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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Large crabgrass (\kur{Digitaria sanquinalis}) a weed or a crop?
 PAUROVÁ, Natálie
The aim of this bachelor thesis was to collect all available information about the occurrence, spread, nutritional value and use of species from the genus Digitaria with the emphasis on the Digitaria sanguinalis in the form of a literature review. Large crabgrass is currently considered a weed plant for its spread in tropical, subtropical and temperate areas. The importance of its regulation in crop stands increases year after year. Its use as a cereal fell into forgetfulness. Other Digitaria species, especially Digitaria iburua and Digitaria exilis, grown in Africa are currently considered a "super food" due to the high level of sulphur amino acids (methionine a cysteine) in the grain.
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Puccinelia distans and Digitaria sanguinalis as a phenomenon of road verges
 LAXOVÁ, Lenka
The main subject of this bachelor thesis is establishment the main phenological phases of two grass species Puccinelia distans and Digitaria sanguinalis, which occur in vegetation bands along the roads. It also deals with change of their dominance during one with higher soil salinity along roads near the town České Budějovice. The soil conductivity on road verges was measured, too. Collected information and field data from certain localities were proccesed into tables, diagrams and summary resuls. The tendency in phenological phases exchange confirmed propagation and existence of theese two species on joint area during thge spring and summer seasons. It shows an adaptation of both plants into salt contaminated soil. Soil conductivity shows fluctuating trend in soil salinity during the year on road verges
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První údaj o resistenci Digitaria sanguinalis vůči atrazinu v České republice
 Salava, J. ; Chodová, D. ; Kočová, M. ; Krahulec, František
A survey on the occurrence of weeds surviving treatment with atrazine was carried out at the railways in the Czech Republic in 2000-05. Large crabgrass was widely distributed at the surveyed railway junctions. Seeds of large crabgrass were collected from plants growing in the surroundings of the railway station Prague-Bubny in 2003 and 2004. Resistance or susceptibility to atrazine was verified by the whole-plant response and chlorophyll fluorescence assays. A region of the psbA gene encoding D1 protein of Photosystem 2 was amplified by PCR and sequenced to determine the molecular basis for the atrazine resistance. It was found out that the resistance in the Prague-Bubny large crabgrass biotype was conferred by a glycine for serine substitution at residue 264 of the Dl protein of Photosystem 2. There was an excellent correspondence between the presence of the mutation and phenotypic resistance to atrazine of individual plants.
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