Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2012 (vol. 60), issue 5

Biosorption of Cu, Zn and Pb by thermophilic bacteria - effect of biomass concentration on biosorption capacity

Libor Babák, P. Šupinová, M. Zichová, R. Burdychová, E. Vítová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 9-18 | DOI: 10.11118/actaun201260050009  

The aim of this work was to study the biosorption capacity of metals copper, lead and zinc by Geobacillus thermodenitrificans and Geobacillus thermocatenulatus. Solution of each metal was mixed with dry biomass and incubated at room temperature. The supernatant was taken and used for complexometric titration.The sorption capacity for Cu²⁺ was highest when using 0.5 g.l^-1 Geobacillus thermodenitrificans (57 ± 4 mg.g^-1). The sorption capacity rapidly decreases with increased concentrations. Similarly for Zn²⁺ ions, the highest sorption capacity was for biomass concentration 0.5...

Growth models of Thermus aquaticus and Thermus scotoductus

Libor Babák, P. Šupinová, R. Burdychová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 19-26 | DOI: 10.11118/actaun201260050019  

Members of the genus Thermus family are signifiant producers of secondary metabolites, which are very commonly used in industry. Beside the productivity, it is also important to study the growth curve of each strain. The mathematical models which are commonly used to describe behavior of microbial strains under different physical and chemical conditions can reduce measured data.In this study, the mathematical models which describe only the microbial count were used. For analysis, Verhulst model, von Bertalanffy model and Richards model were chosen.During the cultivation of Thermus aquaticus and Thermus scotoductus strains,...

Assessment of nutritional parameters of native apple cultivars as new gene sources

Josef Balík, Otakar Rop, Jiří Mlček, Pavel Híc, Miroslav Horák, Vojtěch Řezníček

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 27-38 | DOI: 10.11118/actaun201260050027  

Although there are tens of different apple varieties in Europe, only some of them were purposefully bred and selected in the past. In spite of the fact that they can have outstanding nutritional and technological properties, the majority of them are of only a local importance. The objective of this study was to show and popularize altogether 35 local apple varieties which are typical of the conditions of Central Europe. However, their genetic uniqueness represents an irreplaceable ecological wealth and for that reason these local varieties could become a new and outstanding source of nutrients and food. Today, they can be used not only for direct consumption...

Relationships between changes in Holstein cow's body condition, acetone and urea content in milk and cervical mucus and sperm survival

Jan Beran, Luděk Stádník, Jaromír Ducháček, Monika Okrouhlá

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 39-48 | DOI: 10.11118/actaun201260050039  

The objectives of this study were to evaluate the relationship between changes in Holstein cow's body condition score (BCS), acetone and urea content in the milk and cervical mucus (CM) and sperm survival in CM. At insemination, samples of milk and CM were collected from 64 Holstein cows. Content of acetone and urea were determined. Sperm motility was assessed subjectively at the beginning and after 30, 60 and 90 minutes of the short-term heat test in CM. Data about evaluation of cow's BCS were taken from farm evidence. The data set was analyzed using SAS/STAT software. Effect of change in cow's BCS one month before insemination was significant only...

Notch aspects of RSP steel microstructure

Michal Černý, Josef Filípek, Pavel Mazal, David Varner

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 49-60 | DOI: 10.11118/actaun201260050049  

For a rather long time, basic research projects have been focused on examinations of mechanical properties for Rapid Solidification Powder (RSP) steels. These state-of-art steels are commonly known as "powdered steels". In fact, they combine distinctive attributes of conventional steel alloys with unusual resistance of construction material manufactured by so called "pseudo-powdered" metallurgy.Choice of suitable materials for experimental verification was carried out based on characteristic application of so called "modern steel". First, groups of stainless and tool steel types (steel grades ČSN 17 and 19) were selected. These provided representative...

