Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm

Detalhes bibliográficos
Autor(a) principal: DINIZ,RAFAEL P.
Data de Publicação: 2019
Outros Autores: OLIVEIRA,EDER J. DE
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500859
Resumo: Abstract: This study aimed to estimate genetic parameters and correlations between morphological, agronomic and root quality traits of cassava plants, as well as to study cause and effect relationships through path analysis. A total of 814 genotypes were evaluated from 2011 to 2015. The joint analysis of the data was performed by the mixed models approach. The predicted genetic values of the genotypes were used to estimate the genetic correlations among as well the path analysis. The estimates of heritability of the genotype means ranged from 0.31 (commercial fresh root yield – CRY) to 0.62 (plant height - PLH). The highest genetic correlation coefficient estimates were observed for starch yield (STY) × total fresh root yield (FRY) (0.97). The results of the path analysis showed that FRY had the highest direct effect on STY, but the indirect selection based on FRY was not efficient to improve the gain of STY.
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spelling Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasmManihot esculenta Crantzheritabilitycorrelationcorrelated response.Abstract: This study aimed to estimate genetic parameters and correlations between morphological, agronomic and root quality traits of cassava plants, as well as to study cause and effect relationships through path analysis. A total of 814 genotypes were evaluated from 2011 to 2015. The joint analysis of the data was performed by the mixed models approach. The predicted genetic values of the genotypes were used to estimate the genetic correlations among as well the path analysis. The estimates of heritability of the genotype means ranged from 0.31 (commercial fresh root yield – CRY) to 0.62 (plant height - PLH). The highest genetic correlation coefficient estimates were observed for starch yield (STY) × total fresh root yield (FRY) (0.97). The results of the path analysis showed that FRY had the highest direct effect on STY, but the indirect selection based on FRY was not efficient to improve the gain of STY.Academia Brasileira de Ciências2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500859Anais da Academia Brasileira de Ciências v.91 n.3 2019reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765201920180387info:eu-repo/semantics/openAccessDINIZ,RAFAEL P.OLIVEIRA,EDER J. DEeng2019-08-14T00:00:00Zoai:scielo:S0001-37652019000500859Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2019-08-14T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
title Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
spellingShingle Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
DINIZ,RAFAEL P.
Manihot esculenta Crantz
heritability
correlation
correlated response.
title_short Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
title_full Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
title_fullStr Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
title_full_unstemmed Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
title_sort Genetic parameters, path analysis and indirect selection of agronomic traits of cassava germplasm
author DINIZ,RAFAEL P.
author_facet DINIZ,RAFAEL P.
OLIVEIRA,EDER J. DE
author_role author
author2 OLIVEIRA,EDER J. DE
author2_role author
dc.contributor.author.fl_str_mv DINIZ,RAFAEL P.
OLIVEIRA,EDER J. DE
dc.subject.por.fl_str_mv Manihot esculenta Crantz
heritability
correlation
correlated response.
topic Manihot esculenta Crantz
heritability
correlation
correlated response.
description Abstract: This study aimed to estimate genetic parameters and correlations between morphological, agronomic and root quality traits of cassava plants, as well as to study cause and effect relationships through path analysis. A total of 814 genotypes were evaluated from 2011 to 2015. The joint analysis of the data was performed by the mixed models approach. The predicted genetic values of the genotypes were used to estimate the genetic correlations among as well the path analysis. The estimates of heritability of the genotype means ranged from 0.31 (commercial fresh root yield – CRY) to 0.62 (plant height - PLH). The highest genetic correlation coefficient estimates were observed for starch yield (STY) × total fresh root yield (FRY) (0.97). The results of the path analysis showed that FRY had the highest direct effect on STY, but the indirect selection based on FRY was not efficient to improve the gain of STY.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500859
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500859
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0001-3765201920180387
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.91 n.3 2019
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
instacron:ABC
instname_str Academia Brasileira de Ciências (ABC)
instacron_str ABC
institution ABC
reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
repository.mail.fl_str_mv ||aabc@abc.org.br
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