High genetic variability and complex population structure of the native Chinese hazelnut

作   者：Zhen Yang, Zhen Yang, Tiantian Zhao
期刊名称：Brazilian Journal of Botany
影响因子：0.779
卷 期 号：
页     码：
关键词：Corylus mandshurica Genetic differentiation Genetic diversity Molecular marker
论文摘要：
Corylus mandshurica Maxim. belongs to the family Betulaceae and is an important economically and ecologically tree in
China. Wild Corylus mandshurica resources have been gradually destroyed recently. Thus, investigation into the genetic
diversity and genetic differentiation is indispensable for the efficient protection and breeding of Corylus mandshurica
resources. A total of 347 individuals collected from 12 natural populations were investigated using amplified fragment
length polymorphism markers. All 12 Corylus mandshurica populations showed various degrees of genetic diversity, with
the value for the Mudanjiang, Heilongjiang Province population reflecting maximum genetic diversity. A UPGMA dendrogram
was classified into two main clusters (Cluster I and Cluster II). Moreover, STRUCTURE analysis showed that the
result of the divisions at K = 2 was highly related to the UPGMA dendrogram and PCoA scatter plot. The results of both
FST and AMOVA suggested that there was low genetic differentiation among different populations. The high level of gene
flow among populations can effectively prevent genetic drift. BARRIER analysis indicated that the first barrier boundary
located between Cluster I and Cluster II was probably caused by the Yanshan Mountains. Our study provides valuable
information for Corylus mandshurica conservation and breeding in the future.