RT Journal T1 INFLUENCE OF PRE-SOWING HE-NE AND SEMICONDUCTOR LASER STIMULATION ON SAINFOIN SEEDS GERMINATION FOUR AND EIGHT MONTHS POST-HARVEST A1 Dragoslav Djokić A1 Milesa Srećković A1 Zoran Fidanovski A1 Jelena Ilić A1 Rade Stanisavljević A1 Dragan Terzić A1 Jordan Marković A1 Saša Barać JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 27 IS 3 SP 894 OP 900 YR 2017 FD 2017/06/01 DO DOI N/A AB

Sainfoin seeds were irradiated by four different lasers (He-Ne laser, three semiconductor lasers of wavelengths 670 nm, 890 nm and of wavelength range 630-680 nm). Each group of seed was irradiated only once, using different exposure times: 1-, 2-, 3- and 4- minutes. The same procedure was applied before autumn (four months post-harvest) and spring sowing (eight months post-harvest). Laser bio-stimulation showed that the optimal operation of the laser was at 890 nm using 3-minutes exposure time in both sowing periods. Slightly weaker, but also significant (p ≥0.01) impact on improving germination was in case of laser of 890 nm using 2- and 4- minutes of exposure time, and 630-680 nm laser using 4- minutes exposure time in both sowing periods. In the spring sowing, only laser of 632.8 nm using 3- minutes exposure time and laser of 670 nm laser between 2- and 4- minutes exposure time had significant improvement of seed germination. In the autumn sowing, He-Ne lasers (632.8 nm) using 4- minutes exposure time, semiconductor lasers of 670 nm laser using 3- minutes exposure time, and 630-680 nm laser using 3- minutes exposure time, also significantly (p ≥0.01) increased seed germination compared to control.

K1 post-harvest period, sainfoin, seeds, laser stimulation, germination PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2017-JAPS-113