Data/hora: 04/06/2024 11:23:52

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	30/05/2019	
Data da última atualização: 	24/01/2020	
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.	
Título: 	Genetic effects on the efficiency and responsiveness to phosphorus use in popcorn as estimated by diallel analysis.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Plos ONE, v. 14, n. 5, e0216980, May 2019.	
DOI: 	10.1371/journal.pone.0216980	
Idioma: 	Inglês	
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.	
Palavras-Chave: 	Análise dialélica.	
Thesagro: 	Agricultura Sustentável; Fósforo; Melhoramento Genético Vegetal; Milho Pipoca.	
Categoria do assunto: 	G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197941/1/Genetic-effects.pdf	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (28831-1) - UPC - AP - DD -  -  -  - DIS