Textural properties of bread formulations based on buckwheat and rye flour

Petra Dvořáková, Iva Burešová, Stanislav Kráčmar

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 61-68 | DOI: 10.11118/actaun201260050061  

Modern nutrition and nutritionists worldwide more and more require high nutritional quality foods including breads. Products based on rye (Secale cereale L.) and other cereals such as buckwheat (Fagopyrum esculentum Moench) provide nutritional benefits such as higher intake of fibre which has a positive effect on digestion and decreases a risk of obesity and heart disease, therefore current trend is to replace part of gluten breads with other cereal products. The main aim of this work was to observe changes in breads based on buckwheat and rye mixtures influenced by ratio of buckwheat and rye flour. Eleven ratios of buckwheat-rye flours...

Chrysomphalus aonidum (Linnaeus, 1758), a new alien pest of ornamental plants in the Czech Republic (Hemiptera: Coccoidea: Diaspididae)

Iva Hlavjenková, Hana Šefrová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 69-78 | DOI: 10.11118/actaun201260050069  

First records of the alien species Chrysomphalus aonidum (Linnaeus, 1758) (Diaspididae) on ornamental plants in the Czech Republic are described. The species was registered in 2008-2010, on plants of Dracaena reflexa var. angustifolia (sold under the names of Dracaena marginata "Bicolor" and D. marginata "Tricolor") in garden centres of northern and southern Moravia (Opava, Ostrava, Brno). It was also found on two specimens of the same plant in households (Brno, Ostrava). Chrysomphalus aonidum had been occasionally introduced into the Czech Republic with citrus fruits formerly, but it had not been found on...

Experimental application of contour method for determination of residual stress in subsurface layers of milled sample

Karel Horák, Michal Černý, Petr Dostál

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 79-88 | DOI: 10.11118/actaun201260050079  

Determination of residual stress close to the sample surface is in the most cases performed by hole-drilling method, X-Ray diffraction or neutron diffraction. Each of these methods has its benefits and disadvantages. In case of diffraction methods the measurement speed is the main disadvantage. It is also very problematic to apply diffraction method in case of sample with mechanically deformed surface, for example by standard machining operations. Therefore, determined results are very often confusing and hard to interpret. On the other side, hole drilling method is less sensitive to quality of sample surface than diffraction methods, but measurement...

Effect of different tillage intensity on yields and yield-forming factors in winter wheat

Martin Houšť, Blanka Procházková, Pavel Hledík

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 89-96 | DOI: 10.11118/actaun201260050089  

The paper presents results of a study on application of minimum tillage technologies when growing winter wheat. Experiments were performed in the sugar-beet-growing region with loamy chernozem within the period of 2005-2009. Aanalysed and evaluated were effects of different methods of soil processing on yield-forming factors in stands of winter wheat grown after three different preceding crops (i.e. alfalfa, maize for silage and pea). Evaluated were the following four variants of tillage: (1) conventional ploughing to the depth of 0.22 m (Variant 1); (2) ploughing to the depth of 0.15 m (Variant 2); (3) direct sowing into the untilled soil (Variant...

Association analysis of interleukin-18 gene with performance traits in Czech Large White pigs

Pavla Chalupová, T. Urban, A. Knoll

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 97-102 | DOI: 10.11118/actaun201260050097  

This research focused on recently described MspI and VspI SNPs in interleukin-18 gene and their association with selected performance traits (backfat thickness; lean meat content, average daily gain from birth, average daily gain in test, breeding value for average daily gain, for lean meat content, for reproduction and total breeding value) in a population of 344 Czech Large White sows. Both SNPs were genotyped by PCR-RFLP. In this work, these polymorphisms were associated with backfat thickness and lean meat content. Animals with genotype AA (MspI SNP) had significantly (P < 0.05) lower backfat thickness and higher...

Staphylococcus aureus growth and enterotoxin production in different types of milk

Bohdana Janštová, Jr., L. Necidová, B. Janštová, L. Vorlová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 103-108 | DOI: 10.11118/actaun201260050103  

The aim of our study was to assess Staphylococcus aureus growth and the time of first detection of staphylococcal enterotoxins type A, B and C (SEA, SEB, SEC) in different type of milk, depending on the strain and storage conditions. Raw, pasteurized, and UHT milk were inoculated with three strains of S. aureus, and growth patterns were determined by the plate method in accordance with EN ISO 6888-1. Baird-Parker agar medium was used for the detection of S. aureus and the Enzyme Linked Fluorescent Assay (ELFA) used with a miniVIDAS analyzer tested the production of staphylococcal enterotoxins. The results of model experiments showed...

