Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils

Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils

Several trials were conducted in 1982/83, in order to estimate the effects of general and specific combining ability and the hererosis effects on the yield of five maize (Zea mays L.) populations being selected in conditions of acid soils. The evaluations were done at four locations, Jataí and Goiânia, Goiás State, Jaciara, Mato Grosso State and Sete Lagoas Minas Gerais State, Brazil. The 16 treatments were evaluated in a randomized complete block design with five replications. The comercial double-cross hybrid Cargill 111 was used as check and the treatments were the five populations per se(CMS-04, CMS-13, CMS-14, CMS-30 and CMS-36) and the ten varietal crosses between them. The higher effects of general combining ability were attained with CMS-36 and CMS-30 (361.47 and 66.53), respectively. The best combinations measured through the specific combining ability effects were attained with the crosses between CMS-04 x CMS-30; CMS-04 x CMS-13 and CMS-04 x CMS-36. The heterosis values in relation to the average of the best parent were 5.3%, 3.5% and 8.6% for the three crosses mentioned. The higher heterosis effect (15.7%) was attained with the cross between CMS-13 x CMS-36. 

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Main Authors: Eleutério, Álvaro, Gama, Elto Eugênio Gomes e, Morais, Augusto Ramalho de
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2014
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/13825
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spelling rev-pab-br-article-138252014-09-08T17:41:51Z Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils Capacidade de combinação e heterose em híbridos intervarietais de milho adaptados às condições de cerrado Eleutério, Álvaro Gama, Elto Eugênio Gomes e Morais, Augusto Ramalho de Zea mays; acid soil; combining ability Zea mays; solo ácido; capacidade de combinação Several trials were conducted in 1982/83, in order to estimate the effects of general and specific combining ability and the hererosis effects on the yield of five maize (Zea mays L.) populations being selected in conditions of acid soils. The evaluations were done at four locations, Jataí and Goiânia, Goiás State, Jaciara, Mato Grosso State and Sete Lagoas Minas Gerais State, Brazil. The 16 treatments were evaluated in a randomized complete block design with five replications. The comercial double-cross hybrid Cargill 111 was used as check and the treatments were the five populations per se(CMS-04, CMS-13, CMS-14, CMS-30 and CMS-36) and the ten varietal crosses between them. The higher effects of general combining ability were attained with CMS-36 and CMS-30 (361.47 and 66.53), respectively. The best combinations measured through the specific combining ability effects were attained with the crosses between CMS-04 x CMS-30; CMS-04 x CMS-13 and CMS-04 x CMS-36. The heterosis values in relation to the average of the best parent were 5.3%, 3.5% and 8.6% for the three crosses mentioned. The higher heterosis effect (15.7%) was attained with the cross between CMS-13 x CMS-36.  Quatro experimentos foram conduzidos em 1982/83, com o objetivo de estimar os efeitos das capacidades geral (CGC) e especifica (CEC) de combinação, além dos valores da heterose na produção de espigas de cruzamentos dialélicos entre cinco populações de milho (Zea mays L.) que estão sendo submetidas a um processo de seleção para as condições de solo sob vegetação de cerrado. A avaliação foi feita nos locais de Jataí (GO), Goiânia (GO), Jaciara (MT) e Sete Lagoas (MG). Utilizou-se um delineamento em blocos casualizados, com 16 tratamentos e cinco repetições, tendo como testemunha o híbrido duplo comercial Cargill 111. Os tratamentos compreenderam as populações CMS-04, CMS-13, CMS-14, CMS-30 e CMS-36, além dos dez híbridos intervarietais entre elas. Com relação à capacidade geral de combinação, as populações CMS-36 e CMS-30 apresentaram os maiores valores para CGC (361,47 e 66,53). As melhores combinações expressas em relação à CEC foram entre os cruzamentos CMS-04 x CMS-30, CMS-04 x CMS-13 e CMS-04 x CMS-36, evidenciando que, para este grupo de cruzamentos, epistasia e dominância prevalecem sobre os efeitos gênicos aditivos. Os valores percentuais de heterose em relação à média do pai mais produtivo foram de 5,3%; 3,5% e 8,6% para os cruzamentos citados. A maior heterose (15,7%) foi obtida do cruzamento entre CMS-13 x CMS-36.  Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2014-04-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/13825 Pesquisa Agropecuaria Brasileira; v.23, n.3, mar. 1988; 247-253 Pesquisa Agropecuária Brasileira; v.23, n.3, mar. 1988; 247-253 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/13825/7847
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 Eleutério, Álvaro
Gama, Elto Eugênio Gomes e
Morais, Augusto Ramalho de
spellingShingle Eleutério, Álvaro
Gama, Elto Eugênio Gomes e
Morais, Augusto Ramalho de
Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
author_facet Eleutério, Álvaro
Gama, Elto Eugênio Gomes e
Morais, Augusto Ramalho de
author_sort Eleutério, Álvaro
title Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
title_short Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
title_full Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
title_fullStr Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
title_full_unstemmed Combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
title_sort combining ability and heterosis in maize intervarietal hybrids adapted to acid soils
description Several trials were conducted in 1982/83, in order to estimate the effects of general and specific combining ability and the hererosis effects on the yield of five maize (Zea mays L.) populations being selected in conditions of acid soils. The evaluations were done at four locations, Jataí and Goiânia, Goiás State, Jaciara, Mato Grosso State and Sete Lagoas Minas Gerais State, Brazil. The 16 treatments were evaluated in a randomized complete block design with five replications. The comercial double-cross hybrid Cargill 111 was used as check and the treatments were the five populations per se(CMS-04, CMS-13, CMS-14, CMS-30 and CMS-36) and the ten varietal crosses between them. The higher effects of general combining ability were attained with CMS-36 and CMS-30 (361.47 and 66.53), respectively. The best combinations measured through the specific combining ability effects were attained with the crosses between CMS-04 x CMS-30; CMS-04 x CMS-13 and CMS-04 x CMS-36. The heterosis values in relation to the average of the best parent were 5.3%, 3.5% and 8.6% for the three crosses mentioned. The higher heterosis effect (15.7%) was attained with the cross between CMS-13 x CMS-36. 
publisher Pesquisa Agropecuaria Brasileira
publishDate 2014
url https://seer.sct.embrapa.br/index.php/pab/article/view/13825
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