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Methodology for co-cryostorage of virus isolates in their host plants and relevant data
Bilavčík, A. ; Bjerkestrand, R. ; Bjelland, B. ; Blystad, D.-R. ; Bobrova, O. ; Fránová, Jana ; Faltus, M. ; Hamborg, Z. ; Hammond Hammond, S. D. ; Koloniuk, Igor ; Zámečník, J.
Currently, the nursery production of plant material emphasizes the production of healthy, virus-free material. For this reason, it is necessary to have reference plant materials in which the virus is present. Some types of viruses are difficult to maintain outside the plant host. Because of the potential transmission to outdoor plantings, it is necessary to keep infected plants in special cultivation areas, and net-houses, which brings considerable financial and labour costs. Therefore, a methodology was developed in which the virus status in plant material is analysed, the infected material can be stored using cryopreservation in liquid nitrogen and then regenerated in vitro, and relevant data in GeneEver cryobox can be stored.
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Virus eradication method by cryopreservation tool - a cryoknife
Bilavčík, A. ; Bobrova, O. ; Faltus, M. ; Fránová, Jana ; Hammond, S. ; Koloniuk, Igor ; Zámečník, J.
Currently, in the nursery production of plant material, emphasis is placed on the propagation of healthy material. For this reason, it is necessary to pay attention to the topic of healthy virus-free nuclear stock when preserving collections of genetic resources of vegetatively propagated plants. Some raspberry viruses are difficult to remove from the plant host by existing methods of thermotherapy or chemotherapy. That is why, using the example of black raspberry necrosis virus (BRNV), a comprehensive methodology for testing health status and cryotherapy in raspberry was developed. The resulting methodical procedure makes it possible to eradicate BRNV from raspberry using cryotherapy of in vitro cultures. The user of the methodology is the Ministry of Agriculture, which applies it as part of the 'National Program for the Conservation and Use of Genetic Resources of Plants, Animals and Microorganisms Important for Nutrition and Agriculture'.
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Methodology of cryoconservation of in vitro cultures of fruit trees
Bilavčík, Alois ; Faltus, Miloš ; Zámečník, Jiří
The purpose of the methodology is to store selected genotypes of fruit trees, especially apple and pear trees, in conditions of cryogenic temperatures within the National Program. The newly created methodology will enable efficient and effective cryopreservation of genetic resources of selected fruit trees. The methodology brings newly defined encapsulation dehydration procedures of cryopreservation optimized using the thermal method of differential scanning calorimetry.
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Industrial quartz
Pacák, Karel ; Matějka, Dobroslav (advisor) ; Faltus, Miloš (referee)
This thesis deals with SiO2 minerals, with main focus on the mineral quartz, which is one of the most common crust forming minerals. It informs about various SiO2 modifications, describing internal structure, physical and chemical characteristics, which give the SiO2 minerals their valuable properties in industrial use. Thesis also tracks abundance of these minerals in nature and describes qualitative criteria used to classify them in the manufacturing industry. There are several industrial applications of these minerals described.
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Olivine and his industrial uses
Novotný, Petr ; Matějka, Dobroslav (advisor) ; Faltus, Miloš (referee)
This thesis is focused on the minerals olivine group, and their bearing deposits and practical use in industry. Specifies the structural, chemical and physical properties of minerals and is a prominent member of the group of olivine, which are given their distinctive characteristics. It also discusses the world's largest producers of olivine and especially the specific uses of this mineral, especially for industrial purposes. Keywords Olivine, olivine group, refractory materials, abrasive water jet cutting
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Apple dormant bud cryopreservation: Methodology
Bilavčík, Alois ; Faltus, Miloš ; Zámečník, Jiří
In the Czech Republic, ex situ and in vitro conservation is used for apple tree germplasm conservation. In relation to the strategy of maintenance of broad genetic potential of apple tree, there is a necessity to preserve genotypes by storage at ultralow temperatures – cryoconservation. Based on broad spectrum of apple cultivars, an optimised dormant bud cryopreservation protocol was developed. The developed cryoprotocol enables to establish a safe backup storage system for ex situ and in vitro collections of apple tree germplasm. The Ministry of Agriculture of the Czech Republic is the user of this methodology and it will utilize it in the framework of “National Programme on Conservation and Utilization of Plant, Animal and Microbial Genetic Resources for Food and Agriculture”.
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Blast furnace slag as a component of hydraulic binders
Velebný, Josef ; Faltus, Miloš (advisor) ; Kuchařová, Aneta (referee)
The aim of this work is to evaluate blast furnace slag as an additive in hydraulic binders. These additives favorably affect the mechanical, chemical and phase properties of cements and binders on their basis. Basic structural and chemical analyzes of studied slags and reference cement and structural analyzes of hydrated binders were carried out on their basis. Furthermore, this thesis deals with testing and comparison of mechanical properties of mortar test bodies based on Reference Portland cement itself and with the addition of finely ground granulated and air cooled blast furnace slag and the development of these properties over time. Subsequently, these results are compared and made out about the usability of the studied materials for the production of hydraulic binders as compared to cements without added slag depending on time. Testing of mechanical properties according to the relevant standard ČSN EN 12390. Attention is paid mainly to the development of compressive strength and flexural tension. The XRD and XRF methods were used to study the phase and chemical composition of studied materials and hydrated binders based on these. Keywords: Slag, portland slime, hydraulic binder, Portland cement, blast furnace slag, phase composition, glass phase, latent hydraulicity, pozolanita, alkaline...
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