Cluster analysis and evaluation of flax germplasm resources

Fourteen traits of 52 germplasm resources from China and abroad were analysed using cluster analysis method. A classification system of flax was established. All germplasm resources involved was divided into 4 groups. GroupⅠ consisted of 10 germplasm. Group Ⅱ consisted of 37 germplasm and may have 2 subgroups, subgroup Ⅰ included main planted germplasm of flax in China. Group Ⅲ consisted of 1 germplasm . Group Ⅵ included 4 germplasm.