Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus

Detalhes bibliográficos
Autor(a) principal: Reis,Gabriel Gonçalves dos
Data de Publicação: 2017
Outros Autores: Pereira,Felipe Bermudez, Granato,Italo Stefanine Correia, DoVale,Júlio César, Fritsche-Neto,Roberto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Ceres
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2017000300266
Resumo: ABSTRACT Brazil generates an annual demand for more than 2.83 million tons of phosphate fertilizers. Part of this is due to low P use efficiency (PUE) by plants, particularly in current maize cultivars. Thus, the aim of this study was to create indexes that allow accurate selection of maize genotypes with high PUE under conditions of either low or high P availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Universidade Federal de Viçosa in October 2010. We evaluated 39 experimental hybrid combinations and 14 maize inbred lines with divergent PUE under two conditions of P availability. The relative importance of the traits studied was analyzed and estimated by principal component analysis, factor analysis, and establishment of selection indexes. To obtain genotypes responsive to high P availability, the index SIHP (selection index for high phosphorus) = 0.3985 RDM + 0.3099 SDM + 0.5567 RLLAT + 0.2340 PUEb - 0.1139 SRS is recommended. To obtain genotypes tolerant to low P availability, the index SILP (selection index for low phosphorus) = 0.3548 RDM + 0.3996 RLLAT + 0.3344 SDM + 0.0041 SH/RS - 0.1019 SRS is suggested.
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spelling Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorusabiotic stressZea maysplant breedingearly selectionABSTRACT Brazil generates an annual demand for more than 2.83 million tons of phosphate fertilizers. Part of this is due to low P use efficiency (PUE) by plants, particularly in current maize cultivars. Thus, the aim of this study was to create indexes that allow accurate selection of maize genotypes with high PUE under conditions of either low or high P availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Universidade Federal de Viçosa in October 2010. We evaluated 39 experimental hybrid combinations and 14 maize inbred lines with divergent PUE under two conditions of P availability. The relative importance of the traits studied was analyzed and estimated by principal component analysis, factor analysis, and establishment of selection indexes. To obtain genotypes responsive to high P availability, the index SIHP (selection index for high phosphorus) = 0.3985 RDM + 0.3099 SDM + 0.5567 RLLAT + 0.2340 PUEb - 0.1139 SRS is recommended. To obtain genotypes tolerant to low P availability, the index SILP (selection index for low phosphorus) = 0.3548 RDM + 0.3996 RLLAT + 0.3344 SDM + 0.0041 SH/RS - 0.1019 SRS is suggested.Universidade Federal de Viçosa2017-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2017000300266Revista Ceres v.64 n.3 2017reponame:Revista Ceresinstname:Universidade Federal de Viçosa (UFV)instacron:UFV10.1590/0034-737x201764030007info:eu-repo/semantics/openAccessReis,Gabriel Gonçalves dosPereira,Felipe BermudezGranato,Italo Stefanine CorreiaDoVale,Júlio CésarFritsche-Neto,Robertoeng2017-07-06T00:00:00ZRevista
dc.title.none.fl_str_mv Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
title Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
spellingShingle Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
Reis,Gabriel Gonçalves dos
abiotic stress
Zea mays
plant breeding
early selection
title_short Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
title_full Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
title_fullStr Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
title_full_unstemmed Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
title_sort Tropical maize selection indexes genotypes for efficiency in use of nutrients: phosphorus
author Reis,Gabriel Gonçalves dos
author_facet Reis,Gabriel Gonçalves dos
Pereira,Felipe Bermudez
Granato,Italo Stefanine Correia
DoVale,Júlio César
Fritsche-Neto,Roberto
author_role author
author2 Pereira,Felipe Bermudez
Granato,Italo Stefanine Correia
DoVale,Júlio César
Fritsche-Neto,Roberto
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Reis,Gabriel Gonçalves dos
Pereira,Felipe Bermudez
Granato,Italo Stefanine Correia
DoVale,Júlio César
Fritsche-Neto,Roberto
dc.subject.por.fl_str_mv abiotic stress
Zea mays
plant breeding
early selection
topic abiotic stress
Zea mays
plant breeding
early selection
dc.description.none.fl_txt_mv ABSTRACT Brazil generates an annual demand for more than 2.83 million tons of phosphate fertilizers. Part of this is due to low P use efficiency (PUE) by plants, particularly in current maize cultivars. Thus, the aim of this study was to create indexes that allow accurate selection of maize genotypes with high PUE under conditions of either low or high P availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Universidade Federal de Viçosa in October 2010. We evaluated 39 experimental hybrid combinations and 14 maize inbred lines with divergent PUE under two conditions of P availability. The relative importance of the traits studied was analyzed and estimated by principal component analysis, factor analysis, and establishment of selection indexes. To obtain genotypes responsive to high P availability, the index SIHP (selection index for high phosphorus) = 0.3985 RDM + 0.3099 SDM + 0.5567 RLLAT + 0.2340 PUEb - 0.1139 SRS is recommended. To obtain genotypes tolerant to low P availability, the index SILP (selection index for low phosphorus) = 0.3548 RDM + 0.3996 RLLAT + 0.3344 SDM + 0.0041 SH/RS - 0.1019 SRS is suggested.
description ABSTRACT Brazil generates an annual demand for more than 2.83 million tons of phosphate fertilizers. Part of this is due to low P use efficiency (PUE) by plants, particularly in current maize cultivars. Thus, the aim of this study was to create indexes that allow accurate selection of maize genotypes with high PUE under conditions of either low or high P availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Universidade Federal de Viçosa in October 2010. We evaluated 39 experimental hybrid combinations and 14 maize inbred lines with divergent PUE under two conditions of P availability. The relative importance of the traits studied was analyzed and estimated by principal component analysis, factor analysis, and establishment of selection indexes. To obtain genotypes responsive to high P availability, the index SIHP (selection index for high phosphorus) = 0.3985 RDM + 0.3099 SDM + 0.5567 RLLAT + 0.2340 PUEb - 0.1139 SRS is recommended. To obtain genotypes tolerant to low P availability, the index SILP (selection index for low phosphorus) = 0.3548 RDM + 0.3996 RLLAT + 0.3344 SDM + 0.0041 SH/RS - 0.1019 SRS is suggested.
publishDate 2017
dc.date.none.fl_str_mv 2017-06-01
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=S0034-737X2017000300266
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2017000300266
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0034-737x201764030007
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 Viçosa
publisher.none.fl_str_mv Universidade Federal de Viçosa
dc.source.none.fl_str_mv Revista Ceres v.64 n.3 2017
reponame:Revista Ceres
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str Revista Ceres
collection Revista Ceres
repository.name.fl_str_mv
repository.mail.fl_str_mv
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