Data/hora: 01/06/2024 22:32:19

Biblioteca(s): 	Embrapa Café.	
Data corrente: 	10/01/2023	
Data da última atualização: 	10/01/2023	
Autoria: 	ANDRADE, L. R. B. de; SOUSA, M. B. e; WOLFE, M.; JANNINK, J. L.; RESENDE, M. D. V. de; AZEVEDO, C. F.; OLIVEIRA, E. J. de.	
Afiliação: 	LUCIANO ROGÉRIO BRAATZ DE ANDRADE, UNIVERSIDADE FEDERAL DE VIÇOSA; MASSAINE BANDEIRA E SOUSA, EMBRAPA MANDIOCA E FRUTICULTURA; MARNIN WOLFE, AUBURN UNIVERSITY; JEAN-LUC JANNINK, CORNELL UNIVERSITY; MARCOS DEON VILELA DE RESENDE, CNPCa; CAMILA FERREIRA AZEVEDO, UNIVERSIDADE FEDERAL DE VIÇOSA; EDER JORGE DE OLIVEIRA, CNPMF.	
Título: 	Increasing cassava root yield: additive-dominant genetic models for selection of parents and clones.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Frontiers in Plant Science, v. 13, article 1071156, 2022.	
DOI: 	https://doi.org/10.3389/fpls.2022.1071156	
Idioma: 	Inglês	
Conteúdo: 	Genomic selection has been promising in situations where phenotypic assessments are expensive, laborious, and/or inefficient. This work evaluated the efficiency of genomic prediction methods combined with genetic models in clone and parent selection with the goal of increasing fresh root yield, dry root yield, as well as dry matter content in cassava roots. The bias and predictive ability of the combinations of prediction methods Genomic Best Linear Unbiased Prediction (G-BLUP), Bayes B, Bayes Cr, and Reproducing Kernel Hilbert Spaces with additive and additive-dominant genetic models were estimated. Fresh and dry root yield exhibited predominantly dominant heritability, while dry matter content exhibited predominantly additive heritability. The combination of prediction methods and genetic models did not show significant differences in the predictive ability for dry matter content. On the other hand, the prediction methods with additive-dominant genetic models had significantly higher predictive ability than the additive genetic models for fresh and dry root yield, allowing higher genetic gains in clone selection. However, higher predictive ability for genotypic values did not result in differences in breeding value predictions between additive and additive-dominant genetic models. G-BLUP with the classical additive-dominant genetic model had the best predictive ability and bias estimates for fresh and dry root yield. For dry matter content, the highest predictive ability was obtained by G-BLUP with the additive genetic model. Dry matter content exhibited the highest heritability, predictive ability, and bias estimates compared with other traits. The prediction methods showed similar selection gains with approximately 67% of the phenotypic selection gain. By shortening the breeding cycle time by 40%, genomic selection may overcome phenotypic selection by 10%, 13%, and 18% for fresh root yield, dry root yield, and dry matter content, respectively, with a selection proportion of 15%. The most suitable genetic model for each trait allows for genomic selection optimization in cassava with high selection gains, thereby accelerating the release of new varieties.	
Thesaurus Nal: 	Breeding value; Cassava; Clones; Genomics; Natural selection; Plant breeding.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150823/1/Increasing-cassava-root-yield.pdf	
Registro original: 	Embrapa Café (CNPCa)	
Exemplares: 	CNPCa - (1665-1) - UPC - AP - DD -  -  -  - DIS