Genetic parameters and path analysis for root yield of cassava under drought and early harvest

Detalhes bibliográficos
Autor(a) principal: Oliveira,Carlos Roberto Silva de
Data de Publicação: 2021
Outros Autores: Borel,Jerônimo Constantino, Pereira,Danilo Alves, Carvalho,Bruna Parente de, Medrado,Ericles da Silva, Ishikawa,Francine Hiromi, Oliveira,Eder Jorge de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Crop Breeding and Applied Biotechnology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332021000300203
Resumo: Abstract The objectives of this study were to estimate genetic parameters and identify traits that contribute to early yield in Manihot esculenta Crantz. Ten traits were evaluated in two experiments, one with 138 genotypes and the other with 133, using a completely randomized block design with four replications. All genotype effects were significant. The accuracy was high for the traits, except leaf retention (0.57), and reliability ranged from 0.33 to 0.75. Root weight (RW) and number of roots (NR) showed the highest selection effectiveness (CV r ), although the estimate was less than 1. Moreover, RW and NR obtained high genetic correlation (0.70). Path analysis showed that only number of roots had a significant direct effect on root weight (0.49), and no indirect effect was found. Therefore, accessions exhibited sufficient genetic variability, and indirect selection based on early evaluation of number of roots can be applied in cassava breeding for fresh root yield, increasing gain over time.
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spelling Genetic parameters and path analysis for root yield of cassava under drought and early harvestManihot esculentadrought tolerancegenetic variabilitygenotypic correlationAbstract The objectives of this study were to estimate genetic parameters and identify traits that contribute to early yield in Manihot esculenta Crantz. Ten traits were evaluated in two experiments, one with 138 genotypes and the other with 133, using a completely randomized block design with four replications. All genotype effects were significant. The accuracy was high for the traits, except leaf retention (0.57), and reliability ranged from 0.33 to 0.75. Root weight (RW) and number of roots (NR) showed the highest selection effectiveness (CV r ), although the estimate was less than 1. Moreover, RW and NR obtained high genetic correlation (0.70). Path analysis showed that only number of roots had a significant direct effect on root weight (0.49), and no indirect effect was found. Therefore, accessions exhibited sufficient genetic variability, and indirect selection based on early evaluation of number of roots can be applied in cassava breeding for fresh root yield, increasing gain over time.Crop Breeding and Applied Biotechnology2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332021000300203Crop Breeding and Applied Biotechnology v.21 n.3 2021reponame:Crop Breeding and Applied Biotechnologyinstname:Sociedade Brasileira de Melhoramento de Plantasinstacron:CBAB10.1590/1984-70332021v21n3a46info:eu-repo/semantics/openAccessOliveira,Carlos Roberto Silva deBorel,Jerônimo ConstantinoPereira,Danilo AlvesCarvalho,Bruna Parente deMedrado,Ericles da SilvaIshikawa,Francine HiromiOliveira,Eder Jorge deeng2021-10-22T00:00:00Zoai:scielo:S1984-70332021000300203Revistahttps://cbab.sbmp.org.br/#ONGhttps://old.scielo.br/oai/scielo-oai.phpcbabjournal@gmail.com||cbab@ufv.br1984-70331518-7853opendoar:2021-10-22T00:00Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantasfalse
dc.title.none.fl_str_mv Genetic parameters and path analysis for root yield of cassava under drought and early harvest
title Genetic parameters and path analysis for root yield of cassava under drought and early harvest
spellingShingle Genetic parameters and path analysis for root yield of cassava under drought and early harvest
Oliveira,Carlos Roberto Silva de
Manihot esculenta
drought tolerance
genetic variability
genotypic correlation
title_short Genetic parameters and path analysis for root yield of cassava under drought and early harvest
title_full Genetic parameters and path analysis for root yield of cassava under drought and early harvest
title_fullStr Genetic parameters and path analysis for root yield of cassava under drought and early harvest
title_full_unstemmed Genetic parameters and path analysis for root yield of cassava under drought and early harvest
title_sort Genetic parameters and path analysis for root yield of cassava under drought and early harvest
author Oliveira,Carlos Roberto Silva de
author_facet Oliveira,Carlos Roberto Silva de
Borel,Jerônimo Constantino
Pereira,Danilo Alves
Carvalho,Bruna Parente de
Medrado,Ericles da Silva
Ishikawa,Francine Hiromi
Oliveira,Eder Jorge de
author_role author
author2 Borel,Jerônimo Constantino
Pereira,Danilo Alves
Carvalho,Bruna Parente de
Medrado,Ericles da Silva
Ishikawa,Francine Hiromi
Oliveira,Eder Jorge de
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Oliveira,Carlos Roberto Silva de
Borel,Jerônimo Constantino
Pereira,Danilo Alves
Carvalho,Bruna Parente de
Medrado,Ericles da Silva
Ishikawa,Francine Hiromi
Oliveira,Eder Jorge de
dc.subject.por.fl_str_mv Manihot esculenta
drought tolerance
genetic variability
genotypic correlation
topic Manihot esculenta
drought tolerance
genetic variability
genotypic correlation
description Abstract The objectives of this study were to estimate genetic parameters and identify traits that contribute to early yield in Manihot esculenta Crantz. Ten traits were evaluated in two experiments, one with 138 genotypes and the other with 133, using a completely randomized block design with four replications. All genotype effects were significant. The accuracy was high for the traits, except leaf retention (0.57), and reliability ranged from 0.33 to 0.75. Root weight (RW) and number of roots (NR) showed the highest selection effectiveness (CV r ), although the estimate was less than 1. Moreover, RW and NR obtained high genetic correlation (0.70). Path analysis showed that only number of roots had a significant direct effect on root weight (0.49), and no indirect effect was found. Therefore, accessions exhibited sufficient genetic variability, and indirect selection based on early evaluation of number of roots can be applied in cassava breeding for fresh root yield, increasing gain over time.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
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=S1984-70332021000300203
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332021000300203
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1984-70332021v21n3a46
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 Crop Breeding and Applied Biotechnology
publisher.none.fl_str_mv Crop Breeding and Applied Biotechnology
dc.source.none.fl_str_mv Crop Breeding and Applied Biotechnology v.21 n.3 2021
reponame:Crop Breeding and Applied Biotechnology
instname:Sociedade Brasileira de Melhoramento de Plantas
instacron:CBAB
instname_str Sociedade Brasileira de Melhoramento de Plantas
instacron_str CBAB
institution CBAB
reponame_str Crop Breeding and Applied Biotechnology
collection Crop Breeding and Applied Biotechnology
repository.name.fl_str_mv Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantas
repository.mail.fl_str_mv cbabjournal@gmail.com||cbab@ufv.br
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