Genetic fingerprint construction and genetic diversity analysis of sweet potato (Ipomoea batatas) germplasm resources
文献类型： 外文期刊
作者： Luo, Zhongxia 1 ; Yao, Zhufang 1 ; Yang, Yiling 1 ; Wang, Zhangying 1 ; Zou, Hongda 1 ; Zhang, Xiongjian 1 ; Chen, Jingyi 1 ; Fang, Boping 1 ; Huang, Lifei 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Crops Res Inst, Guangdong Prov Key Lab Crops Genet & Improvement, Guangzhou 510640, Guangdong, Peoples R China
关键词： Sweet potato; Germplasm resources; Genetic markers; Genetic fingerprint; Genetic diversity
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundChina is the largest producer of sweet potato in the world, accounting for 57.0% of the global output. Germplasm resources are the basis for promoting innovations in the seed industry and ensuring food security. Individual and accurate identification of sweet potato germplasm is an important part of conservation and efficient utilization.ResultsIn this study, nine pairs of simple sequence repeat molecular markers and 16 morphological markers were used to construct genetic fingerprints for sweet potato individual identification. Combined with basic information, typical phenotypic photographs, genotype peak graphs, and a two-dimensional code for detection and identification were generated. Finally, a genetic fingerprint database containing 1021 sweet potato germplasm resources in the "National Germplasm Guangzhou Sweet Potato Nursery Genebank in China" was constructed. Genetic diversity analysis of the 1021 sweet potato genotypes using the nine pairs of simple sequence repeat markers revealed a narrow genetic variation range of Chinese native sweet potato germplasm resources, and Chinese germplasm was close to that from Japan and the United States, far from that from the Philippines and Thailand, and the furthest from that from Peru. Sweet potato germplasm resources from Peru had the richest genetic diversity, supporting the view that Peru is the center of origin and domestication of sweet potato varieties.ConclusionsOverall, this study provides scientific guidance for the conservation, identification, and utilization of sweet potato germplasm resources and offers a reference to facilitate the discovery of important genes to boost sweet potato breeding.
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