ISSR-based molecular characterization of an elite germplasm collection of sweet potato (Ipomoea batatas L.) in China
Open accessAbstract
To determine the genetic diversity and population structure of sweet potato accessions cultivated in China, and to establish the genetic relationships among their germplasm types, a representative collection of 240 accessions was analyzed using inter-simple sequence repeat (ISSR) markers. The mean genetic similarity coefficient, Nei's gene diversity, and shared allele distance of tested sweet potato accessions were 0.7302, 0.3167 and 0.2698, respectively. The 240 accessions could be divided into six subgroups and five subpopulations based on neighbor-joining (NJ) clustering and STRUCTURE results, and obvious genetic relationships among the tested sweet potato accessions were identified. The marker-based NJ clustering and population structure showed no distinct assignment pattern corresponding to flesh color or geographical ecotype of the tested sweet potato germplasm. Analysis of molecular variance (AMOVA) revealed small but significant difference between white and orange-fleshed sweet potato accessions. Small but significant difference were also observed among sweet potato accessions from the Southern summer-autumn sweet potato region, the Yellow River Basin spring and summer sweet potato region and the Yangtze River Basin summer sweet potato region. This study demonstrates that genetic diversity in the tested sweet potato germplasm collection in China is lower than that in some reported sweet potato germplasm collections from other regions. Pedigree investigations suggest that more diverse Chinese sweet potato varieties should be formed by broadening the selection scope of breeding parents and incorporating the introduced varieties into future breeding programs.
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Cultivar Yushu No. 8 was found to be more remotely related to the other tested genotypes.
“Similar to our genetic diversity analysis of sweet potato germplasm resources based on inter-simple sequence repeat (ISSR) markers (Zhang et al., 2014), cultivar Yushu No. 8 was found to be more remotely related to the other tested genotypes.”
From Development and identification of SSR markers associated with starch properties and β-carotene content in the storage root of sweet potato (Ipomoea batatas L.) (2016) · cites this paper as Zhang et al., 2014
Fengshouhuang and Suyu No. 1 originated from the same agro-ecological zone for sweet potato production in China (the Huang-Huai Basin spring and summer sweet potato region).
“These two varieties originated from the same agro-ecological zone for sweet potato production in China (the Huang-Huai Basin spring and summer sweet potato region, Zhang et al., 2014), and from the same breeding parents (Nancy Hall and Okinawa No. 100, Supplementary Material 1).”
From Development and identification of SSR markers associated with starch properties and β-carotene content in the storage root of sweet potato (Ipomoea batatas L.) (2016) · cites this paper as Zhang et al., 2014
STRUCTURE determines the number and composition of subpopulations based on Hardy-Weinberg equilibrium and linkage equilibrium.
“This method attempts to determine the number and composition of subpopulations based on Hardy-Weinberg equilibrium and linkage equilibrium (Hubisz et al., 2009; Zhang et al., 2014).”
From Development and identification of SSR markers associated with starch properties and β-carotene content in the storage root of sweet potato (Ipomoea batatas L.) (2016) · cites this paper as Zhang et al., 2014
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- Authors
- ZHANG, K., WU, Z.-D., LI, Y.-H., ZHANG, H., WANG, L.-P., ZHOU, Q.-L., TANG, D.-B., FU, Y.-F., HE, F.-F., JIANG, Y.-C., YANG, H., & WANG, J.-C.
- Affiliations
- Southwest University (CN)
- Chongqing Three Gorges Academy of Agricultural Sciences (CN)
- Corresponding author
- ZHANG, Kai
- ORCID
- Venue
- Journal of Integrative Agriculture
- Publisher
- Elsevier BV
- Published
- 2014-11
- Volume
- 13
- Issue
- 11
- Pages
- 2346-2361
- ISSN
- 2095-3119 (ISSN-L)
- OpenAlex
- W2001436789
- Cited by
- 15
- References
- 56
- Citations by year
- 2025: 1 · 2023: 2 · 2021: 1 · 2020: 4 · 2018: 1 · 2016: 4 · 2015: 1 · 2014: 1
- FWCI
- 1.31
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Integrative Agriculture (publishedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Journal of Integrative Agriculture
- Funders
- National Natural Science Foundation of China (31101192, B12006)
- Fundamental Research Funds for the Central Universities (B12006)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
- Life Sciences › Agricultural and Biological Sciences › Horticulture › Cocoa and Sweet Potato Agronomy
- Keywords
- Ipomoea batatas, germplasm collection, genetic diversity, population structure, ISSR markers, flesh color, sweet potato breeding
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