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https://hdl.handle.net/1959.11/15941
Title: | Genomic prediction in CIMMYT maize and wheat breeding programs | Contributor(s): | Crossa, J (author); Perez, P (author); Bonnett, D (author); Matthews, K (author); Hickey, John (author); Burgueno, J (author); Ornella, L (author); Ceron-Rojas, J (author); Zhang, X (author); Dreisigacker, S (author); Babu, R (author); Li, Y (author) | Publication Date: | 2014 | Open Access: | Yes | DOI: | 10.1038/hdy.2013.16 | Handle Link: | https://hdl.handle.net/1959.11/15941 | Abstract: | Genomic selection (GS) has been implemented in animal and plant species, and is regarded as a useful tool for accelerating genetic gains. Varying levels of genomic prediction accuracy have been obtained in plants, depending on the prediction problem assessed and on several other factors, such as trait heritability, the relationship between the individuals to be predicted and those used to train the models for prediction, number of markers, sample size and genotype x environment interaction (GE). The main objective of this article is to describe the results of genomic prediction in International Maize and Wheat Improvement Center's (CIMMYT's) maize and wheat breeding programs, from the initial assessment of the predictive ability of different models using pedigree and marker information to the present, when methods for implementing GS in practical global maize and wheat breeding programs are being studied and investigated. Results show that pedigree (population structure) accounts for a sizeable proportion of the prediction accuracy when a global population is the prediction problem to be assessed. However, when the prediction uses unrelated populations to train the prediction equations, prediction accuracy becomes negligible. When genomic prediction includes modeling GE, an increase in prediction accuracy can be achieved by borrowing information from correlated environments. Several questions on how to incorporate GS into CIMMYT's maize and wheat programs remain unanswered and subject to further investigation, for example, prediction within and between related biparental crosses. Further research on the quantification of breeding value components for GS in plant breeding populations is required. | Publication Type: | Journal Article | Source of Publication: | Heredity, 112(1), p. 48-60 | Publisher: | Nature Publishing Group | Place of Publication: | United Kingdom | ISSN: | 1365-2540 0018-067X |
Fields of Research (FoR) 2008: | 060408 Genomics 070305 Crop and Pasture Improvement (Selection and Breeding) |
Fields of Research (FoR) 2020: | 310509 Genomics 300406 Crop and pasture improvement (incl. selection and breeding) |
Socio-Economic Objective (SEO) 2008: | 820507 Wheat 820401 Maize |
Socio-Economic Objective (SEO) 2020: | 260312 Wheat 260306 Maize |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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