Laser effects on the growth and photosynthesis process in mustard plants (Sinapis Alba)

In this paper we present the results of our experiments concerning the influence of the low energy laser (LEL) radiation Gn the germination, growth and photosynthesis processes in mustard plants (sinapis alba). We used a He-Ne laser (lambda = 632.8 nm, P = 6 mW) to irradiate the mustard seeds with different exposure times. The seeds were sowed and some determinations (the germination and growth intensity, chlorophyll quantity, and respiration intensity) were made on the plant culture. We ascertained that the germination and growth of the plants are influenced by the irradiation. Also, the chlorophyll quantity is the same for both plants from irradiated and non-irradiated seeds but the respiration and photosynthesis processes are influenced by the irradiation.