Effects of Different LED Lights on the Organogenesis of a Cymbidium Cultivar

Artificial light is a primary source of energy which influence the morphogenesis and growth of plant cell, tissue and organ in tissue culture techniques (Reuveni and Evenor, 2007). For commercial micropropagation, using LEDs as a radiation source is increasing. To find out a optimum lighting condition is very importat for mass propagation of orchids. The effects of LED lights were studied in various orchid species (Anuchai and Hsieh, 2017; Kaewjampa and Shimasaki, 2012; Mengxi et al., 2011; Ramírez-Mosqueda et al., 2017). But most of the studies focus on red and blue LEDs. Hence, this study was taken to investigate effect of monochromic green LED, and alternating lighting condition of red, blue and green LEDs on PLB proliferation, fresh weight, shoot and root formation by protocorm-like bodies of a Cymbidium cultivar.