Under these lights, linear responses were observed for bud number (Figure 1). The highest bud number per explant and per subculture was estimated for the sucrose concentration of 34.9g L-1 under red LEDs (8.5 buds); 31.7g L-1 under Growlux lamps (14.7 buds); and 30.9g L-1 under white fl uorescent lamps (11.6 buds).