Genetic diversity of Beiyuan tribute tea germplasms and their genetic rela-tionship with Qingxinwulong
To enhance the excavation,protection and utilization of excellent Beiyuan tribute tea germplasm re-sources,the genetic diversity of Beiyuan tribute tea germplasms and their genetic relationship with Qingxinwulong were ana-lyzed using the EST-SNP molecular marker technique.Forty-nine SNP loci with strong polymorphism were screened out,which were suitable for identifying the genotyping of Beiyuan tribute tea germplasm and analyzing its genetic relationship with Qingxinwulong,and the PCoA principal component analysis,hierarchical phylogenetic tree construction and genetic distance analysis were carried out.The results showed that the germplasm resources of Beiyuan tribute tea had abundant ge-netic diversity,and the genetic distance among the six tea groups ranged from 0.021 to 0.137.The century-old oolong tea garden in Dongfeng Town,the core producing area of Beiyuan tribute tea,was an ancient tea garden with mixed planting of sexual and asexual.Qingxinwulong(Tai-wan)and Aijiaowulong(Wuyishan)were closely related to the centennial oolong germplasm of Beiyuan tribute tea.According to the analysis of genetic relationship,it was speculated that Qingxinwulong(Taiwan),Ruanzhiwulong(Taiwan)and Aijiaowulong(Wuyishan)might be derived from Jian'ou Beiyuan tribute tea producing area.
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