RESEARCH PAPER
Development of new Lemnaceae breeding technology using Apol-humus and biogas plant waste
 
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1
Laboratory of Plant Ecophysiology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha Str. 12/16, 92-237Łódź, Poland
2
Department of Environmental Engineering, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, Warszawska 117, 10-720 Olsztyn, Poland
Publish date: 2019-04-26
Acceptance date: 2018-12-21
 
Int. Agrophys. 2019, 33(3): 297–302
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ABSTRACT
Numerous possibilities of Lemnaceae use (biofuel production, supplementation of animal feed, phytoremediation, bioindication) as well as their cheap production and quick growth offer many novel of benefits. The experiment was carried out in laboratory conditions using the Spirodela polyrrhiza plants. Plant cultivation was carried out in a phytotron room at 24°C, on the liquid standard „Z” medium which was supplemented with various concentrations of Apol-humus. Plant growth, chlorophyll index, net photosynthesis, transpiration, stomatal conductivity, intercellular CO2 concentration, fresh and dry weight were analyzed. The obtained results indicated beneficial effects of the addition of Apol-humus to the standard Z medium. The designed novel technologies were beneficial for growth and development of Spirodela polyrrhiza and produced plants with physico-chemical parameters which surpassed those of the control. Quick growth, high chlorophyll index, much more intensive gas exchange resulted from the presence of fulvic and humic acids as well as chitosan polymers in the medium which originated from Apol-humus and of the substances from waste from methane fermentation. The obtained results confirmed previous assumptions and showed obtaining increased biomass of Spirodela plants and the possibility of using it in biogas plants and for environmental protection.
 
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