The impact of different tillage treatments on hydraulic conductivity of loamy soil

Ivana Kameníčková, L. Larišová, A. Stoklásková

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 109-114 | DOI: 10.11118/actaun201260050109  

Water infiltration into the soil profile, surface runoff and soil erosion in arable lands depend on the conditions of the top layer. The tillage treatment of the top layer plays a key role in changes of the hydro-physical properties, mainly saturated hydraulic conductivity K_s of the surface layer. The aim of this study was to asses the impact of different tillage treatments on hydraulic conductivity in the locality Bohaté Málkovice. Field experimental works in this area were performed in 2009 and were repeted in 2011 on Haplic Chernozem, medium heavy loamy soil. The experimental area was divided into two parts; top layer of these...

Fungi of the Fusarium genus in the grains of conventional hybrids and transgenic Bt-hybrids of maize (Zea mays L.) in the Czech Republic

Martin Kmoch, Ivana Šafránková, Ludmila Holková, Ivana Polišenská, Zdeněk Krédl, Radovan Pokorný

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 115-124 | DOI: 10.11118/actaun201260050115  

Fungi of the Fusarium genus, the agent of ear rot in maize, not only causes decrease in yields but also negatively affects grain quality and, in relation to mycotoxins production, the health of humans and animals. This study focuses on determining the species range of Fusarium fungi in naturally infected stands of conventional hybrids and transgenic Bt-hybrids of maize in the Czech Republic during 2008 and 2009. Individual species of the Fusarium genus were determined on the basis of morphological characteristics and using polymerase chain reaction. Ten mycotoxigenic species were identified in hybrid maize grains: F. subglutinans...

Investigation of spiders (Araneae) of the Nature Monument Jesličky (South Moravia, Czech Republic)

Ondřej Košulič, Vladimír Hula

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 125-136 | DOI: 10.11118/actaun201260050125  

Faunistic records of spiders (Araneae) in the Nature Monument Jesličky (South Moravia, Czech Republic) are presented. Spiders were collected by pitfall trapping in 2009 and by sweeping of the herb vegetation in 2011. During the both periods a total of 847 specimens were collected, from which 617 adult spiders were determined. We found 88 species belonging to 20 families. Seven species listed on the Red List of Invertebrates of the Czech Republic were recorded: Titanoeca schineri L. Koch, 1872, Scotina celans (Blackwall, 1841), Haplodrassus dalmatensis (L. Koch, 1866), Ozyptila pullata (Thorell, 1875), Ozyptila simplex...

Comparison of analytical parameters of beer brewed in two different technological ways at two pub breweries

Pavel Kryl, T. Gregor, J. Los

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 137-144 | DOI: 10.11118/actaun201260050137  

This publication deals with brewing beer by infusion and decoction technologies of mash production in microbreweries. Samples of two microbrewery beers are compared, namely Richard beer (Brno-Žebětín) produced in a double mash manner appropriate for the Czech brewing type, and beer samples taken at the laboratory microbrewery of Mendel University in Brno (MENDELU), where beer is produced in a simpler and less energy - demanding infusion method. At all the beer samples the basic analytical parameters of real extract, ethanol content, degree of fermentation and the extract of original hopped wort were measured using an automatic beer analyzer. The results...

Particle size distribution of dried sewage sludge

Radovan Kukla, Petr Junga, Jana Ševčíková

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 145-150 | DOI: 10.11118/actaun201260050145  

The aim of this paper was to determine the basic granulometric curves related to the dried sewage sludge and particles size distribution according to Rosin-Rammler, which belongs to the most widely used methods for the statistical distribution of particles in the samples. For this purpose, series of accurate sieves have been chosen. In the next phase, gross calorific value of individual fractions of sewage sludge and subsequently mixed sample, have been determined. Individual measurements were statistically evaluated.

