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Genetic relationship and pedigree of Chinese watermelon varieties based on diversity of perfect SNPs

文献类型： 外文期刊

作者： Yang, Jingjing 1 ; Zhang, Jian 1 ; Du, Hushan 1 ; Zhao, Hong 1 ; Mao, Aijun 1 ; Zhang, Xiaofei 1 ; Jiang, Luo 1 ; Zhang, Haiying 1 ; Wen, Changlong 1 ; Xu, Yong 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr BVRC, Natl Engn Res Ctr Vegetables, Beijing 100097, Peoples R China

2.MOAR, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 100097, Peoples R China

3.Beijing Key Lab Vegetable Germplasms Improvement, Beijing 100097, Peoples R China

4.State Key Lab Vegetable Germplasm Innovat, Tianjin 300380, Peoples R China

关键词： Watermelon; Perfect SNP; Genetic relationship; Pedigree; Variety identification

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：4.24； ）

ISSN： 2095-9885

年卷期： 2022 年 8 卷 4 期

页码：

收录情况： SCI

摘要： Watermelon (Citrullus lanatus) is one of the world's most important fruit crops, and China produces the most watermelons in the world. Recently, a watermelon variome consisting of 414 key resequenced accessions was reported. However, the genetic relationships and pedigree of Chinese watermelon varieties in the seed market remain unclear. In this study, 241 evenly distributed perfect single nucleotide polymorphisms (SNPs) derived from the watermelon variome were selected for variety identification. The diversity of 247 Chinese watermelon varieties was identified based on their SNP genotypes. The 247 watermelon varieties were clustered into five subpopulations: the East Asian ecotype, inter-mediate ecotype, small fruit with red flesh ecotype, small fruit with yellow flesh ecotype, and American ecotype. We further established the pedigree of four subpopulations, of which JingXinNo.1, ZaoChunHongYu, HuangXiaoYu and XiaoLan, and Sugarlee were the main doner of the East Asian ecotype, small fruit with red flesh ecotype, small fruit with yellow flesh ecotype, and American ecotype, respectively. Thirty-two core SNPs were selected and applied in watermelon variety identification. They were also validated by the Kompetitive allele-specific PCR (KASPar) platform. The present study furthered our understanding of the genetic relationships and pedigree of watermelon varieties in China, and will help to manage the plant variety protection in watermelon.

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