Vliv sucha a ošetření semen studeným plazmatem na stavbu a funkci fotosyntetického aparátu brukve řepky olejky

HANZAL, Jaroslav

In the period of global climate changes, the resistance of significant agricultural crops to drought has become from an economical point of view a very important topic. In order to achieve maximum productivity of agricultural crops, it is necessary to search for new technological approaches to enhance this resistance. Currently, one of the actual topics in this area is the possibility of seed treatment with cold plasma. The aim of this work is to reveal the degree of influence of cold-plasma treatment of seeds on the stress response of plants that had been grown under the influence of drought. The oilseed rape was chosen for this experiment intentionally because it remains a substantial agricultural crop with a huge variety of usage. The plants of rapeseed had been grown in fully-controlled conditions in a growth chamber. The selected photosynthetic characteristics had been checked in regular intervals and the stress response was evaluated on two variables: plants grown from seeds treated with cold plasma and plants grown from commonly used seeds. In total, three measurements of chlorophyll fluorescence and photosynthetic pigment content have been conducted. The first measurement in the beginning of development of the seedlings showed better drought resistance in nontreated seedlings but in the following second and third measurements it was vice versa: cold-plasma treated plants survived better in dry conditions. Results of the analysis of photosynthetic pigments suggest that the cold plasma treatment can obviously increase the resistance of seedlings of rape especially in conditions of long-term drought.

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