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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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