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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...

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Autores principales: Agre, Paterne, Asibe, Flora, Darkwa, Kwabena, Edemodu, Alex, Bauchet, Guillaume, Asiedu, Robert, Adebola, Patrick, Asfaw, Asrat
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6890776/
https://www.ncbi.nlm.nih.gov/pubmed/31796820
http://dx.doi.org/10.1038/s41598-019-54761-3
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author Agre, Paterne
Asibe, Flora
Darkwa, Kwabena
Edemodu, Alex
Bauchet, Guillaume
Asiedu, Robert
Adebola, Patrick
Asfaw, Asrat
author_facet Agre, Paterne
Asibe, Flora
Darkwa, Kwabena
Edemodu, Alex
Bauchet, Guillaume
Asiedu, Robert
Adebola, Patrick
Asfaw, Asrat
author_sort Agre, Paterne
collection PubMed
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.
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spelling pubmed-68907762019-12-10 Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars Agre, Paterne Asibe, Flora Darkwa, Kwabena Edemodu, Alex Bauchet, Guillaume Asiedu, Robert Adebola, Patrick Asfaw, Asrat Sci Rep Article 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. Nature Publishing Group UK 2019-12-03 /pmc/articles/PMC6890776/ /pubmed/31796820 http://dx.doi.org/10.1038/s41598-019-54761-3 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Agre, Paterne
Asibe, Flora
Darkwa, Kwabena
Edemodu, Alex
Bauchet, Guillaume
Asiedu, Robert
Adebola, Patrick
Asfaw, Asrat
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6890776/
https://www.ncbi.nlm.nih.gov/pubmed/31796820
http://dx.doi.org/10.1038/s41598-019-54761-3
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