Progress in Genetic Diversity of Picea at Phenotype and Allozyme Level

The progress,problems exited and development trends in genetic diversity of phenotype and allozyme in the past 30 years were reviewed.The phenotype diversity was rich,and the variation of morphological characteristics among populations followed certain geographical variation pattern.The genetic parameters at allozyme were as follows:polymorphic loci percentage 23%～84.6%,mean number of alleles per locus 1.33～2.70,expected heterozygosity 0.016～0.306,number of effective alleles 0.23～1.32,gene differentiation coefficient 0.022～0.110.The variation among populations was 2%～13% of the total while the variation within population was 87%～98%.The coupling study was conducted on the genetic diversity of Picea at phenotype,allozyme and DNA levels.The further studies would be focused on the research on the factors influencing genetic diversity and its structure as well as its application in gene resource conservation strategies.