Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars
A better understanding of the structure and extent of genetic variability in a breeding population of a crop is essential for translating genetic diversity to genetic gain. We assessed the nature and pattern of genetic variability and differentiation in a panel of 100 winged-yam (Dioscorea alata) ac...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/108811 |
| _version_ | 1855542789917376512 |
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| author | Agre, P. Asibe, F. Darkwa, K. Edemodu, A. Bauchet, Guillaume J. Asiedu, R. Adebola, P.O. Asfaw, A. |
| author_browse | Adebola, P.O. Agre, P. Asfaw, A. Asibe, F. Asiedu, R. Bauchet, Guillaume J. Darkwa, K. Edemodu, A. |
| author_facet | Agre, P. Asibe, F. Darkwa, K. Edemodu, A. Bauchet, Guillaume J. Asiedu, R. Adebola, P.O. Asfaw, A. |
| author_sort | Agre, P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A better understanding of the structure and extent of genetic variability in a breeding population of a crop is essential for translating genetic diversity to genetic gain. We assessed the nature and pattern of genetic variability and differentiation in a panel of 100 winged-yam (Dioscorea alata) accessions using 24 phenotypic traits and 6,918 single nucleotide polymorphism (SNP) markers. Multivariate analysis for phenotypic variability indicated that all phenotypic traits assessed were useful in discriminating the yam clones and cultivars. Cluster analysis based on phenotypic data distinguished two significant groups, while a corresponding analysis with SNP markers indicated three genetic groups. However, joint analysis for the phenotypic and genotypic data provided three clusters that could be useful for the identification of heterotic groups in the D. alata breeding program. Our analysis for phenotypic and molecular level diversity provided valuable information about overall diversity and variation in economically important traits useful for establishing crossing panels with contrasting traits of interest. The selection and hybridization of parental lines from the different heterotic groups identified would facilitate maximizing diversity and exploiting population heterosis in the D. alata breeding program. |
| format | Journal Article |
| id | CGSpace108811 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1088112025-11-11T11:07:25Z Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars Agre, P. Asibe, F. Darkwa, K. Edemodu, A. Bauchet, Guillaume J. Asiedu, R. Adebola, P.O. Asfaw, A. yams food production dioscorea dioscorea alata food security plant breeding yields dna west africa genetic structures genetic diversity biodiversity A better understanding of the structure and extent of genetic variability in a breeding population of a crop is essential for translating genetic diversity to genetic gain. We assessed the nature and pattern of genetic variability and differentiation in a panel of 100 winged-yam (Dioscorea alata) accessions using 24 phenotypic traits and 6,918 single nucleotide polymorphism (SNP) markers. Multivariate analysis for phenotypic variability indicated that all phenotypic traits assessed were useful in discriminating the yam clones and cultivars. Cluster analysis based on phenotypic data distinguished two significant groups, while a corresponding analysis with SNP markers indicated three genetic groups. However, joint analysis for the phenotypic and genotypic data provided three clusters that could be useful for the identification of heterotic groups in the D. alata breeding program. Our analysis for phenotypic and molecular level diversity provided valuable information about overall diversity and variation in economically important traits useful for establishing crossing panels with contrasting traits of interest. The selection and hybridization of parental lines from the different heterotic groups identified would facilitate maximizing diversity and exploiting population heterosis in the D. alata breeding program. 2019 2020-07-20T09:36:02Z 2020-07-20T09:36:02Z Journal Article https://hdl.handle.net/10568/108811 en Open Access application/pdf Springer Agre, P., Asibe, F., Darkwa, K., Edemodu, A., Bauchet, G., Asiedu, R., ... & Asfaw, A. (2019). Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars. Scientific Reports, 9(1), 1-11. |
| spellingShingle | yams food production dioscorea dioscorea alata food security plant breeding yields dna west africa genetic structures genetic diversity biodiversity Agre, P. Asibe, F. Darkwa, K. Edemodu, A. Bauchet, Guillaume J. Asiedu, R. Adebola, P.O. Asfaw, A. Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title | Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title_full | Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title_fullStr | Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title_full_unstemmed | Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title_short | Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars |
| title_sort | phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam dioscorea alata clones and cultivars |
| topic | yams food production dioscorea dioscorea alata food security plant breeding yields dna west africa genetic structures genetic diversity biodiversity |
| url | https://hdl.handle.net/10568/108811 |
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