Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (12): 187-199.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0349

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Genetic Diversity Analysis and Molecular Identity Establishment of Clausena lansium Germplasm Resources from Guangdong Province Based on SSR Markers

LU Yu-sheng(), PENG Cheng, CHANG Xiao-xiao, QIU Ji-shui, CHEN Zhe, CHEN Hui-qiong()   

  1. Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640
  • Received:2023-04-15 Online:2023-12-26 Published:2024-01-11
  • Contact: CHEN Hui-qiong E-mail:luyusheng@gdaas.cn;chenhuiqiong@gdaas.cn

Abstract:

This work aims to reveal the genetic diversity and relationship among Guangdong wampee germplasms, and provide reference for the effective protection and efficient utilization of wampee germplasm resources. The wampee germplasms from Guangdong province were examined using 12 pairs of SSR primers to determine their genetic diversity. UPGMA was utilized for cluster analysis, while numerical and letter codes were assigned to create molecular identity cards. The results showed that the 12 pairs of primers generated a total of 43 alleles(Na), with an average of 3.583 alleles per locus in the 84 analyzed materials. The expected heterozygosity(He)ranged from 0.294 to 0.665, with a mean of 0.524. The polymorphism information content(PIC)ranged from 0. 291 to 0.642, with a mean of 0.484. The Shannon information index(I)ranged from 0.567 to 1.096, with a mean of 0.913. The 84 germplasms were divided into six groups based on UPGMA clustering, and molecular identity was established for each examined germplasm resource. Guangdong wampee germplasm resources have high genetic diversity, while their clustering was not strictly conducted by their geographical origins. Based on the SSR genotyping, a digital and letter-based coding method was used to construct the molecular identity card for wampee resources.

Key words: wampee, germplasm resources, SSR, genetic diversity, molecular ID