Combining ability of tropical maize cultivars in organic and conventional production systems
Autor(a) principal: | |
---|---|
Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000500001 |
Resumo: | The objectives were to identify maize germplasm for the organic productions system and to compare the genetic effects of the grain yield of maize cultivars in organic and conventional production systems. Diallel crosses were made between six maize cultivars and the hybrid combinations were evaluated in conventional and organic production systems. The hybrid combinations produced different grain yields in the two production systems. The interaction between general combining ability and production systems was significant for grain yield, ear height and number of ears. This indicates that the additive genetic effects differ in organic and conventional production systems. The specific combining abilities (SCA) were significant for grain yield and plant height, indicating a significant difference between the non-additive effects. However, the SCA x production systems interactions were not significant for those traits. It was concluded that for the development of maize cultivars for the organic production system, selection must be made in the specific environment for the expression of favorable alleles that confer advantages for adapting to this system; the general combining ability of genitors is different for the two production systems, but the specific combining ability isn't different in organic and conventional systems. |
id |
UFSM-2_410bb2e6c3e944c8946fef068aaf881c |
---|---|
oai_identifier_str |
oai:scielo:S0103-84782011000500001 |
network_acronym_str |
UFSM-2 |
network_name_str |
Ciência rural (Online) |
repository_id_str |
|
spelling |
Combining ability of tropical maize cultivars in organic and conventional production systemsZea maysbreedingselectiondiallelgenotype x environment interactionThe objectives were to identify maize germplasm for the organic productions system and to compare the genetic effects of the grain yield of maize cultivars in organic and conventional production systems. Diallel crosses were made between six maize cultivars and the hybrid combinations were evaluated in conventional and organic production systems. The hybrid combinations produced different grain yields in the two production systems. The interaction between general combining ability and production systems was significant for grain yield, ear height and number of ears. This indicates that the additive genetic effects differ in organic and conventional production systems. The specific combining abilities (SCA) were significant for grain yield and plant height, indicating a significant difference between the non-additive effects. However, the SCA x production systems interactions were not significant for those traits. It was concluded that for the development of maize cultivars for the organic production system, selection must be made in the specific environment for the expression of favorable alleles that confer advantages for adapting to this system; the general combining ability of genitors is different for the two production systems, but the specific combining ability isn't different in organic and conventional systems.Universidade Federal de Santa Maria2011-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000500001Ciência Rural v.41 n.5 2011reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84782011005000041info:eu-repo/semantics/openAccessOliveira,Lucimar Rodrigues deMiranda,Glauco VieiraDeLima,Rodrigo OliveiraSouza,Leandro Vagno deGalvão,João Carlos CardosoSantos,Izabel Cristina doseng2011-06-06T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Combining ability of tropical maize cultivars in organic and conventional production systems |
title |
Combining ability of tropical maize cultivars in organic and conventional production systems |
spellingShingle |
Combining ability of tropical maize cultivars in organic and conventional production systems Oliveira,Lucimar Rodrigues de Zea mays breeding selection diallel genotype x environment interaction |
title_short |
Combining ability of tropical maize cultivars in organic and conventional production systems |
title_full |
Combining ability of tropical maize cultivars in organic and conventional production systems |
title_fullStr |
Combining ability of tropical maize cultivars in organic and conventional production systems |
title_full_unstemmed |
Combining ability of tropical maize cultivars in organic and conventional production systems |
title_sort |
Combining ability of tropical maize cultivars in organic and conventional production systems |
author |
Oliveira,Lucimar Rodrigues de |
author_facet |
Oliveira,Lucimar Rodrigues de Miranda,Glauco Vieira DeLima,Rodrigo Oliveira Souza,Leandro Vagno de Galvão,João Carlos Cardoso Santos,Izabel Cristina dos |
author_role |
author |
author2 |
Miranda,Glauco Vieira DeLima,Rodrigo Oliveira Souza,Leandro Vagno de Galvão,João Carlos Cardoso Santos,Izabel Cristina dos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira,Lucimar Rodrigues de Miranda,Glauco Vieira DeLima,Rodrigo Oliveira Souza,Leandro Vagno de Galvão,João Carlos Cardoso Santos,Izabel Cristina dos |
dc.subject.por.fl_str_mv |
Zea mays breeding selection diallel genotype x environment interaction |
topic |
Zea mays breeding selection diallel genotype x environment interaction |
description |
The objectives were to identify maize germplasm for the organic productions system and to compare the genetic effects of the grain yield of maize cultivars in organic and conventional production systems. Diallel crosses were made between six maize cultivars and the hybrid combinations were evaluated in conventional and organic production systems. The hybrid combinations produced different grain yields in the two production systems. The interaction between general combining ability and production systems was significant for grain yield, ear height and number of ears. This indicates that the additive genetic effects differ in organic and conventional production systems. The specific combining abilities (SCA) were significant for grain yield and plant height, indicating a significant difference between the non-additive effects. However, the SCA x production systems interactions were not significant for those traits. It was concluded that for the development of maize cultivars for the organic production system, selection must be made in the specific environment for the expression of favorable alleles that confer advantages for adapting to this system; the general combining ability of genitors is different for the two production systems, but the specific combining ability isn't different in organic and conventional systems. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-05-01 |
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=S0103-84782011000500001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000500001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-84782011005000041 |
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 |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.41 n.5 2011 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140539748384768 |