Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers
Crop genetic diversity is a sine qua non for continuous progress in the development of improved varieties, hence the need for germplasm collection, conservation and characterization. Over the years, cowpea has contributed immensely to the nutrition and economic life of the people in Togo. However, t...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2021
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/115740 |
| _version_ | 1855526043110080512 |
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| author | Gbedevi, K.M. Boukar, O. Ishikawa, H. Abe, A. Ongom, P.O. Unachukwu, N. Rabbi, I.Y. Fatokun, C. |
| author_browse | Abe, A. Boukar, O. Fatokun, C. Gbedevi, K.M. Ishikawa, H. Ongom, P.O. Rabbi, I.Y. Unachukwu, N. |
| author_facet | Gbedevi, K.M. Boukar, O. Ishikawa, H. Abe, A. Ongom, P.O. Unachukwu, N. Rabbi, I.Y. Fatokun, C. |
| author_sort | Gbedevi, K.M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Crop genetic diversity is a sine qua non for continuous progress in the development of improved varieties, hence the need for germplasm collection, conservation and characterization. Over the years, cowpea has contributed immensely to the nutrition and economic life of the people in Togo. However, the bulk of varieties grown by farmers are landraces due to the absence of any serious genetic improvement activity on cowpea in the country. In this study, the genetic diversity and population structure of 255 cowpea accessions collected from five administrative regions and the agricultural research institute of Togo were assessed using 4600 informative diversity array technology (DArT) markers. Among the regions, the polymorphic information content (PIC) ranged from 0.19 to 0.27 with a mean value of 0.25. The expected heterozygosity (He) varied from 0.22 to 0.34 with a mean value of 0.31, while the observed heterozygosity (Ho) varied from 0.03 to 0.07 with an average of 0.05. The average inbreeding coefficient (FIS) varied from 0.78 to 0.89 with a mean value of 0.83, suggesting that most of the accessions are inbred. Cluster analysis and population structure identified four groups with each comprising accessions from the six different sources. Weak to moderate differentiation was observed among the populations with a genetic differentiation index varying from 0.014 to 0.117. Variation was highest (78%) among accessions within populations and lowest between populations (7%). These results revealed a moderate level of diversity among the Togo cowpea germplasm. The findings of this study constitute a foundation for genetic improvement of cowpea in Togo. |
| format | Journal Article |
| id | CGSpace115740 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1157402025-11-11T10:18:17Z Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers Gbedevi, K.M. Boukar, O. Ishikawa, H. Abe, A. Ongom, P.O. Unachukwu, N. Rabbi, I.Y. Fatokun, C. cowpeas vigna unguiculata germplasm genetic diversity population structure genetic markers togo Crop genetic diversity is a sine qua non for continuous progress in the development of improved varieties, hence the need for germplasm collection, conservation and characterization. Over the years, cowpea has contributed immensely to the nutrition and economic life of the people in Togo. However, the bulk of varieties grown by farmers are landraces due to the absence of any serious genetic improvement activity on cowpea in the country. In this study, the genetic diversity and population structure of 255 cowpea accessions collected from five administrative regions and the agricultural research institute of Togo were assessed using 4600 informative diversity array technology (DArT) markers. Among the regions, the polymorphic information content (PIC) ranged from 0.19 to 0.27 with a mean value of 0.25. The expected heterozygosity (He) varied from 0.22 to 0.34 with a mean value of 0.31, while the observed heterozygosity (Ho) varied from 0.03 to 0.07 with an average of 0.05. The average inbreeding coefficient (FIS) varied from 0.78 to 0.89 with a mean value of 0.83, suggesting that most of the accessions are inbred. Cluster analysis and population structure identified four groups with each comprising accessions from the six different sources. Weak to moderate differentiation was observed among the populations with a genetic differentiation index varying from 0.014 to 0.117. Variation was highest (78%) among accessions within populations and lowest between populations (7%). These results revealed a moderate level of diversity among the Togo cowpea germplasm. The findings of this study constitute a foundation for genetic improvement of cowpea in Togo. 2021 2021-10-29T10:52:57Z 2021-10-29T10:52:57Z Journal Article https://hdl.handle.net/10568/115740 en Open Access application/pdf MDPI Gbedevi, K.M., Boukar, O., Ishikawa, H., Abe, A., Ongom, P.O., Unachukwu, N., ... & Fatokun, C. (2021). Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers. Genes, 12(9), 1451: 1-14. |
| spellingShingle | cowpeas vigna unguiculata germplasm genetic diversity population structure genetic markers togo Gbedevi, K.M. Boukar, O. Ishikawa, H. Abe, A. Ongom, P.O. Unachukwu, N. Rabbi, I.Y. Fatokun, C. Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title | Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title_full | Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title_fullStr | Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title_full_unstemmed | Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title_short | Genetic diversity and population structure of cowpea [Vigna unguiculata (L.)Walp.] germplasm collected from Togo based on DArT markers |
| title_sort | genetic diversity and population structure of cowpea vigna unguiculata l walp germplasm collected from togo based on dart markers |
| topic | cowpeas vigna unguiculata germplasm genetic diversity population structure genetic markers togo |
| url | https://hdl.handle.net/10568/115740 |
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