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Rozdíl ve zpracování pšenice a žita na mouku
Procházková, Iveta
This bachelor thesis is focused on the difference between flour production from wheat and from rye. The work is in the form of literary recherche. There are two parts, the first one focuses on the caryopsis structure and chemical components. The main difference in chemical components of wheat and rye is that the wheat gluten is composed of proteins whereas rye gluten is composed of non-starch polysaccharides and pentosanes. The second part describes the technology of grain processing from the intake, through the milling, where there are different diameters of milling rollers for wheat and for rye. The work delienates the mixing, expedition and characteristics of the single types of passage flours. It also characterizes the given machines and their function in the grain flow and the following grist by the mill another difference between wheat and rye is the colour of the flour, which is caused by the diverse content of the covering layers. The last part evaluates the given problematic of the mill technology.
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Induction of suppressive soil by introduction of mycoparasitic fungi against important plant pathogens
STREJČKOVÁ, Monika
This M. Sc. thesis is based on using of mycoparasitic fungi Trichoderma virens, Clonostachys rosea f. catenulata in biological control against phytopathogenic fungi Sclerotinia sclerotiorum, Rhizoctonia solani, Botrytis cinerea and Fusarium solani. The efficacy of mycoparasitic fungi against pathogens was evaluated in dual cultural tests. The strains of T. virens and C. rosea f. catenulata isolated from soils in the Czech Republic were tested in the experiment. Reference strain was GL 21 fungus T. virens reisolated from commercially available bio-preparation SoilGard and strain C. rosea f. catenulata reisolated from Prestop Mix. All the strains were tested for biological and production properties. All strains are able to colonize the substrate and to suppress the growth and development of pathogens. Strain GL 21 of T. virens was used for seed coating of variety Scirocco in combination with products Guar gum and Carboxymethyl cellulose, which served as a carrier for stick on conidia. After 3 days, the effect of fungus T. virens was evaluated on energy of germination, development of roots of grain. The grain health was determined after 7 days. The fungus T. virens has a positive effect on the grains germination and grain health. During the vegetation the influence of seed coating by T. virens was observed on growth and development of spring wheat. The parameters such as number of plants per m2, tiller numbers, plants health, stand height, number of grains in the spike and thousand grain weight (TGW) were evaluated. During the vegetation the fungus T. virens has positive effect on the plant height.
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