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Velikost kořenového systému pšenice seté ve vazbě na výnos biomasy
Němec, Ondřej
The bachelor thesis deals with the influence of the size of root system on the grain yield of wheat (Triticum aestivum L.). In the literature review, there is a description of the origin and anatomical structure of the root system, the description of the abiotic factors (lack of water, air temperature and mineral nutrition) and their influence on the properties of the root system and also the relationship between the root system size and grain yield of cereals. The second part of the thesis is focused on methods of studying the root system by electrical capacity. The practical part evaluated the size of the root system (RSS) of the selected varieties of wheat sown in the field experiment. The RSS was measured at three growth stages (columning, earing and filling grains) by the method of electric capacity. It was found that there are statistically conclusive differences in the RSS between the varieties of wheat with different baking quality, of which the category B had the largest root system in stem elongation and category C during the grain filling. The influence of the root system size on grain yield was not statistically conclusive, however, the positive correlation between the RSS at the stage of grain filling with grain yield (r=0.433) was detected.
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Hodnocení velikosti kořenového systému a výnosu u vybraných odrůd řepky ozimé
Černý, Petr
Six varieties of winter oilseed rape were measured according to the size of the root system and its electrical capacity. The size of the root system was measured by using LCR Meter ELC 131 D. The measurements were performed at the research station of ÚKZÚZ in Pusté Jakartice in the growth stages of stem elongation, bud formation and flowering. The results proved differences in the size of the root system. The highest values of the root system were found in variety Bonanza and lowest values in variety DK Explicit. The other part was harvest, weigh samples and determinate thousand seed weigh. In the final there was evaluated relationship between the root system size, yield and thousand seed weigh.
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Produkce biomasy ječmene setého v závislosti na parametrech kořenového systému
Foltýn, Martin
The thesis deals with production of biomass of spring barley (Hordeum vulgare, L.) depending on the parameters of a root system. The theoretical part is focused on the methods of assessment of root system of plants, the influence of environment and genotype on the qualities of a root system of plants and on the relation between the parameters of a root system and the yield of field crops. Another part of the thesis is a statistical assessment of the results of a field experiment with spring barley, which was realized in the locality Hořejší Kunčice in 2014 and in the localities Hrubčice and Želešice in 2012 and 2013. By means of the method of measuring electrical capacity, the size of the root system of four varieties of spring barley and their hybrids was assessed in three development stages: BBCH 36, BBCH 55 and BBCH 71. The yield of grain and the yield of biomass were assessed in the stage BBCH 89. An important influence of the size of the root system on the yield of grain in stage BBCH 55 (r = 0,643*) was discovered in 2013 in Hrubčice. In Želešice, 2013, an important influence of the size of the root system on the yield of grain was found in all the examined development stages, BBCH 36 (r = 0,650*), BBCH 55 (0,824*) and in the stage BBCH 71 the influence was highly important (r = 0,839**).
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