Abstract: The height growth variation of Phellodendron amurense was analyzed. The studied materials are two years old seedlings in Qing Mountain forestry center of Linkou county. The study shows that there are rich variations within the different germplasm resources. The variation parameter fluctuates among germplasm resources is from 20.10%~31.2%. The height growth of the different germplasm resources reaches the extreme marked level, the height in the germplasm resources of Xinglong, Fangzheng and Yingchun are the fastest, medium in Qingshan and Weihe, and the lowest in Jiayin germplasm resources. The height growth of the Xinglong germplasm resources is faster 56.5% than that of Jiayin. There are rich variations within the Xinglong germplasm resources, the variation coefficient is 14.4%~23.4%, the average value is 18.6%. The differences between seedling height of families reach the extreme marked level. There are rich variations within the Jiayin germplasm resources and families. the variation coefficient is 12.7%~31.0%, the average value is 21.9%. The differences between seedling height growth of families reach reach the extreme marked level. The three families is faster 56.6% than the lower families in the height growth. Jia-6 is faster 75.4% than Jia-11.

Key words: Phellodendron amurense Rupr., Seedling height, Germplasm resource, Families, Variation