Dissecting the effect of heat stress on durum wheat under field conditions

Introduction Heat stress negatively affects wheat production in several ways, mainly by reducing growth rate, photosynthetic capacity and reducing spike fertility. Modeling stress response means analyzing simultaneous relationships among traits affecting the whole plant response and determinants of...

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Autores: Groli, E.L., Frascaroli, E., Maccaferri, M., Ammar, K., Tuberosa, R.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:México
Institución:Centro Internacional de Mejoramiento de Maíz y Trigo
Repositorio:Repositorio Institucional de Publicaciones Multimedia del CIMMYT
OAI Identifier:oai:repository.cimmyt.org:10883/34631
Acceso en línea:https://hdl.handle.net/10883/34631
Access Level:acceso abierto
Palabra clave:AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Durum Wheat
Field Condition
HARD WHEAT
FIELDS
HEAT STRESS
MODELLING
YIELD COMPONENTS
Wheat
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spelling Dissecting the effect of heat stress on durum wheat under field conditionsGroli, E.L.Frascaroli, E.Maccaferri, M.Ammar, K.Tuberosa, R.AGRICULTURAL SCIENCES AND BIOTECHNOLOGYDurum WheatField ConditionHARD WHEATFIELDSHEAT STRESSMODELLINGYIELD COMPONENTSWheatIntroduction Heat stress negatively affects wheat production in several ways, mainly by reducing growth rate, photosynthetic capacity and reducing spike fertility. Modeling stress response means analyzing simultaneous relationships among traits affecting the whole plant response and determinants of grain yield. The aim of this study was to dissect the diverse impacts of heat stress on key yield traits and to identify the most promising sources of alleles for heat tolerance.Methods We evaluated a diverse durum wheat panel of 183 cultivars and breeding lines from worldwide, for their response to long-term heat stress under field conditions (HS) with respect to non stress conditions (NS), considering phenological traits, grain yield (GY) and its components as a function of the timing of heat stress and climatic covariates. We investigated the relationships among plant and environmental variables by means of a structural equation model (SEM) and Genetic SEM (GSEM).Results Over two years of experiments at CENEB, CIMMYT, the effects of HS were particularly pronounced for the normalized difference vegetation index, NDVI (-51.3%), kernel weight per spike, KWS (-40.5%), grain filling period, GFP (-38.7%), and GY (-56.6%). Average temperatures around anthesis were negatively correlated with GY, thousand kernel weight TKW and test weight TWT, but also with spike density, a trait determined before heading/anthesis. Under HS, the correlation between the three major determinants of GY, i.e., fertile spike density, spike fertility and kernel size, were of noticeable magnitude. NDVI measured at medium milk-soft dough stage under HS was correlated with both spike fertility and grain weight while under NS it was less predictive of grain weight but still highly correlated with spike fertility. GSEM modeling suggested that the causal model of performance under HS directly involves genetic effects on GY, NDVI, KWS and HD.Discussion We identified consistently suitable sources of genetic resistance to heat stress to be used in different durum wheat pre-breeding programs. Among those, Desert Durums and CIMMYT'80 germplasm showed the highest degree of adaptation and capacity to yield under high temperatures and can be considered as a valuable source of alleles for adaptation to breed new HS resilient cultivars.Frontiers Media2024-07-30T00:20:20Z2024-07-30T00:20:20Z2024Published Versioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10883/3463110.3389/fpls.2024.1393349151664-462XFrontiers in Plant Science1393349reponame:Repositorio Institucional de Publicaciones Multimedia del CIMMYTinstname:Centro Internacional de Mejoramiento de Maíz y Trigoinstacron:CIMMYTEnglishhttps://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1393349/full#supplementary-materialSwitzerlandCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purposeOpen Accessinfo:eu-repo/semantics/openAccessoai:repository.cimmyt.org:10883/346312024-10-11T19:57:38Z
dc.title.none.fl_str_mv Dissecting the effect of heat stress on durum wheat under field conditions
title Dissecting the effect of heat stress on durum wheat under field conditions
spellingShingle Dissecting the effect of heat stress on durum wheat under field conditions
Groli, E.L.
