Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method

The modified recurrent selection method suggests a less productive population to test the other population more productive and itself aiming to have more genetic gains than tradition recurrent selection method that uses one population to test the other one. The objectives of this work were to estima...

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Autores principales:	Afonso Doná,Anderson, Vieira Miranda,Glauco, Oliveira DeLima,Rodrigo, Gonçalves Chaves,Luciana, Gomes e Gama,Elto Eugênio
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2012
Materias:	breeding methods genetic variability
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100006
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spelling	oai:scielo:S0718-583920120001000062018-10-01Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection MethodAfonso Doná,AndersonVieira Miranda,GlaucoOliveira DeLima,RodrigoGonçalves Chaves,LucianaGomes e Gama,Elto Eugênio breeding methods genetic variability The modified recurrent selection method suggests a less productive population to test the other population more productive and itself aiming to have more genetic gains than tradition recurrent selection method that uses one population to test the other one. The objectives of this work were to estimate the genetic components, to predict and to evaluate the genetic gains of the SynFlint and Syndent populations of maize (Zea mays L.), applying a modified recurrent selection method. Two recombination cycles were carried out, with 144 Si progeny per cycle. These progenies were test crossed with SynFlint, generating a SynFlint x Syndent inter-population and a SynFlint x SynFlint intra-population. The progenies were evaluated in five environments in the first cycle of selection and in three in the second cycle of selection, in a 12 x 12 lattice. Genetic variability in plant height and ear height, ear weight and prolificacy was observed in the first cycle of selection and in plant height and ear height in the second cycle. The intensity of selection practiced in the first cycle exhausted the genetic variability in ear weight and prolificacy. It can conclude that the two maize populations evaluated do not show adequate levels of genetic variability and predicted genetics gains estimates to allow their use in breeding programs to obtain lines and superior hybrids; and the modified recurrent selection method is inefficient to increase in population performance per se for the two populations.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.72 n.1 20122012-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100006en10.4067/S0718-58392012000100006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	breeding methods genetic variability
spellingShingle	breeding methods genetic variability Afonso Doná,Anderson Vieira Miranda,Glauco Oliveira DeLima,Rodrigo Gonçalves Chaves,Luciana Gomes e Gama,Elto Eugênio Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
description	The modified recurrent selection method suggests a less productive population to test the other population more productive and itself aiming to have more genetic gains than tradition recurrent selection method that uses one population to test the other one. The objectives of this work were to estimate the genetic components, to predict and to evaluate the genetic gains of the SynFlint and Syndent populations of maize (Zea mays L.), applying a modified recurrent selection method. Two recombination cycles were carried out, with 144 Si progeny per cycle. These progenies were test crossed with SynFlint, generating a SynFlint x Syndent inter-population and a SynFlint x SynFlint intra-population. The progenies were evaluated in five environments in the first cycle of selection and in three in the second cycle of selection, in a 12 x 12 lattice. Genetic variability in plant height and ear height, ear weight and prolificacy was observed in the first cycle of selection and in plant height and ear height in the second cycle. The intensity of selection practiced in the first cycle exhausted the genetic variability in ear weight and prolificacy. It can conclude that the two maize populations evaluated do not show adequate levels of genetic variability and predicted genetics gains estimates to allow their use in breeding programs to obtain lines and superior hybrids; and the modified recurrent selection method is inefficient to increase in population performance per se for the two populations.
author	Afonso Doná,Anderson Vieira Miranda,Glauco Oliveira DeLima,Rodrigo Gonçalves Chaves,Luciana Gomes e Gama,Elto Eugênio
author_facet	Afonso Doná,Anderson Vieira Miranda,Glauco Oliveira DeLima,Rodrigo Gonçalves Chaves,Luciana Gomes e Gama,Elto Eugênio
author_sort	Afonso Doná,Anderson
title	Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
title_short	Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
title_full	Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
title_fullStr	Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
title_full_unstemmed	Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method
title_sort	genetic parameters and predictive genetic gain in maize with modified recurrent selection method
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100006
work_keys_str_mv	AT afonsodonaanderson geneticparametersandpredictivegeneticgaininmaizewithmodifiedrecurrentselectionmethod AT vieiramirandaglauco geneticparametersandpredictivegeneticgaininmaizewithmodifiedrecurrentselectionmethod AT oliveiradelimarodrigo geneticparametersandpredictivegeneticgaininmaizewithmodifiedrecurrentselectionmethod AT goncalveschavesluciana geneticparametersandpredictivegeneticgaininmaizewithmodifiedrecurrentselectionmethod AT gomesegamaeltoeugenio geneticparametersandpredictivegeneticgaininmaizewithmodifiedrecurrentselectionmethod
_version_	1714205305383944192

Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method

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