Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bragantia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052022000100232 |
Resumo: | ABSTRACT The aims of this study were: to assess the genetic relationship of supersweet corn populations; and to establish the heterotic pattern of 49 supersweet (sh2) corn inbreds on F2S5 generation based on molecular marker data and specific combining ability. Forty-nine inbreds were evaluated using 20 SSR molecular markers, which were allocated into heterotic groups according to the discriminant principal component analysis. Twelve inbreds were crossed in a complete diallel scheme. The 81 entries (hybrids developed, parental lines and three commercial checks) were evaluated in a triple partial balanced lattice design (9 × 9) during the growing seasons of 2016/2017 and 2017. The general combining ability (GCA) and specific combining ability (SCA) were estimated. The SCA values were used to set the heterotic patterns of the parental lines as well. Commercial yield without husk (CYWH) and ear length (EL) were more informative to set the heterotic groups. Additive and non-additive effects were important on the genetic control of the evaluated traits. However, for five of the six traits, the non-additive/dominance genetic effects showed to be more important in both environments. In fact, the hybrids developed among tropical by temperate germplasm had better performance than those ones developed within the temperate germplasm itself. SSR based-genetic distance demonstrate to be a reliable predictor as significant correlation was obtained between genetic distance with hybrid performance (for length of ears, ear height and CYWH) and SCA for all observed traits. The non-additive genetic effect that predominantly controlled all traits was the feasible explanation for the good prediction. |
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Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn linesshrunkenZea maysSSR genetic distancehybrid performanceABSTRACT The aims of this study were: to assess the genetic relationship of supersweet corn populations; and to establish the heterotic pattern of 49 supersweet (sh2) corn inbreds on F2S5 generation based on molecular marker data and specific combining ability. Forty-nine inbreds were evaluated using 20 SSR molecular markers, which were allocated into heterotic groups according to the discriminant principal component analysis. Twelve inbreds were crossed in a complete diallel scheme. The 81 entries (hybrids developed, parental lines and three commercial checks) were evaluated in a triple partial balanced lattice design (9 × 9) during the growing seasons of 2016/2017 and 2017. The general combining ability (GCA) and specific combining ability (SCA) were estimated. The SCA values were used to set the heterotic patterns of the parental lines as well. Commercial yield without husk (CYWH) and ear length (EL) were more informative to set the heterotic groups. Additive and non-additive effects were important on the genetic control of the evaluated traits. However, for five of the six traits, the non-additive/dominance genetic effects showed to be more important in both environments. In fact, the hybrids developed among tropical by temperate germplasm had better performance than those ones developed within the temperate germplasm itself. SSR based-genetic distance demonstrate to be a reliable predictor as significant correlation was obtained between genetic distance with hybrid performance (for length of ears, ear height and CYWH) and SCA for all observed traits. The non-additive genetic effect that predominantly controlled all traits was the feasible explanation for the good prediction.Instituto Agronômico de Campinas2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052022000100232Bragantia v.81 2022reponame:Bragantiainstname:Instituto Agronômico de Campinas (IAC)instacron:IAC10.1590/1678-4499.20220056info:eu-repo/semantics/openAccessSouza Neto,Israel Leite deFigueiredo,Alex Sandro TorreUhdre,Renan SantosContreras-Soto,Rodrigo IvanScapim,Carlos AlbertoZanotto,Mauricio Dutraeng2022-08-18T00:00:00Zoai:scielo:S0006-87052022000100232Revistahttps://www.scielo.br/j/brag/https://old.scielo.br/oai/scielo-oai.phpbragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br1678-44990006-8705opendoar:2022-08-18T00:00Bragantia - Instituto Agronômico de Campinas (IAC)false |
dc.title.none.fl_str_mv |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
title |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
spellingShingle |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines Souza Neto,Israel Leite de shrunken Zea mays SSR genetic distance hybrid performance |
title_short |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
title_full |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
title_fullStr |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
title_full_unstemmed |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
title_sort |
Combining ability and heterotic pattern in relation to F1 performance of tropical and temperate-adapted sweet corn lines |
author |
Souza Neto,Israel Leite de |
author_facet |
Souza Neto,Israel Leite de Figueiredo,Alex Sandro Torre Uhdre,Renan Santos Contreras-Soto,Rodrigo Ivan Scapim,Carlos Alberto Zanotto,Mauricio Dutra |
author_role |
author |
author2 |
Figueiredo,Alex Sandro Torre Uhdre,Renan Santos Contreras-Soto,Rodrigo Ivan Scapim,Carlos Alberto Zanotto,Mauricio Dutra |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Souza Neto,Israel Leite de Figueiredo,Alex Sandro Torre Uhdre,Renan Santos Contreras-Soto,Rodrigo Ivan Scapim,Carlos Alberto Zanotto,Mauricio Dutra |
dc.subject.por.fl_str_mv |
shrunken Zea mays SSR genetic distance hybrid performance |
topic |
shrunken Zea mays SSR genetic distance hybrid performance |
description |
ABSTRACT The aims of this study were: to assess the genetic relationship of supersweet corn populations; and to establish the heterotic pattern of 49 supersweet (sh2) corn inbreds on F2S5 generation based on molecular marker data and specific combining ability. Forty-nine inbreds were evaluated using 20 SSR molecular markers, which were allocated into heterotic groups according to the discriminant principal component analysis. Twelve inbreds were crossed in a complete diallel scheme. The 81 entries (hybrids developed, parental lines and three commercial checks) were evaluated in a triple partial balanced lattice design (9 × 9) during the growing seasons of 2016/2017 and 2017. The general combining ability (GCA) and specific combining ability (SCA) were estimated. The SCA values were used to set the heterotic patterns of the parental lines as well. Commercial yield without husk (CYWH) and ear length (EL) were more informative to set the heterotic groups. Additive and non-additive effects were important on the genetic control of the evaluated traits. However, for five of the six traits, the non-additive/dominance genetic effects showed to be more important in both environments. In fact, the hybrids developed among tropical by temperate germplasm had better performance than those ones developed within the temperate germplasm itself. SSR based-genetic distance demonstrate to be a reliable predictor as significant correlation was obtained between genetic distance with hybrid performance (for length of ears, ear height and CYWH) and SCA for all observed traits. The non-additive genetic effect that predominantly controlled all traits was the feasible explanation for the good prediction. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
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=S0006-87052022000100232 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052022000100232 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4499.20220056 |
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 |
Instituto Agronômico de Campinas |
publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
dc.source.none.fl_str_mv |
Bragantia v.81 2022 reponame:Bragantia instname:Instituto Agronômico de Campinas (IAC) instacron:IAC |
instname_str |
Instituto Agronômico de Campinas (IAC) |
instacron_str |
IAC |
institution |
IAC |
reponame_str |
Bragantia |
collection |
Bragantia |
repository.name.fl_str_mv |
Bragantia - Instituto Agronômico de Campinas (IAC) |
repository.mail.fl_str_mv |
bragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br |
_version_ |
1754193308431679488 |