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Durum Wheat
Field Condition
HARD WHEAT
FIELDS
HEAT STRESS
MODELLING
YIELD COMPONENTS
Wheat
title_short Dissecting the effect of heat stress on durum wheat under field conditions
title_full Dissecting the effect of heat stress on durum wheat under field conditions
title_fullStr Dissecting the effect of heat stress on durum wheat under field conditions
title_full_unstemmed Dissecting the effect of heat stress on durum wheat under field conditions
title_sort Dissecting the effect of heat stress on durum wheat under field conditions
dc.creator.none.fl_str_mv Groli, E.L.
Frascaroli, E.
Maccaferri, M.
Ammar, K.
Tuberosa, R.
author Groli, E.L.
author_facet Groli, E.L.
Frascaroli, E.
Maccaferri, M.
Ammar, K.
Tuberosa, R.
author_role author
author2 Frascaroli, E.
Maccaferri, M.
Ammar, K.
Tuberosa, R.
author2_role author
author
author
author
dc.subject.none.fl_str_mv AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Durum Wheat
Field Condition
HARD WHEAT
FIELDS
HEAT STRESS
MODELLING
YIELD COMPONENTS
Wheat
topic AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Durum Wheat
Field Condition
HARD WHEAT
FIELDS
HEAT STRESS
MODELLING
YIELD COMPONENTS
Wheat
description Introduction Heat stress negatively affects wheat production in several ways, mainly by reducing growth rate, photosynthetic capacity and reducing spike fertility. Modeling stress response means analyzing simultaneous relationships among traits affecting the whole plant response and determinants of grain yield. The aim of this study was to dissect the diverse impacts of heat stress on key yield traits and to identify the most promising sources of alleles for heat tolerance.Methods We evaluated a diverse durum wheat panel of 183 cultivars and breeding lines from worldwide, for their response to long-term heat stress under field conditions (HS) with respect to non stress conditions (NS), considering phenological traits, grain yield (GY) and its components as a function of the timing of heat stress and climatic covariates. We investigated the relationships among plant and environmental variables by means of a structural equation model (SEM) and Genetic SEM (GSEM).Results Over two years of experiments at CENEB, CIMMYT, the effects of HS were particularly pronounced for the normalized difference vegetation index, NDVI (-51.3%), kernel weight per spike, KWS (-40.5%), grain filling period, GFP (-38.7%), and GY (-56.6%). Average temperatures around anthesis were negatively correlated with GY, thousand kernel weight TKW and test weight TWT, but also with spike density, a trait determined before heading/anthesis. Under HS, the correlation between the three major determinants of GY, i.e., fertile spike density, spike fertility and kernel size, were of noticeable magnitude. NDVI measured at medium milk-soft dough stage under HS was correlated with both spike fertility and grain weight while under NS it was less predictive of grain weight but still highly correlated with spike fertility. GSEM modeling suggested that the causal model of performance under HS directly involves genetic effects on GY, NDVI, KWS and HD.Discussion We identified consistently suitable sources of genetic resistance to heat stress to be used in different durum wheat pre-breeding programs. Among those, Desert Durums and CIMMYT'80 germplasm showed the highest degree of adaptation and capacity to yield under high temperatures and can be considered as a valuable source of alleles for adaptation to breed new HS resilient cultivars.
publishDate 2024
dc.date.none.fl_str_mv 2024-07-30T00:20:20Z
2024-07-30T00:20:20Z
2024
dc.type.none.fl_str_mv Published Version
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10883/34631
10.3389/fpls.2024.1393349
url https://hdl.handle.net/10883/34631
identifier_str_mv 10.3389/fpls.2024.1393349
dc.language.none.fl_str_mv English
language_invalid_str_mv English
dc.relation.none.fl_str_mv https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1393349/full#supplementary-material
dc.rights.none.fl_str_mv Open Access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Open Access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Switzerland
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv 15
1664-462X
Frontiers in Plant Science
1393349
reponame:Repositorio Institucional de Publicaciones Multimedia del CIMMYT
instname:Centro Internacional de Mejoramiento de Maíz y Trigo
instacron:CIMMYT
instname_str Centro Internacional de Mejoramiento de Maíz y Trigo
instacron_str CIMMYT
institution CIMMYT
reponame_str Repositorio Institucional de Publicaciones Multimedia del CIMMYT
collection Repositorio Institucional de Publicaciones Multimedia del CIMMYT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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