EN
Laser light positively affects most of examined seed species of cultivated plant, causes profitable changes in the plant development and clearly increases their yielding. The range of obtained effects depends on many factors: species, variety, irradiation method, irradiation dose and considerably on thermal-moisture conditions during growth and development of the plants. In recent Polish and foreign literature little information may be found on the research concerning the mechanisms of laser radiation which affects the seeds. Thus, to elucidate closer the problem some detailed, mainly biochemical and physiological, studies would be necessary.