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Assessment of Genetic Diversity and Discovery of Molecular Markers in Durian (Durio zibethinus L.) in China

文献类型: 外文期刊

作者: Lin, Xinge 1 ; Liu, Xiaodi 1 ; Chen, Meigu 1 ; Gao, Hongmao 1 ; Zhu, Zhenzhong 1 ; Ding, Zheli 1 ; Zhou, Zhaoxi 1 ;

作者机构: 1.Chinese Acad Trop Agr Sci, Haikou Expt Stn, Haikou 571101, Hainan, Peoples R China

关键词: crop improvement; genomics; marker-assisted selection; single nucleotide polymorphism; simple sequence repeats

期刊名称:DIVERSITY-BASEL ( 影响因子:3.029; 五年影响因子:2.905 )

ISSN:

年卷期: 2022 年 14 卷 9 期

页码:

收录情况: SCI

摘要: Durian (Durio zibethinus L.) is a crop of economic and health importance globally. Efforts are being made to revamp China's only successful commercial-scale durian plantations in Hainan; however, their genetic base is unknown. Therefore, the present study was undertaken to assess the genetic base and population structure of 32 genotypes in durian plantation sites in Hainan, China, and develop simple sequence repeat (SSR) markers by whole genome sequencing through restriction site-associated DNA sequencing technology to facilitate germplasm conservation and breeding. The results from identity by state (IBS), phylogenetic tree, population structure, and principal component analysis grouped the 32 genotypes into two clusters/sub-populations. Based on IBS, genotypes in Cluster I are largely duplicated genotypes; however, results from the model-based population structure demonstrated that most of the genotypes in Sub-population II shared a common genetic background with those in Sub-population I/Cluster I. The results revealed that the core durian collection in the plantation sites in Hainan include D24, D101, MSW, JH, D163, HFH, and NLX-5. In addition, we developed a total of 79,178 SSR markers with varied lengths and amplicon sizes. The genetic diversity and population structure reported in this study will be useful for durian conservation and utilization. In addition, the discovered and developed SSR markers will lay the foundation for molecular breeding via marker-assisted selection, quantitative trait loci mapping, and candidate gene discovery and validation.

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