广西三江茶树种质资源遗传多样性分析

doi:10.13305/j.cnki.jts.2023.02.009

Abstract

Abstract: In order to clarify the genetic diversity of tea genetic resources in Sanjiang, Guangxi, two marker techniques, simple inter-repeat sequence amplification (ISSR) and correlated sequence amplification polymorphism (SRAP) were used to analyze the genetic diversity of 72 local tea genetic resources and five introduced cultivars in Sanjiang region. The results of both marker techniques show high levels of genetic diversity (H=0.30, I=0.44), high genetic differentiation between populations (Gst=0.056) and gene flow (Nm=8.64). The genetic variation observed within populations was much higher than that between populations. The cluster analysis shows that most of the tea genetic resources in Sanjiang were clustered into one group and the introduced cultivars were clustered into the other, which was consistent with the results of PCoA. This study provided evidence at the molecular level for the protection and utilization of tea germplasmin Sanjiang.

Key words: Camellia sinensis, molecular marker, genetic diversity, population structure

CLC Number:

S571.1

MENG Rongjun, CHEN Liang, XU Yuan, LIN Wei, ZHOU Qiwei, XIE Yilin, LAI Dingqing, LAI Jiaye. Genetic Diversity Analysis of Tea Genetic Resources in Sanjiang, Guangxi[J]. Journal of Tea Science, 2023, 43(2): 147-158.

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Genetic Diversity Analysis of Tea Genetic Resources in Sanjiang, Guangxi

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