A joint learning approach for genomic prediction in polyploid grasses

Alexandre Hild Aono, Rebecca Caroline Ulbricht Ferreira, Aline da Costa Lima Moraes, Letícia Aparecida de Castro Lara, Ricardo José Gonzaga Pimenta, Estela Araujo Costa, Luciana Rossini Pinto, Marcos Guimarães de Andrade Landell, Mateus Figueiredo Santos, Liana Jank, Sanzio Carvalho Lima Barrios, Cacilda Borges do Valle, Lucimara Chiari, Antonio Augusto Franco Garcia, Reginaldo Massanobu Kuroshu, Ana Carolina Lorena, Gregor Gorjanc, Anete Pereira de Souza

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Poaceae, among the most abundant plant families, includes many economically important polyploid species, such as forage grasses and sugarcane (Saccharum spp.). These species have elevated genomic complexities and limited genetic resources, hindering the application of marker-assisted selection strategies. Currently, the most promising approach for increasing genetic gains in plant breeding is genomic selection. However, due to the polyploidy nature of these polyploid species, more accurate models for incorporating genomic selection into breeding schemes are needed. This study aims to develop a machine learning method by using a joint learning approach to predict complex traits from genotypic data. Biparental populations of sugarcane and two species of forage grasses (Urochloa decumbens, Megathyrsus maximus) were genotyped, and several quantitative traits were measured. High-quality markers were used to predict several traits in different cross-validation scenarios. By combining classification and regression strategies, we developed a predictive system with promising results. Compared with traditional genomic prediction methods, the proposed strategy achieved accuracy improvements exceeding 50%. Our results suggest that the developed methodology could be implemented in breeding programs, helping reduce breeding cycles and increase genetic gains.

Original languageEnglish
Article number12499
Pages (from-to)1-17
JournalScientific Reports
Volume12
Issue number1
DOIs
Publication statusPublished - 21 Jul 2022

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