Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics

Detalhes bibliográficos
Autor(a) principal: Camargo, Carlos Eduardo de Oliveira
Data de Publicação: 2000
Outros Autores: Filho, Antonio Wilson Penteado Ferreira, Felicio, João Carlos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/5770
Resumo: The objective of the present work was to estimate the variance, heterosis and heterobeltiosis, and the narrow-sense heritability values for grain yield , spike length, rachis internode length and height of wheat plants (Triticum aestivum L.), as well as the environmental, phenotypic and genetic correlations between these characteristics. Degrees of dominance were also estimated for all characteristics except for grain yield. The experiment was carried out at the Experimental Center, in Campinas, São Paulo State, Brazil, under a screen house condition on crosses of the standard height cultivar IAC-227 (P1) with four mexican lines: CMH 78.390/ CMH 77 A.917// CMH 79.215 (P2), CMH 79.959/2* CNO 79 (P3), CMH 79.481/CMH 77A.917 (P4) and CMH 80A. 747 (P5). The narrow sense heritability values for plant height (0.608-0.861), spike length (0.406-0.667), rachis internode length (0.545-0.781) and grain yield (0.421-0.550) indicated that the great part of the verified genetic variability in the hybrid populations for these traits were due to additive gene action. The phenotypic correlations between plant height with grain yield and between spike length and rachis internode length were positive and significant to all crosses, showing to have associations between these characters; however the obtained results suggest that large F2 populations will be required to ensure the frequency of desired recombinants, showing semidwarf plants with high yield potential.
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spelling Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristicsEstimativas de herdabilidade e correlações quanto à produção de grãos e outras características agronômicas em populações de trigoTriticum aestivum; spike length; rachis internode heterosis; heterobeltiose; degree of dominanceTriticum aestivum; comprimento da espiga; internódio da raque; heterose heterobeltiose; graus de dominânciaThe objective of the present work was to estimate the variance, heterosis and heterobeltiosis, and the narrow-sense heritability values for grain yield , spike length, rachis internode length and height of wheat plants (Triticum aestivum L.), as well as the environmental, phenotypic and genetic correlations between these characteristics. Degrees of dominance were also estimated for all characteristics except for grain yield. The experiment was carried out at the Experimental Center, in Campinas, São Paulo State, Brazil, under a screen house condition on crosses of the standard height cultivar IAC-227 (P1) with four mexican lines: CMH 78.390/ CMH 77 A.917// CMH 79.215 (P2), CMH 79.959/2* CNO 79 (P3), CMH 79.481/CMH 77A.917 (P4) and CMH 80A. 747 (P5). The narrow sense heritability values for plant height (0.608-0.861), spike length (0.406-0.667), rachis internode length (0.545-0.781) and grain yield (0.421-0.550) indicated that the great part of the verified genetic variability in the hybrid populations for these traits were due to additive gene action. The phenotypic correlations between plant height with grain yield and between spike length and rachis internode length were positive and significant to all crosses, showing to have associations between these characters; however the obtained results suggest that large F2 populations will be required to ensure the frequency of desired recombinants, showing semidwarf plants with high yield potential.Objetivou-se estimar os valores da variância, da heterose e heterobeltiose, e da herdabilidade em sentido restrito quanto a altura da planta de trigo (Triticum aestivum L.), comprimento da espiga, comprimento do internódio da raque e produção de grãos, e quanto às correlações de ambiente, fenotípicas e genéticas, entre essas características. Foram também estimados os graus de dominância em relação a todas as características, com exceção da produção de grãos. O experimento foi instalado em telado, no Núcleo Experimental de Campinas, empregando cruzamentos entre a cultivar IAC-227 (P1), de porte alto, e quatro linhagens mexicanas, de porte baixo: CMH 78.390/ CMH 77A. 917// CMH 79.215 (P2), CMH 79.959/2* CNO 79 (P3), CMH 79.481/ CMH 77A. 917 (P4) e CMH 80A. 747 (P5). Os valores da herdabilidade em sentido restrito, referente a altura da planta (0,608-0,861), comprimento da espiga (0,406-0,667), comprimento do internódio da raque (0,545-0,781) e produção de grãos (0,421-0,550) indicaram que grande parte da variabilidade genética verificada nas populações híbridas quanto a essas características foi causada