Laser influence to biosystems

Abstract

In this paper a continous (cw) lasers in visible region were applied in order to study the influence of quantum generator to certain plants. The aim of such projects is to analyse biostimulation processes of living organizms which are linked to defined laser power density thresholds (exposition doses). The results of irradiation of corn and wheat seeds using He-Ne laser in the cw regime of 632.8nm, 50mW are presented and compared to results for other laser types. The dry and wet plant seeds were irradiated in defined time intervals and the germination period plant was monitored by days. Morphological data (stalk thickness, height, cob lenght) for chosen plants were monitored. From the recorded data, for the whole vegetative period, we performed appropriate statistical data processing. One part of experiments were the measurements of coefficient of reflection in visible range. Correlation estimations were calculated and discussed for our results. Main conclusion was that there were a significant increments in plant's height and also a cob lenght elongation for corn.