Effects of creatine and vitamin E on muscle energetic metabolism, antioxidant stability and meat quality of pigs

Rudolf Lahučký, Ondřej Bučko, Peter Haščík, Tibor Liptaj

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 151-160 | DOI: 10.11118/actaun201260050151  

The effects of supplementing the diet of pigs with creatine monohydrate (CMH) and vitamin E on blood plasma creatine concentration, vitamin E level in muscle, muscle energy metabolism, antioxidant capacity and meat (musculus longissimus dorsi) quality of pigs (DNA tested and negative on malignant hyperthermia) were investigated. Two treatments were used: supplementation with CMH alone (2 g.kg^-1 of feed, 10 days before slaughter); and supplementation with both vitamin E (500 mg α-tocopherol.kg^-1 of feed for minimum of 30 days) and CMH (2 g.kg^-1 of feed, 10 days before slaughter). Pigs supplemented with CMH...

Methodology for establishing the degree of naturalness of forest stands

Jaromír Macků

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 161-166 | DOI: 10.11118/actaun201260050161  

Forest stands naturalness degree represents the real tree species composition comparison with the tree species on natural vegetation level - It means forest typology units. The natural tree species composition is derived from Typological System of UHUL (Forest Management Institute). The degree of naturalness of forests is one of the attributes for the assessment of the ecological stability of forests, whilst the broader basis for analysis of sustainable development of the territory.The real tree species composition comes from the forest management planes database and the natural potential vegetation one from typological sites units (forest site...

The effect of urea and urea with urease inhibitor on the content of macronutrients in tubers and tops of potatoes (Solanum tuberosum L.)

Ludmila Musilová, Tomáš Lošák, Jaroslav Hlušek, Monika Vítězová, Miroslav Jůzl, Petr Elzner, Radek Filipčík, Miroslav Jůzl, Eduardo Bennewitz

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 167-172 | DOI: 10.11118/actaun201260050167  

In two-year small-plot field experiments in Žabčice u Brna we explored the effect of nitrogen fertilisation with urea and urea with urease inhibitor (Urea + UI) on the content of macronutrients (N, P, K, Ca, Mg) in tubers and tops of potatoes of the variety Karin. The experiment involved 7 treatments. Nitrogen rates in treatments 1-7 were the following: 1) 90 kg N/ha - Urea; 2) 72 kg N/ha - Urea; 3) 54 kg N/ha - Urea; 4) 90 kg N/ha - Urea + UI; 5) 72 kg N/ha - Urea + UI; 6) 54 kg N/ha - Urea + UI; 7) unfertilised control. Each treatment was repeated 4 times.Both fertilisers (Urea, Urea + UI) were reflected irregularly in the contents of N, P, K,...

Effect of biofuel E85 combustion on fuel consumption in spark-ignition engines

Adam Polcar, Marek Žák, Jiří Čupera, Pavel Sedlák

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 173-180 | DOI: 10.11118/actaun201260050173  

Biofuels represent an alternative source of energy that should gradually decrease our dependence on crude oil. A rapid development of their use in combustion engines is above all the consequence of their very positive balance of emissions. The possibility of use of biofuels in conventional combustion engines is given by their physico-chemical properties. Bioethanol is one of biofuels that can be used in spark-ignition engines. However, because of its lower heating value, it is necessary to change the mixing ratio fuel/air. The aim of this paper is to evaluate the effect of combustion of a mixture of bioethanol with gasoline (in the ratio 85:15) on...