por genes com ação aditiva. As correlações fenotípicas entre altura da planta e produção de grãos e entre comprimento da espiga e comprimento do internódio da raque foram positivas e significativas em todos os cruzamentos considerados, o que mostra haver associação entre esses caracteres; portanto, os resultados obtidos sugerem que o estudo de grandes populações F2 seria de interesse para assegurar maior freqüência de recombinantes desejáveis, originando plantas semi-anãs com elevado potencial produtivo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCamargo, Carlos Eduardo de OliveiraFilho, Antonio Wilson Penteado FerreiraFelicio, João Carlos2000-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5770Pesquisa Agropecuaria Brasileira; v.35, n.2, fev. 2000; 369-379Pesquisa Agropecuária Brasileira; v.35, n.2, fev. 2000; 369-3791678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5770/2874info:eu-repo/semantics/openAccess2014-08-15T17:35:05Zoai:ojs.seer.sct.embrapa.br:article/5770Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-15T17:35:05Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
Estimativas de herdabilidade e correlações quanto à produção de grãos e outras características agronômicas em populações de trigo
title Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
spellingShingle Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
Camargo, Carlos Eduardo de Oliveira
Triticum aestivum; spike length; rachis internode heterosis; heterobeltiose; degree of dominance
Triticum aestivum; comprimento da espiga; internódio da raque; heterose heterobeltiose; graus de dominância
title_short Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
title_full Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
title_fullStr Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
title_full_unstemmed Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
title_sort Variance, heritability and correlations in wheat hybrid populations for grain yield and other agronomic characteristics
author Camargo, Carlos Eduardo de Oliveira
author_facet Camargo, Carlos Eduardo de Oliveira
Filho, Antonio Wilson Penteado Ferreira
Felicio, João Carlos
author_role author
author2 Filho, Antonio Wilson Penteado Ferreira
Felicio, João Carlos
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Camargo, Carlos Eduardo de Oliveira
Filho, Antonio Wilson Penteado Ferreira
Felicio, João Carlos
dc.subject.por.fl_str_mv Triticum aestivum; spike length; rachis internode heterosis; heterobeltiose; degree of dominance
Triticum aestivum; comprimento da espiga; internódio da raque; heterose heterobeltiose; graus de dominância
topic Triticum aestivum; spike length; rachis internode heterosis; heterobeltiose; degree of dominance
Triticum aestivum; comprimento da espiga; internódio da raque; heterose heterobeltiose; graus de dominância
description The objective of the present work was to estimate the variance, heterosis and heterobeltiosis, and the narrow-sense heritability values for grain yield , spike length, rachis internode length and height of wheat plants (Triticum aestivum L.), as well as the environmental, phenotypic and genetic correlations between these characteristics. Degrees of dominance were also estimated for all characteristics except for grain yield. The experiment was carried out at the Experimental Center, in Campinas, São Paulo State, Brazil, under a screen house condition on crosses of the standard height cultivar IAC-227 (P1) with four mexican lines: CMH 78.390/ CMH 77 A.917// CMH 79.215 (P2), CMH 79.959/2* CNO 79 (P3), CMH 79.481/CMH 77A.917 (P4) and CMH 80A. 747 (P5). The narrow sense heritability values for plant height (0.608-0.861), spike length (0.406-0.667), rachis internode length (0.545-0.781) and grain yield (0.421-0.550) indicated that the great part of the verified genetic variability in the hybrid populations for these traits were due to additive gene action. The phenotypic correlations between plant height with grain yield and between spike length and rachis internode length were positive and significant to all crosses, showing to have associations between these characters; however the obtained results suggest that large F2 populations will be required to ensure the frequency of desired recombinants, showing semidwarf plants with high yield potential.
publishDate 2000
dc.date.none.fl_str_mv 2000-02-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5770
url https://seer.sct.embrapa.br/index.php/pab/article/view/5770
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5770/2874
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.35, n.2, fev. 2000; 369-379
Pesquisa Agropecuária Brasileira; v.35, n.2, fev. 2000; 369-379
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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