| dc.contributor.author | Ferguson, M. |
| dc.contributor.author | Shah, T. |
| dc.contributor.author | Kulakow, P. |
| dc.contributor.author | Ceballos, H. |
| dc.date.accessioned | 2019-12-04T11:39:09Z |
| dc.date.available | 2019-12-04T11:39:09Z |
| dc.date.issued | 2019-11-06 |
| dc.identifier.citation | Ferguson, M., Shah, T., Kulakow, P. & Ceballos, H. (2019). A global overview of cassava genetic diversity. PLOS ONE, 14(11): e0224763, 1-16. |
| dc.identifier.issn | 1932-6203 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/6551 |
| dc.description | Open Access Journal |
| dc.description.abstract | Although numerous studies of diversity have been conducted in cassava, there is no comprehensive assessment of global genetic diversity. Here we draw on previous studies and breeders’ knowledge to select diversity sets from the International Institute of Tropical Agriculture (IITA) and the International Center for Tropical Agriculture (CIAT) genebanks and breeders’ germplasm, as well as elite germplasm and landraces from eastern, southern and central (ESC) Africa to make a global assessment of diversity in cassava, using a SNP based GoldenGate (Illumina Inc.) assay. A synthesis of results from genetic distance and ADMIXTURE analysis essentially revealed four populations (i) South American germplasm characterised by relatively higher genetic diversity with hypothetical ancestral founder genotypes from Brazil, (ii) a smaller group of African introduction germplasm which is more distantly related to all other germplasm, (iii) West Africa germplasm dominated by IITA breeding lines, containing sources of cassava mosaic disease resistance, and IITA genebank accessions from West Africa, both characterised by slightly lower diversity, and (iv) a less cohesive group of African germplasm, termed ‘Other’, with moderate levels of diversity and a majority of germplasm from ESC Africa. This study highlights opportunities for heterosis breeding, purging of duplicates in genebanks and the need for conservation of ESC Africa landraces. |
| dc.description.sponsorship | Generation Challenge Program |
| dc.format.extent | 1-16 |
| dc.language.iso | en |
| dc.rights | CC-BY-4.0 |
| dc.subject | Cassava |
| dc.subject | Genetic Diversity |
| dc.subject | Germplasm Banks |
| dc.subject | Disease Resistance |
| dc.title | A global overview of cassava genetic diversity |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.crp | Maize |
| cg.contributor.crp | Policies, Institutions and Markets |
| cg.contributor.crp | Roots, Tubers and Bananas |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.country | Nigeria |
| cg.creator.identifier | Morag Ferguson: 0000-0002-7763-5173 |
| cg.creator.identifier | Trushar Shah: 0000-0002-0091-7981 |
| cg.creator.identifier | Peter Kulakow: 0000-0002-7574-2645 |
| cg.creator.identifier | Hernan Ceballos: 0000-0002-8744-7918 |
| cg.researchtheme | BIOMETRICS |
| cg.researchtheme | BIOTECH & PLANT BREEDING |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR single centre |
| cg.iitasubject | Biometrics |
| cg.iitasubject | Cassava |
| cg.iitasubject | Genetic Improvement |
| cg.iitasubject | Plant Breeding |
| cg.iitasubject | Plant Genetic Resources |
| cg.journal | PLOS ONE |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Open Access |
| local.dspaceid | 110089 |
| cg.targetaudience | Scientists |
| cg.identifier.doi | https://dx.doi.org/10.1371/journal.pone.0224763 |
