Population structure and genetic diversity of mango (Mangifera indica L.) germplasm resources as revealed by single-nucleotide polymorphism markers
文献类型： 外文期刊
作者： Liang, Qingzhi 1 ; Pan, Hongbing 3 ; He, Xiaolong 2 ; Wang, Songbiao 2 ; Hou, Yuanhua 1 ; Xiao, Hua 5 ; Xu, Guangzhao 1 ; Yi, Runhua 1 ; Lin, Dongbo 1 ; Yang, Zhuanying 1 ;
作者机构： 1.Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Zhanjiang, Peoples R China
3.Panzhihua Acad Agr & Forestry Sci, Fruits Res Inst, Panzhihua, Peoples R China
4.Yunnan Agr Univ, Coll Trop Crops, Puer, Peoples R China
5.Guangdong Ocean Univ, Coll Elect & Informat Engn, Zhanjiang, Peoples R China
关键词： Mangifera indica; SLAFs; population structure; genetic diversity; SNPs
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.1； 五年影响因子：5.3 ）
ISSN： 1664-462X
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Introduction Mango is a vital horticultural fruit crop, and breeding is an essential strategy to enhance ongoing sustainability. Knowledge regarding population structure and genetic diversity in mango germplasm is essential for crop improvement. Methods A set of 284 mango accessions from different regions of the world were subjected to high-throughput sequencing and specific-locus amplified fragment (SLAF) library construction to generate genomic single-nucleotide polymorphism (SNP). Results After filtering, raw data containing 539.61 M reads were obtained. A total of 505,300 SLAFs were detected, of which, 205,299 were polymorphic. Finally, 29,136 SNPs were employed to dissect the population structure, genetic relationships, and genetic diversity. The 284 mango accessions were divided into two major groups: one group consisted mainly of mango accessions from Australia, the United States, Cuba, India, Caribbean, Israel, Pakistan, Guinea, Burma, China, and Sri Lanka, which belonged to the Indian type (P1); the other group contained mango accessions from the Philippines, Thailand, Indonesia, Vietnam, Cambodia, Malaysia, and Singapore, which belonged to Southeast Asian type (P2). Genetic diversity, principal component analysis (PCA), and population structure analyses revealed distinct accession clusters. Current results indicated that the proposed hybridization occurred widely between P1 and P2. Discussion Most of the accessions (80.99%) were of mixed ancestry, perhaps including multiple hybridization events and regional selection, which merits further investigation.
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