Population diversity and genetics of Urochloa interspecific breeding populations
Here, we present a population genetics and structure analysis of the CIAT Urochloa interspecific breeding population based on over one million high-quality biallelic SNP markers mapped to the U. decumbens tetraploid reference genome. We characterize patterns of genetic diversity, inbreeding coeffici...
| Main Authors: | , |
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| Format: | Informe técnico |
| Language: | Inglés |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/180649 |
| _version_ | 1855527419893514240 |
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| author | Perea, Claudia Jauregui, Rosa |
| author_browse | Jauregui, Rosa Perea, Claudia |
| author_facet | Perea, Claudia Jauregui, Rosa |
| author_sort | Perea, Claudia |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Here, we present a population genetics and structure analysis of the CIAT Urochloa interspecific breeding population based on over one million high-quality biallelic SNP markers mapped to the U. decumbens tetraploid reference genome. We characterize patterns of genetic diversity, inbreeding coefficients, allelic richness, and population structure across founders, sequential breeding cycles, and sexual recombination populations. Our analysis addresses key questions about breeding program effectiveness: How much of the founder genetic diversity has been retained? Are sexual populations successfully generating genetic variation? What is the population structure across species boundaries in this interspecific system? The insights generated inform broader strategies for maintaining genetic diversity in complex polyploid breeding systems. |
| format | Informe técnico |
| id | CGSpace180649 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| record_format | dspace |
| spelling | CGSpace1806492026-01-26T17:07:17Z Population diversity and genetics of Urochloa interspecific breeding populations Perea, Claudia Jauregui, Rosa genetic diversity (resource) diversidad genética (recurso) genotyping característica agronómica hybrids polyploidy híbrido programa de crianza marcador genético breeding programmes population genetics genética de poblaciones genotipado genetic markers apomixis agronomic characters Here, we present a population genetics and structure analysis of the CIAT Urochloa interspecific breeding population based on over one million high-quality biallelic SNP markers mapped to the U. decumbens tetraploid reference genome. We characterize patterns of genetic diversity, inbreeding coefficients, allelic richness, and population structure across founders, sequential breeding cycles, and sexual recombination populations. Our analysis addresses key questions about breeding program effectiveness: How much of the founder genetic diversity has been retained? Are sexual populations successfully generating genetic variation? What is the population structure across species boundaries in this interspecific system? The insights generated inform broader strategies for maintaining genetic diversity in complex polyploid breeding systems. 2025-12 2026-01-26T15:46:37Z 2026-01-26T15:46:37Z Report https://hdl.handle.net/10568/180649 en Open Access application/pdf Perea, C.; Jauregui, R. (2025) Population diversity and genetics of Urochloa interspecific breeding populations. CGIAR Breeding for Tomorrow Science Program. 8 p. |
| spellingShingle | genetic diversity (resource) diversidad genética (recurso) genotyping característica agronómica hybrids polyploidy híbrido programa de crianza marcador genético breeding programmes population genetics genética de poblaciones genotipado genetic markers apomixis agronomic characters Perea, Claudia Jauregui, Rosa Population diversity and genetics of Urochloa interspecific breeding populations |
| title | Population diversity and genetics of Urochloa interspecific breeding populations |
| title_full | Population diversity and genetics of Urochloa interspecific breeding populations |
| title_fullStr | Population diversity and genetics of Urochloa interspecific breeding populations |
| title_full_unstemmed | Population diversity and genetics of Urochloa interspecific breeding populations |
| title_short | Population diversity and genetics of Urochloa interspecific breeding populations |
| title_sort | population diversity and genetics of urochloa interspecific breeding populations |
| topic | genetic diversity (resource) diversidad genética (recurso) genotyping característica agronómica hybrids polyploidy híbrido programa de crianza marcador genético breeding programmes population genetics genética de poblaciones genotipado genetic markers apomixis agronomic characters |
| url | https://hdl.handle.net/10568/180649 |
| work_keys_str_mv | AT pereaclaudia populationdiversityandgeneticsofurochloainterspecificbreedingpopulations AT jaureguirosa populationdiversityandgeneticsofurochloainterspecificbreedingpopulations |