Maize pre‑breeding for resistance to corn stunt

Maize pre‑breeding for resistance to corn stunt

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The objective of this work was to select maize families derived from backcrossing between the composite NAP Corn Stunt (donor parent) and inbreed lines (recurrent parents), as to grain yield and resistance to corn stunt, and to evaluate the efficiency of the use of molecular markers in the phenotypic evaluation for the selection of genotypes with high grain yield. One hundred genotypes were evaluated in five environmental conditions in the 2009/2010 crop season. We selected RC1F2 families, which combine high grain yield present in the recurrent parents to resistance to corn stunt present in the donor parent. The selected maize families for agronomic performance and resistance to corn stunt were: L228‑3‑324‑S, L228‑3‑237‑R, L228‑3‑109‑R, which were indicated for crosses with lines of the flint heterotic group; and L3‑422‑R and L3‑586‑R, which were indicated for crosses with lines of the dent heterotic group. For selecting genotypes with high grain yield, the molecular marker‑assisted selection is not efficient for the recovery of the recurrent parent genotype, when compared to the phenotypic evaluation.

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Main Authors: Teixeira, Flavia França, Costa, Flaviane Malaquias, Sábato, Elizabeth de Oliveira, Leite, Carlos Eduardo Prado, Meirelles, Walter Fernandes, Guimarães, Claudia Teixeira, Belicuas, Silvia Neto Jardim
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2013
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/12959
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spelling rev-pab-br-article-129592013-03-19T17:46:31Z Maize pre‑breeding for resistance to corn stunt Pré‑melhoramento de milho quanto à resistência a enfezamentos Teixeira, Flavia França Costa, Flaviane Malaquias Sábato, Elizabeth de Oliveira Leite, Carlos Eduardo Prado Meirelles, Walter Fernandes Guimarães, Claudia Teixeira Belicuas, Silvia Neto Jardim Zea mays; molecular markers; molicutes; genetic resources; marker‑assisted selection; phenotypic selection. Zea mays; marcadores moleculares; molicutes; recursos genéticos; seleção assistida; seleção fenotípica. The objective of this work was to select maize families derived from backcrossing between the composite NAP Corn Stunt (donor parent) and inbreed lines (recurrent parents), as to grain yield and resistance to corn stunt, and to evaluate the efficiency of the use of molecular markers in the phenotypic evaluation for the selection of genotypes with high grain yield. One hundred genotypes were evaluated in five environmental conditions in the 2009/2010 crop season. We selected RC1F2 families, which combine high grain yield present in the recurrent parents to resistance to corn stunt present in the donor parent. The selected maize families for agronomic performance and resistance to corn stunt were: L228‑3‑324‑S, L228‑3‑237‑R, L228‑3‑109‑R, which were indicated for crosses with lines of the flint heterotic group; and L3‑422‑R and L3‑586‑R, which were indicated for crosses with lines of the dent heterotic group. For selecting genotypes with high grain yield, the molecular marker‑assisted selection is not efficient for the recovery of the recurrent parent genotype, when compared to the phenotypic evaluation. O objetivo deste trabalho foi selecionar famílias de milho derivadas do retrocruzamento entre o composto "NAP Corn Stunt" (genitor doador) e linhagens‑elite (genitores recorrentes), quanto à produtividade de grãos e à resistência a enfezamentos, e avaliar a eficiência do emprego de marcadores moleculares para avaliação fenotípica na seleção de genótipos com alta produtividade de grãos. Foram avaliados 100 genótipos, em cinco condições ambientais, na safra agrícola 2009/2010. Foram selecionadas famílias RC1F2, que aliam a alta produtividade dos genitores recorrentes à resistência aos enfezamentos, presente no genitor doador. As famílias selecionadas quanto ao desempenho agronômico e à resistência aos enfezamentos foram: L228‑3‑324‑S, L228‑3‑237‑R, L228‑3‑109‑R, que foram indicadas para cruzamentos com linhagens do grupo heterótico duro; e L3‑422‑R e L3‑586‑R, que foram indicadas para cruzamentos com linhagens do grupo heterótico dentado. Na seleção de genótipos de alta produtividade de grãos, a seleção assistida por marcadores moleculares não é eficiente para a recuperação do genótipo do pai recorrente, em comparação à avaliação fenotípica. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira FAPEMIG - Fundação de Apoio à Pesquisa de Minas Gerais e Global Crop Diversity Trust. 2013-03-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/12959 Pesquisa Agropecuaria Brasileira; v.48, n.1, jan. 2013; 51-58 Pesquisa Agropecuária Brasileira; v.48, n.1, jan. 2013; 51-58 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/12959/8968 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12959/8672
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Teixeira, Flavia França
Costa, Flaviane Malaquias
Sábato, Elizabeth de Oliveira
Leite, Carlos Eduardo Prado
Meirelles, Walter Fernandes
Guimarães, Claudia Teixeira
Belicuas, Silvia Neto Jardim
spellingShingle Teixeira, Flavia França
Costa, Flaviane Malaquias
Sábato, Elizabeth de Oliveira
Leite, Carlos Eduardo Prado
Meirelles, Walter Fernandes
Guimarães, Claudia Teixeira
Belicuas, Silvia Neto Jardim
Maize pre‑breeding for resistance to corn stunt
author_facet Teixeira, Flavia França
Costa, Flaviane Malaquias
Sábato, Elizabeth de Oliveira
Leite, Carlos Eduardo Prado
Meirelles, Walter Fernandes
Guimarães, Claudia Teixeira
Belicuas, Silvia Neto Jardim
author_sort Teixeira, Flavia França
title Maize pre‑breeding for resistance to corn stunt
title_short Maize pre‑breeding for resistance to corn stunt
title_full Maize pre‑breeding for resistance to corn stunt
title_fullStr Maize pre‑breeding for resistance to corn stunt
title_full_unstemmed Maize pre‑breeding for resistance to corn stunt
title_sort maize pre‑breeding for resistance to corn stunt
description The objective of this work was to select maize families derived from backcrossing between the composite NAP Corn Stunt (donor parent) and inbreed lines (recurrent parents), as to grain yield and resistance to corn stunt, and to evaluate the efficiency of the use of molecular markers in the phenotypic evaluation for the selection of genotypes with high grain yield. One hundred genotypes were evaluated in five environmental conditions in the 2009/2010 crop season. We selected RC1F2 families, which combine high grain yield present in the recurrent parents to resistance to corn stunt present in the donor parent. The selected maize families for agronomic performance and resistance to corn stunt were: L228‑3‑324‑S, L228‑3‑237‑R, L228‑3‑109‑R, which were indicated for crosses with lines of the flint heterotic group; and L3‑422‑R and L3‑586‑R, which were indicated for crosses with lines of the dent heterotic group. For selecting genotypes with high grain yield, the molecular marker‑assisted selection is not efficient for the recovery of the recurrent parent genotype, when compared to the phenotypic evaluation.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2013
url https://seer.sct.embrapa.br/index.php/pab/article/view/12959
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