Studies on the superior sugarcane germplasm resources and their utilization in breeding

We have collected and preserved 500 clones of sugarcane germplasm resources. Some superiorgermplasm resources were selected and applied to breeding by studying several varies of sugarcane including Saccharum spontaneum,bamboocane of S.Sinense,S.Officinarum,local chewingcane and commercial varieties. There have 60～80 high quality germplasm resources were induced to flower by photoperiod treatment inducing and successfully applied to sexual hybridization as parents in subtropical zone every year. The achievement of flower induction of chewingcane and bamboocane delayed the bloom of wild type sugarcane and created sugarcane resources with new genetic background such as Mintang 91/211 with high sucrose content,Minzhe 92/117 with high biological yield,Mintang 92/225 with fine characters and some good intermediate materials.