Effect of fertilization and harvest frequency on floristic composition and yields of meadow stand

Josef Raus, Pavel Knot, František Hrabě

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 181-186 | DOI: 10.11118/actaun201260050181  

The effect of fertilization and the harvest frequency on production and floristic characteristics of a meadow stand were assessed in a small plot trial established in 2003 in Vatín, Vysočina Region, the Czech Republic. Four levels of fertilization (none; N₀ + P₃₀ + K₆₀ kg∙ha^-1; N₉₀ + P₃₀ + K₆₀ kg∙ha^-1; N₁₈₀ + P₃₀ + K₆₀ kg∙ha^-1) were combined with four treatments of exploitation intensity (4 cuts per year, first cut on 15th May, every next after 45 days; 3 cuts per year, first cut on 30th May, every...

Environmental aspects of Kaiser S2 harvester utilization in mountain terrains

Jozef Slugeň, Martin Jankovský

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 187-198 | DOI: 10.11118/actaun201260050187  

This paper deals with evaluating the ecological impacts of Kaiser S2 harvester utilization in mountain terrains. The harvester was used in bark beetle calamity and secondary felling in mixed forest (spruce, fir, beech) stand with average incline of 70%. Assisting its movement in these extreme conditions were two supporting bases, which were used to stabilize it in the stand. Our aim was to determine the damage to the trees, underwood and stand soil. The resulting damage of remaining stand was 6.19%, which is, considering the demanding terrain conditions and in comparison with the outcomes of other research, a relatively acceptable value. Damage to...

The effect of fertilizer seed coating on the germinating capacity and initial development of some turf grass species and white clover

Martin Sochorec, Pavel Knot

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 199-204 | DOI: 10.11118/actaun201260050199  

The effect of the iSeed method treatment on germination dynamics, total germinating capacity and the length of above-ground and root parts was studied in laboratory conditions for the Red fescue varieties Darwin and Moccasin, Kentucky bluegrass varieties Yvette and Miracle, Perennial ryegrass varieties Beatrice and Milan, and White clover varieties Pirouette and Pipolina. In the Perennial ryegrass, the iSeed treatment adversely affected the energy of germination in the first days of study. The germinating capacity gradually equalized during the experiment. Red fescue and Kentucky bluegrass did not show any response to the treatment. Similarly as the...

Evaluation of quality measurement of Olomouc cake of cheese (Olomoucké tvarůžky) during ripening

Daniela Strnadová, Hana Konečná, Miroslav Jůzl

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 205-210 | DOI: 10.11118/actaun201260050205  

Olomouc cake of cheese (Olomoucké tvarůžky) is smear-ripened cheese, which is produced from sour industrial curd. Brevibacterium linens, which are added during the production process, are reproducing and make gold-yellow smear cover.The aim of this work was to assess the chemical analysis of the quality of Olomouc cake of cheese. Changes in chemical composition were evaluated during different stages of production and at the same time it was detected whether changes in chemical composition during the manufacturing process are same in spring as well as in summer, without statistically significant differences.Dry matter of Olomouc cake...

Small mammals at forest plantations in the Jeseníky Mts. (Czech Republic)

Josef Suchomel, Ladislav Čepelka, Luboš Purchart

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 211-218 | DOI: 10.11118/actaun201260050211  

Small mammal community was studied at Fagus sylvatica plantations in 2007-2011. The animals were captured in snap traps once a year in autumn in the course of three consecutive nights. The abundance, species composition, dominance and diversity were assessed with the help of the Shannon (H) and Simpson (1/D) indexes. A total of 586 individuals of 11 species were captured, out of this 8 rodent species (Rodentia) and 3 insectivorous species (Soricomorpha). Four species, namely Apodemus flavicollis (30.2%), Myodes glareolus (27.1%), Microtus agrestis (24.6%) and Sorex araneus (12.6%), were eudominant, one species was...

Carabidae (Coleoptera) of sinkholes in the northern part of Moravian Karst

Pavla Šťastná, Vladimír Hula

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 219-238 | DOI: 10.11118/actaun201260050219  

Results of faunistic-ecological research of Carabidae in selected sinkholes of the northern part of the protected landscape area of Moravian Karst are presented. The collection of ground beetles was conducted using pitfall traps in 2010 and 2011. A total of 88 species were caught in both years. In the studied area, there was registered incidence of five endangered species in accordance with Decree No. 395/1992 Coll. as amended: Brachinus crepitans, Brachinus explodens, Carabus ullrichii, Cicindela campestris, and Cylindera germanica. At the monitored sites, occurrence of two species (Carabus cancellatus and Cylindera germanica)...

