Genetic diversity assessment of sorghum (Sorghum bicolor (L.) Moench) accessions using single nucleotide polymorphism markers

Afolayan, G and Deshpande, S P and Aladele, S E and Kolawole, A O and Angarawai, I I and Nwosu, D J and Michael, C and Blay, E T and Danquah, E Y (2019) Genetic diversity assessment of sorghum (Sorghum bicolor (L.) Moench) accessions using single nucleotide polymorphism markers. Plant Genetic Resources: Characterization and Utilization (TSI), 17 (5). pp. 412-420. ISSN 1479-2621

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Sorghum (Sorghum bicolor (L.) Moench) is an important resource to the national economy and it is essential to assess the genetic diversity in existing sorghum germplasm for better conservation, utilization and crop improvement. The aim of this study was to evaluate the level of genetic diversity within and among sorghum germplasms collected from diverse institutes in Nigeria and Mali using Single Nucleotide Polymorphic markers. Genetic diversity among the germplasm was low with an average polymorphism information content value of 0.24. Analysis of Molecular Variation revealed 6%variation amonggermplasmand 94%withingermplasms.Dendrogramrevealed threegroupsof clusteringwhich indicatevariationswithinthegermplasms. Privatealleles identified inthesorghum accessions from National Center for Genetic Resources and Biotechnology, Ibadan, Nigeria and International Crop Research Institute for the Semi-Arid Tropics, Kano, Nigeria shows their prospect for sorghum improvement and discovery of new agronomic traits. The presence of private alleles and genetic variation within the germplasms indicates that the accessions are valuable resources for future breeding programs.

Item Type: Article
Divisions: Research Program : West & Central Africa
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords: Accessions, Genetic diversity, Single nucleotide Polymorphism, Sorghum
Subjects: Mandate crops > Sorghum
Others > Genetics and Genomics
Others > Germplasm
Depositing User: Mr Arun S
Date Deposited: 07 Apr 2020 12:01
Last Modified: 07 Apr 2020 12:06
Official URL:
Acknowledgement: This work was undertaken as part of PhD research for author G. Afolayan and part of CGIAR Research Program (CRP) on Grain Legumes and Dryland Cereals. Authors would therefore like to acknowledge the financial support provided by Dryland Cereals for research fellowship through the West Africa Center for Crop Improvement (WACCI). Authors would also like to appreciate the AllianceforGreenRevolutioninAfrica(AGRA) forscholarship and WACCI for excellent supervision. Also the National Centre for Genetic Resources and Biotechnology (NACGRAB), ICRISAT- Nigeria, ICRISAT- Mali and the InstituteforAgriculturalResearch(IAR),Zaria forproviding the sorghum germplasm for the study.
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