Multi-trait selection of female parents in Megathyrsus maximus using desired Gains Index Based on BLUPs

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dc.creatorHernandez, Luis
dc.creatorGonzalez, David
dc.creatorWerner, Christian
dc.creatorJauregui, Rosa
dc.date2025-12
dc.date2026-01-16T08:38:31Z
dc.date2026-01-16T08:38:31Z
dc.date.accessioned2026-06-27T13:31:20Z
dc.descriptionEfficient parent selection in forage breeding requires the simultaneous improvement of productivity, environmental adaptation, and nutritional quality. In this study, a multi-trait Desired Gains Index (DGI) based on Best Linear Unbiased Predictors (BLUPs) was implemented to identify superior female parents in a Megathyrsus breeding population. Biomass performance was evaluated in contrasting environments (acidic and non-acidic soils), together with dry matter and crude protein content. A Target Product Profile (TPP) was defined in absolute trait units, and the vector of desired gains was derived as the deviation from population means. Index weights were calculated using the inverse of the BLUP variance–covariance matrix, and individuals were ranked based on their index values. The resulting index effectively integrated productivity and quality traits, enabling clear discrimination among female parents. This approach provides a transparent and flexible framework for multi-trait parent selection and supports strategic breeding decisions in Megathyrsus breeding programs.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/179962
dc.identifier.urihttp://hdl.handle.net/123456789/62019
dc.languageen
dc.rightsOpen Access
dc.sourceHernandez, L.; Gonzalez, D.; Werner, C.; Jauregui, R. (2025) Multi-trait selection of female parents in Megathyrsus maximus using desired Gains Index Based on BLUPs. 8 p.
dc.subjectdry matter
dc.subjectacid soils
dc.subjectgenetic gain
dc.subjectbreeding programmes
dc.subjectsuelo ácido
dc.subjectbiomass production
dc.subjectproducción de biomasa
dc.subjectselection index
dc.subjectganancia
dc.subjectmateria seca
dc.subjectbest linear unbiased predictor
dc.subjectcrude protein content
dc.subjectÍndice de selección
dc.subjectmejor predictor lineal imparcial
dc.subjectcontenido de proteína cruda
dc.titleMulti-trait selection of female parents in Megathyrsus maximus using desired Gains Index Based on BLUPs
dc.typeReport

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