (2689 equals in sum) - half-sisters, sharing the same sire, dam reaching the same breeding value (± 5%) and their first calving occurring at the same farm, at the same time (±2 month). The PROC GLM of SAS® with fixed effects (age at first calving, year of calving, number of lactations, first calving interval and relative breeding value of sire and dam were applied to all data). |
VLIV VÝUKY NA VNÍMÁNÍ VYBRANÝCH TYPOGRAFICKÝCH VLASTNOSTÍ DOKUMENTŮPetra Talandová, Jiří RybičkaActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(6), 189-198 | DOI: 10.11118/actaun200856060189 This paper concentrates on the problems of documents quality evaluation and perception. It presents the results of our own research which was made at our faculty in last months. The research was aimed at marketing materials, their quality and their evaluation by customers. After another comparative research we have concentrated on the question of typography and its evaluation by customers. It has been proved that typography, although not very visible for many readers, does influence readers' evaluation of the whole document. |
VLIV SUMY EFEKTIVNÍCH TEPLOT NA AKUMULACI ZÁSOBNÍCH LÁTEK V KOŘENOVÉM SYSTÉMU VOJTĚŠKY SETÉ (MEDICAGO SATIVA L.)Josef Hakl, Jaromír Šantrůček, Pavel Fuksa, Josef KalistaActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(2), 81-86 | DOI: 10.11118/actaun200856020081 The aim of this study was to investigate the relation between growing degree day method and accumulation of root reserve saccharides before over wintering by alfalfa (Medicago sativa L.) in the condition of Czech Republic. In 2002-2004, the field experiment was conducted at the Research station of the Czech University of Life Sciences in central Bohemia. The interval between summer and last autumn harvest was 40-50 days or 60-70 days, respectively. These intervals were expressed as cumulative growing degree-days (GDD) for each year. The plants were sampled in each autumn with four replicates for each variant; the average depth of sampling was 150 mm. The weight of roots, amount of starch, and water soluble saccharides (WSC) per m2 was determined. The total accumulation of root reserve saccharides was determined mainly by conditions during all vegetation period. The length of the interval or cumulative GDD influenced only variation of this basic amount. The GDD was corresponded better with starch content whilst WSC was more related to length of the interval. In central Bohemia condition, the GDD 600-700 °C was preliminary determined for maximal accumulation of root reserve saccharides. The GDD above this level did not significantly increase the root reserve accumulation. For exact verify of this model, other experiments in more sites are needed. |
Chování vybraných stolních tuků při dynamickém zatěžováníŠárka NedomováActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(4), 43-54 | DOI: 10.11118/actaun200957040043 The new method of the evaluation of the mechanical behaviour of fats has been designed. This method is based on the evaluation of the fat response to dynamic loading. Dynamic loading has been realized by fall of bar impact. Response function has been represented by the time history of the fat surface displacement. Response of the tested table fats have been evaluated both in the time and frequency domain. Two factors affected rheology of the examined fat products: temperature of the measurement and product origin. The influence of fat content can be described namely in the frequency domain. The results obtained between 14 and 20 °C showed significant differences in the fat rigidity. |
Štatistická analýza zmesí v pravdepodobnosti ruinovaniaRastislav Potocký, Milan StehlíkActa Univ. Agric. Silvic. Mendelianae Brun. 2009, 57(6), 209-214 | DOI: 10.11118/actaun200957060209 If the hypothesis on exponentially distributed claims in a risk (or surplus) model is untenable then, in many cases, the assumption that they are mixtures of two (or more) exponentials is a suitable substitute. In the first part of the paper tests of homogeneity for exponentially distributed claims are discussed and their properties are stated. The statistical properties of parameter estimations for such claims are also mentioned. In the second part the classical Cramer-Lundberg ruin model is discussed when claims are distributed as mixtures of exponentials. Our attention is focussed primarily on assesment of accuracy of approximations obtained. Then our results are compared to those already known. |
VÝVOJ REGIONÁLNÍHO HDP V KRAJÍCH ČR SE ZAMĚŘENÍM NA METODICKÉ ASPEKTYMonika Nováková, Luděk KoubaActa Univ. Agric. Silvic. Mendelianae Brun. 2008, 56(6), 77-92 | DOI: 10.11118/actaun200856060077 The regional GDP is used in the European Union as the important indicator to the distribution of the European funds. However in the Czech Republic this indicator has had only a short history because regional GDP started to be constructed in the half of the ninetieth. The aims of the paper are to present and evaluate the progress in the process of the regionalization of the GDP in the Czech Republic, review economic productivity of the Czech regions (level NUTS 2 and NUTS 3) and finally point out the persisting weaknesses of the regionalization of the GDP in the Czech Republic. First part of the paper describes problematic beginnings of the process of the regionalization of the GDP, evaluates changes of the methodology and discusses the actual state of this affair. Second part of the paper describes the variability of GDP among the Czech regions at level NUTS 2 and NUTS 3. Alternative modifications of the indicator GDP (for example GDP, GDP per capita, rate of growth) are used in this regional analysis. Consecutively relative positions of individual regions in the Czech Republic are discussed. There are pointed out some contradictions in the Czech regional statistics in this paper. The defined drawbacks indicate possible way of the research into the future. |


