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Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines
Understanding the genetic relationships between the key founder inbred lines and derived inbred lines could provide insight into the breeding history and the structure of genetic diversity of the available elite inbred lines with desirable target traits. The maize improvement program at the Internat...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359401/ https://www.ncbi.nlm.nih.gov/pubmed/37474651 http://dx.doi.org/10.1038/s41598-023-38980-3 |
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author | Gedil, Melaku Maazou, Abdoul-Raouf Sayadi Zebire, Degife A. Garcia-Oliveira, Ana Luísa Unachukwu, Nnanna Petroli, César Hearne, Sarah Everett, Leslie A. Kim, Soon-Kwon Menkir, Abebe |
author_facet | Gedil, Melaku Maazou, Abdoul-Raouf Sayadi Zebire, Degife A. Garcia-Oliveira, Ana Luísa Unachukwu, Nnanna Petroli, César Hearne, Sarah Everett, Leslie A. Kim, Soon-Kwon Menkir, Abebe |
author_sort | Gedil, Melaku |
collection | PubMed |
description | Understanding the genetic relationships between the key founder inbred lines and derived inbred lines could provide insight into the breeding history and the structure of genetic diversity of the available elite inbred lines with desirable target traits. The maize improvement program at the International Institute of Tropical Agriculture (IITA) analyzed the pedigree information of 623 sub-tropical maize inbred lines generated at the IITA maize breeding program to identify the key founder inbred lines. We also used 5032 SNP markers to assess the genetic similarities of the founder inbred lines with their progenies subsequently developed for specific target traits. The results of pedigree analysis and SNP markers-based similarity scores identified 20 key founder inbred lines with significant contributions to the development of drought tolerant, early maturing, productive, Striga resistant, provitamin A enriched, and quality protein maize inbred lines. In our breeding program, line TZMi501 belonging to a flint heterotic group (HGA), and TZMi407-S and TZMi214, representing the dent heterotic group (HGB), were identified as the most useful founder inbred lines. The 623 inbred lines were consistently separated into four clusters based on Ward’s hierarchical clustering, structure, and principal component analyses, with the 20 founder inbred lines spread into all clusters. The founder inbred lines were more genetically related to the productive inbred lines but showed genetic divergence from the provitamin A enriched inbred lines. These results provide a better understanding of the breeding history of the sub-tropical maize inbred lines to facilitate parental selection aligned to existing heterotic groups for use in breeding programs targeting the improvement of essential traits in maize. |
format | Online Article Text |
id | pubmed-10359401 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-103594012023-07-22 Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines Gedil, Melaku Maazou, Abdoul-Raouf Sayadi Zebire, Degife A. Garcia-Oliveira, Ana Luísa Unachukwu, Nnanna Petroli, César Hearne, Sarah Everett, Leslie A. Kim, Soon-Kwon Menkir, Abebe Sci Rep Article Understanding the genetic relationships between the key founder inbred lines and derived inbred lines could provide insight into the breeding history and the structure of genetic diversity of the available elite inbred lines with desirable target traits. The maize improvement program at the International Institute of Tropical Agriculture (IITA) analyzed the pedigree information of 623 sub-tropical maize inbred lines generated at the IITA maize breeding program to identify the key founder inbred lines. We also used 5032 SNP markers to assess the genetic similarities of the founder inbred lines with their progenies subsequently developed for specific target traits. The results of pedigree analysis and SNP markers-based similarity scores identified 20 key founder inbred lines with significant contributions to the development of drought tolerant, early maturing, productive, Striga resistant, provitamin A enriched, and quality protein maize inbred lines. In our breeding program, line TZMi501 belonging to a flint heterotic group (HGA), and TZMi407-S and TZMi214, representing the dent heterotic group (HGB), were identified as the most useful founder inbred lines. The 623 inbred lines were consistently separated into four clusters based on Ward’s hierarchical clustering, structure, and principal component analyses, with the 20 founder inbred lines spread into all clusters. The founder inbred lines were more genetically related to the productive inbred lines but showed genetic divergence from the provitamin A enriched inbred lines. These results provide a better understanding of the breeding history of the sub-tropical maize inbred lines to facilitate parental selection aligned to existing heterotic groups for use in breeding programs targeting the improvement of essential traits in maize. Nature Publishing Group UK 2023-07-20 /pmc/articles/PMC10359401/ /pubmed/37474651 http://dx.doi.org/10.1038/s41598-023-38980-3 Text en © The Author(s) 2023, corrected publication 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Gedil, Melaku Maazou, Abdoul-Raouf Sayadi Zebire, Degife A. Garcia-Oliveira, Ana Luísa Unachukwu, Nnanna Petroli, César Hearne, Sarah Everett, Leslie A. Kim, Soon-Kwon Menkir, Abebe Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title | Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title_full | Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title_fullStr | Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title_full_unstemmed | Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title_short | Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
title_sort | genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359401/ https://www.ncbi.nlm.nih.gov/pubmed/37474651 http://dx.doi.org/10.1038/s41598-023-38980-3 |
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