Stay-green QTLs in temperate elite maize

The ability to stay-green (SG) in later stages of the crop cycle is a valuable trait for plants cultivated in standard or stressful environments. Few QTLs studies for SG have been conducted in temperate maize, apart from some experiments carried out with Chinese lines. The aim of our study was to id...

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Autores: Kante, Moctar, Revilla Temiño, Pedro, Fuente Martínez, María de la, Caicedo Villafuerte, Marlon Brainer, Ordás López, Bernardo
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/124061
Acceso en línea:http://hdl.handle.net/10261/124061
Access Level:acceso abierto
Palabra clave:Chlorophyll content
Fluorescence
Photosynthesis
Senescence
Zea mays
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spelling Stay-green QTLs in temperate elite maizeKante, MoctarRevilla Temiño, PedroFuente Martínez, María de laCaicedo Villafuerte, Marlon BrainerOrdás López, BernardoChlorophyll contentFluorescencePhotosynthesisSenescenceZea maysThe ability to stay-green (SG) in later stages of the crop cycle is a valuable trait for plants cultivated in standard or stressful environments. Few QTLs studies for SG have been conducted in temperate maize, apart from some experiments carried out with Chinese lines. The aim of our study was to identify QTLs related to SG in temperate maize using PHG39, an important SG line in private breeding. We developed two large F2 mapping populations by crossing PHG39 to the no stay-green (NSG) lines B73 (Corn Belt Dent) and EA1070 (European flint). Samples of individuals of the extreme tails (high and low) of the populations for visual score were genotyped. We found an association between markers and SG in three regions at bins 1.04–1.09, 5.02 and 10.04–10.06. The association was strong for some markers in chromosome 1, for example, for bnlg1556 the frequency of the SG allele was 0.75 and 0.34 in the high and the low tail, respectively. Furthermore, for this marker the homozygote’s with the SG allele had 4 times more chlorophyll than the homozygote’s with the NSG allele 2 months after flowering. Some alleles most likely conferred SG because they increased the maximum chlorophyll content at flowering while other alleles did by diminishing the rate of senescence. The SG conferred by some alleles could be functional as some favourable alleles for SG were also favourable for kernel weight. Regardless of the physiological basis of the SG, the significant markers detected could be useful for marker assisted selection.Part of thesis submitted by M Kante in partial fulfilment of requirements for a MS degree from the International Centre for Advanced Mediterranean Agronomic Studies (CIHEAM). Research supported by the Spanish National Plan for Research and Development (project code AGL2010-22254/C02-00 and AGL2013-48852-C3-1-R). M Kante acknowledges a Grant from the West Africa Agricultural Productivity Program (WAAPP) and B Ordás a “Ramon y Cajal” contract from the Ministry of Economy and Competitiveness of Spain.Peer reviewedSpringer NatureMinisterio de Economía y Competitividad (España)World Bank GroupConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/124061reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/AGL2013-48852-C3-1-Rhttp://dx.doi.org/10.1007/s10681-015-1575-0Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1240612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Stay-green QTLs in temperate elite maize
title Stay-green QTLs in temperate elite maize
spellingShingle Stay-green QTLs in temperate elite maize
Kante, Moctar
Chlorophyll content
Fluorescence
Photosynthesis
Senescence
Zea mays
title_short Stay-green QTLs in temperate elite maize
title_full Stay-green QTLs in temperate elite maize
title_fullStr Stay-green QTLs in temperate elite maize
title_full_unstemmed Stay-green QTLs in temperate elite maize
title_sort Stay-green QTLs in temperate elite maize
dc.creator.none.fl_str_mv Kante, Moctar
Revilla Temiño, Pedro
Fuente Martínez, María de la
Caicedo Villafuerte, Marlon Brainer
Ordás López, Bernardo
author Kante, Moctar
author_facet Kante, Moctar
Revilla Temiño, Pedro
Fuente Martínez, María de la
Caicedo Villafuerte, Marlon Brainer
Ordás López, Bernardo
author_role author
author2 Revilla Temiño, Pedro
Fuente Martínez, María de la
Caicedo Villafuerte, Marlon Brainer
Ordás López, Bernardo
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
World Bank Group
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Chlorophyll content
Fluorescence
Photosynthesis
Senescence
Zea mays
topic Chlorophyll content
Fluorescence
Photosynthesis
Senescence
Zea mays
description The ability to stay-green (SG) in later stages of the crop cycle is a valuable trait for plants cultivated in standard or stressful environments. Few QTLs studies for SG have been conducted in temperate maize, apart from some experiments carried out with Chinese lines. The aim of our study was to identify QTLs related to SG in temperate maize using PHG39, an important SG line in private breeding. We developed two large F2 mapping populations by crossing PHG39 to the no stay-green (NSG) lines B73 (Corn Belt Dent) and EA1070 (European flint). Samples of individuals of the extreme tails (high and low) of the populations for visual score were genotyped. We found an association between markers and SG in three regions at bins 1.04–1.09, 5.02 and 10.04–10.06. The association was strong for some markers in chromosome 1, for example, for bnlg1556 the frequency of the SG allele was 0.75 and 0.34 in the high and the low tail, respectively. Furthermore, for this marker the homozygote’s with the SG allele had 4 times more chlorophyll than the homozygote’s with the NSG allele 2 months after flowering. Some alleles most likely conferred SG because they increased the maximum chlorophyll content at flowering while other alleles did by diminishing the rate of senescence. The SG conferred by some alleles could be functional as some favourable alleles for SG were also favourable for kernel weight. Regardless of the physiological basis of the SG, the significant markers detected could be useful for marker assisted selection.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/124061
url http://hdl.handle.net/10261/124061
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/AGL2013-48852-C3-1-R
http://dx.doi.org/10.1007/s10681-015-1575-0
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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