Single- and multiple-trait BLUP in genetic selection of parents and hybrids of grain sorghum.

• Autor(a) principal: SOUZA, N. O. de
• Data de Publicação: 2019
• Outros Autores: ALVES, R. S., TEODORO, P. E., SILVA, L. A. da, TARDIN, F. D., BALDONI, A. B., RESENDE, M. D. V. de, BHERING, L. L.
• Tipo de documento: Artigo
• Idioma: spa
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113515
• topic: Dialelo parcial; Metodologia de modelos mistos; Correlação genética; Heterose; Sorgo; Seleção Genética; Melhoramento Vegetal

To increase yield, breeding programs must search for innovative and efficient methodologies for the development and selection of superior genotypes. Therefore, this study aimed to compare the single- and multiple-trait best linear unbiased prediction (BLUP) in genetic selection of parents and hybrids of grain sorghum. For this, an experiment conducted in alpha-lattice design with two replications was used. Flowering time (FT), plant height (PH), and grain yield (GY) were evaluated in 502 grain sorghum hybrids obtained by the cross of ten restorer lines and 54 male-sterile lines. Variance components were estimated via restricted maximum likelihood (REML). Significant effects of restorer lines, of male-sterile lines, and of specific combining ability were detected by the likelihood ratio test (LRT). The estimates of variance components, genetic parameters, and correlations were similar when obtained via single- and multiple traitBLUP. Considering hybrids, the multiple