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Effect of brassinosteroid and Atonik on growth of onion in different moisture conditions
Pařízková, Lada ; Doležalová, Jitka (advisor) ; Augustinová, Ludmila (referee)
Summary The aim of this study was to investigate the effect of synthetic brassinolide and Atonik, as a growth promoter supporting growth and development of plant that have been grown in different moisture conditions. For experiment were used two species of onion ('Alice'and'Lusy') which had been treated during the growth with synthetic brassinolide solution in concentrations 1.10-9 mol.l-1 and 1.10-11 mol.l-1 and 0.1% concentration of Atonik solution. For controlling was sown untreated variant. Average plant height and later diameter of the neck were observed and recorded during the experiment. Results showed that the product Atonik had in both variants positive influence on plant growth in deficit moisture conditions. Its effects have been later inconclusive or inhibitory. Brassinosteroid had positive effect on growth under optimal moisture conditions in "Lusy's" case and in stressful conditions in "Alice's" case. Brassinostreroid, unlike Atonik product, prevailed in neck diameter efficiency. In both cases, brassinosteroid had more positive effect on average yield in optimal moisture conditions. In deficit moisture conditions had Atonik product more positive effect on the yield of onion in both cases. To verify the results, it is necessary to repeat the experiment several time.

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3 Pařízková, Lenka
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