Analysis of genetic variation and advanced trees selection of Zelkova schneideriana.

In this study,twenty three varieties of Zelkova in the same area were measured at different developmental stage,the changing foliage color were detected and the determinations of anthocyanin content in the leaves through various stages were operated. Genetic diversity and similarity were analyzed in molecular level and the purpose of this study is further perfecting the evaluation of species resource in Zelkova schneideriana.The result showed that a total of 128 bands based on 20 primers were detected,out of which 116 were polymorphic(89.9%).As analyzed by POPGENE32,the average value of effective number of alleles,Nei's gene diversity and shannon's information index were 1.5930,0.3394,0.5007,respectively.Clustering analysis showed that the 23 varieties of Zelkova schneideriana could be distinctively classified into four groups.This result can provide theoretical basis for breeding of Zelkova schneideriana single plant.