Abstract The experiment was conducted in Hainan Sugarcane Breeding Station in 1994. Bedila and four bamboo cane varieties from Fujian,Guangxi,Guangdong and Jisngxi were used for floral induction with three constant daylengths (12 hr, 12 hr 15 min and 12 hr 25 min) and two daylength decline rates(15 see/day and 30 see/day). The results showed that the constant daylensth of 12 hr 25 min is more suitable for badila and bamboo cane for floral induction;daylength decline rates of 15 see/day and 30 sec/day are suitable for badila and bamboo cane respectively. Bedila and bamboo cane varieties as female parents, were crossed with S. arundinaceum, S. spontaneum, etc,producing a lot of progeny. The bamboo cane varieties were also found to have a little fertile pollen and could produce some seedlings by self-cross. This suggested that the bamboo cane varieties might be used for male patent in future crossing.