Verification of food supply for red deer under conditions of the air-polluted area of mountain forest ecosystems in the Ore Mountains (Forest District Klášterec nad Ohří)

Zdeněk Vala, Martin Ernst, Tomáš Lošák

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 239-246 | DOI: 10.11118/actaun201260050239  

On the basis of typological classification, representative sample plots 1×1 m were established in forest stands, on meadows and pastures in hunting districts Jelení hora and Černý potok in the area of the Ore Mountains (Forest District Klášterec nad Ohří) in the growing season. The aim of the plots was to determine the existing average area production (kg.m^-2) of biomass utilizable by game. The biomass was differentiated to herb, grass and woody components. Analyses proved that the total daily need of food, energy and mineral substances of red deer in both hunting grounds was fully covered by the natural food offer of herb, grass and woody...

Influence of heavy metals occurrence on respiratory activity of microorganisms in the compost

Monika Vítězová, Tomáš Vítěz

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 247-254 | DOI: 10.11118/actaun201260050247  

This work deals with the influence of selected heavy metals, copper, nickel, cobalt, zinc and cadmium on respiratory activity of microorganisms during the composting process. We focused on comparing the respiratory activity of microorganisms in the compost after composting process in the presence of different concentrations of above mentioned metals and the measured results were confronted with the valid Czech standard for industrial composts. The results show that the high inhibitory effect at low concentrations, about 1 mg/dm³, has cobalt, for which the limit concentration is no set by Czech standard. Other heavy metals exhibit an inhibitory...

The influence of the undercarriage and tire inflation rating on drawbar characteristics of tractors

Petr Vykydal, František Bauer, Pavel Sedlák, Adam Polcar

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 255-264 | DOI: 10.11118/actaun201260050255  

The aim of the measurement was to verify the drawbar characteristics of chosen tractors with different undercarriages. The tractors were of the same engine power as well as type of gearbox (PowerShift - gears full shifted while loaded). We were dealing with the wheeled tractor John Deere 8320 and crawler tractor John Deere 8320RT. The measurement was implemented in the land register of Vrbovec (Znojmo region) in an area where green peas were grown as the main product and winter wheat as the preceding crop. The measured and the counterproductive tractors were interconnected by the rope containing strain-gauge force sensors. The wheeled tractor was decelerated...

Analysis of trends of low flow in river stations in eastern Slovakia

Martina Zeleňáková, Pavol Purcz, Tatiana Soľáková, Beáta Demeterová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 265-274 | DOI: 10.11118/actaun201260050265  

The availability of using hypothesis test techniques to identify the long-term trends of hydrological time series is investigated in this study. The aim is to analyse trends of low flows at streams in eastern Slovakia, namely Poprad, Hornád, Bodva, Bodrog river basins. The article presents a methodology for prediction of hydrological drought based on statistical testing of low stream flows by non-parametric statistical test. The main objective is to identify low flow trends in the selected 63 river stations in eastern Slovakia. The stations with human impacts are also evaluated. The Mann-Kendall non-parametric test has been used to detect trends in...

Plant physiology at the institute for philosophy in Brno in Mendel's teacher F. Diebl textbook from 1835

Jiří Šebánek

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 277-282 | DOI: 10.11118/actaun201260050277  

Gregor Mendel attended lectures of F. Diebl, professor of natural history and agricultural science at the Institute of Philosophy in Brno. Diebl published his lectures in a textbook "Abhandlungen über die allgemeine und besondere Naturgeschichte, Brünn 1835." From the textbook the level of scientific knowledge in plant biology is obvious, with which the later founder of a new field of biology - genetics got acquainted. Diebl considered germination to be a specific method of fermentation transforming seed starch into a sugary matter which nourishes the germinating plant. In the physiology of nutrition he distinguished nutrition from the soil via roots...