Ứng dụng đèn led trong vi nhân giống cây gừng (Zingiber officinale Rosc.)

Abstract

Currently, fluorescent lamps are often used as lighting systems in the tissue culture. These lamps consumed a lot of power. Recently, the use of LED lamp systems for planting was being noticed because LEDs were more conducive to tissue culture and less power consumption. In this study, the effects of mineral content, sugar concentration and monochromatic light on ginger’s growth were investigated. The results showed that ginger plant cultured in SH medium (Schenk and Hildebrandt, 1972) had higher height and diameter than in other media. The experiment using different sugar concentration, explants get the best growth when they were cultured in medium supplemented with 30 g/l sucrose. The next experiment, explants were placed in different types of light sources including, red LED, blue LED, or combination of red with blue light in 9: 1; 8: 2; 7: 3; 6: 4; 5: 5 ratios, fluorescent lamps, red fluorescent lamps, blue fluorescent lamps. The results showed that the red LED was suitable for the growth of ginger. The plant height (4.55 cm), leaf area (2.66 mm2) and root diameter (3.83 mm) was significantly higher than that of the other treatments. In the nursery, plants under cultivation of red LED were good growth and a survival plantlet ratio obtained over 96%.