Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1109459
Título: Genetic effects on the efficiency and responsiveness to phosphorus use in popcorn as estimated by diallel analysis.
Autoria: GERHARDT, I. F. S.
AMARAL JÚNIOR, A. T. do
PENA, G. F.
GUIMARAES, L. J. M.
LIMA, V. J. de
VIVAS, M.
SANTOS, P. H. A. D.
FERREIRA, F. R. A.
FREITAS, M. S. M.
KAMPHORST, S. H.
Afiliação: Ismael Fernando Schegoscheski Gerhardt, University of Guelph; Antonio Teixeira do Amaral Junior, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Guilherme Ferreira Pena, Universidade Estadual de Mato Grosso; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Valter Jario de Lima, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Marcelo Vivas, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Pedro Henrique Araújo Diniz Santos, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Fernando Rafael Alves Ferreira, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Marta Simone Mendonça Freitas, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Samuel Henrique Kamphorst, Universidade Estadual do Norte Fluminense Darcy Ribeiro.
Ano de publicação: 2019
Referência: Plos ONE, v. 14, n. 5, e0216980, May 2019.
Conteúdo: Agricultural expansion and the need for sustainable cultivation are challenges faced by researchers involved in the generation of new cultivars that can adapt to abiotic stress. Knowledge of the genetic effects of characteristics related to efficiency and responsiveness to phosphorus use must be considered when implementing methods to obtain better genotypes. The aim of this study was to characterize and select popcorn hybrids based on their efficiency and responsiveness to phosphorus use, and estimate their combining abilities and genetic effects via diallel analysis to implement improvement programs for sustainable agriculture. Eight contrasting inbred lines were used to obtain simple hybrids for diallel analysis. Twenty-eight diallelic hybrids plus the popcorn parental lines were evaluated at two different sites under two contrasting environments for soil phosphorus availability (6×6 lattice design). Grain yield, popping expansion, and volume of expanded popcorn per hectare were measured. A combined analysis of variance and a test of means were performed. The classification and utilization of the phosphorus use efficiency index, according to the grain yield performance of the hybrids under contrasting environments, was considered. Through model 2 of the Griffing?s diallel analysis method, the general and specific combining abilities were estimated, along with their environmental interactions. The best strategy to obtain genotypes that are efficient and responsive to phosphorus involves exploring popcorn hybrids using genitors that result in the accumulation of additive genes that promote popping expansion. Hybrids P7×L80, P7×L59, P7×L76, and P6×L80 presented promising results and may be evaluated as cultivation options in phosphorus-deficient soils.
Thesagro: Milho Pipoca
Fósforo
Agricultura Sustentável
Melhoramento Genético Vegetal
Palavras-chave: Análise dialélica
Digital Object Identifier: 10.1371/journal.pone.0216980
Tipo do material: Artigo de periódico
Acesso: openAccess
Aparece nas coleções:Artigo em periódico indexado (CNPMS)

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