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The pattern of genetic variability in a core collection of 2,021 cowpea accessions
| Content Provider | Consultative Group on International Agricultural Research (CGIAR) |
|---|---|
| Author | Fiscus, C.J. Herniter, I. A. Tchamba, M. Paliwal, R. Muñoz-Amatriaín, M. Roberts, P.A. Abberton, M.T. Alaba, O. Close, T.J. Oyatomi, O. Koenig, D. |
| Spatial Coverage | Nigeria [NG] |
| Description | Cowpea is a highly drought-adapted leguminous crop with great promise for improving agricultural sustainability and food security. Here, we report analyses derived from array-based genotyping of 2,021 accessions constituting a core subset of the world's largest cowpea collection, held at the International Institute of Tropical Agriculture (IITA) in Ibadan, Nigeria. We used this dataset to examine genetic variation and population structure in worldwide cowpea. We confirm that the primary pattern of population structure is two geographically defined subpopulations originating in West and East Africa, respectively, and that population structure is associated with shifts in phenotypic distribution. Furthermore, we establish the cowpea core collection as a resource for genome-wide association studies by mapping the genetic basis of several phenotypes, with a focus on seed coat pigmentation patterning and color. We anticipate that the genotyped IITA Cowpea Core Collection will serve as a powerful tool for mapping complex traits, facilitating the acceleration of breeding programs to enhance the resilience of this crop in the face of rapid global climate change. |
| Sponsorship | International Maize and Wheat Improvement Center Crop Trust CGIAR Trust Fund |
| Related Links | https://cgspace.cgiar.org/items/477b891a-014a-453f-828c-f5a567ed07b6 |
| File Format | |
| ISSN | 21601836 |
| DOI | 10.1093/g3journal/jkae071 |
| Journal | G3-Genes Genomes Genetics |
| Issue Number | jkae071 |
| Volume Number | 14 |
| Language | English |
| Publisher | Oxford University Press |
| Access Restriction | Open |
| Rights License | CC-BY-4.0 |
| Subject Keyword | Biotech & Plant Breeding Cowpeas Population Structure Genome-wide Association Studies Seed Pigmentation Cowpea Aflatoxin Crop Systems Food Security |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science Food Science Plant Science |
