Format du dépôt |
Fichier |
Type de dépôt |
Article dans une revue |
Titre |
en
Stability of grain zinc concentrations across lowland rice environments favors zinc biofortification breeding
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Résumé |
en
Introduction: One-third of the human population consumes insufficient zinc (Zn) to sustain a healthy life. Zn deficiency can be relieved by increasing the Zn concentration ([Zn]) in staple food crops through biofortification breeding. Rice is a poor source of Zn, and in countries predominantly relying on rice without sufficient dietary diversification, such as Madagascar, Zn biofortification is a priority.
Methods: Multi-environmental trials were performed in Madagascar over two years, 2019 and 2020, to screen a total of 28 genotypes including local and imported germplasm. The trials were conducted in the highlands of Ankazomiriotra, Anjiro, and Behenji and in Morovoay, a location representative of the coastal ecosystem. Contributions of genotype (G), environment (E), and G by E interactions (GEIs) were investigated.
Result: The grain [Zn] of local Malagasy rice varieties was similar to the internationally established grain [Zn] baseline of 18–20 μg/g for brown rice. While several imported breeding lines reached 50% of our breeding target set at +12 μg/g, only few met farmers’ appreciation criteria. Levels of grain [Zn] were stable across E. The G effects accounted for a main fraction of the variation, 76% to 83% of the variation for year 1 and year 2 trials, respectively, while GEI effects were comparatively small, contributing 23% to 9%. This contrasted with dominant E and GEI effects for grain yield. Our results indicate that local varieties tested contained insufficient Zn to alleviate Zn malnutrition, and developing new Zn-biofortified varieties should therefore be a priority. GGE analysis did not distinguish mega-environments for grain [Zn], whereas at least three mega-environments existed for grain yield, differentiated by the presence of limiting environmental conditions and responsiveness to improved soil fertility.
Discussion: Our main conclusion reveals that grain [Zn] seems to be under strong genetic control in the agro-climatic conditions of Madagascar. We could identify several interesting genotypes as potential donors for the breeding program, among those BF156, with a relatively stable grain [Zn] (AMMI stability value (ASV) = 0.89) reaching our target (>26 μg/g). While selection for grain yield, general adaptation, and farmers’ appreciation would have to rely on multi-environment testing, selection for grain [Zn] could be centralized in earlier generations.
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Auteur(s)
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Mbolatantely Rakotondramanana
1, 2
, Matthias Wissuwa
3
, Landiarimisa Ramanankaja
4
, Tantely Razafimbelo
4
, James Stangoulis
5
, Cecile Grenier
6, 7, 8
1
FOFIFA -
Centre National de Recherche Appliquée au Développement Rural
( 300870 )
- CENRADERU
Antananarivo
- Madagascar
2
INRES -
Institute of Crop Science and Resource Conservation [Bonn]
( 211676 )
- Katzenburgweg 1, D-53115 Bonn
- Allemagne
-
Rheinische Friedrich-Wilhelms-Universität Bonn ( 328110 )
3
JIRCAS -
Japan International Research Center for Agricultural Sciences
( 443417 )
- Japon
4
LRI -
Laboratoire des RadioIsotopes
( 208298 )
- Laboratoire des Radio-Isotopes
BP3383, Route d'Andraisoro, Antananarivo 101
- Madagascar
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Université d'Antananarivo ( 300866 )
5
Flinders University [Adelaide, Australia]
( 143009 )
- GPO Box 2100, Adelaide 5001, South Australia
- Australie
6
UMR AGAP -
Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
( 1096441 )
- TA A-108 / 03 - Avenue Agropolis - 34398 Montpellier Cedex 5 France
- France
-
Centre de Coopération Internationale en Recherche Agronomique pour le Développement UMR108 ( 11574 )
;
-
Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement ( 577435 )
;
-
Institut Agro Montpellier ( 1096330 )
;
-
Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement ( 1042499 )
;
-
Université de Montpellier ( 1100589 )
7
Cirad-BIOS -
Département Systèmes Biologiques
( 168219 )
- Avenue Agropolis TA A-DIR / 04 34398 Montpellier Cedex 5 France
- France
-
Centre de Coopération Internationale en Recherche Agronomique pour le Développement ( 11574 )
8
CIAT -
International Center for Tropical Agriculture [Colombie]
( 511364 )
- Headquarters, Cali, Colombia
- Colombie
-
Consultative Group on International Agricultural Research [CGIAR] ( 300980 )
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Langue du document |
Anglais
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Licence |
Paternité - Pas d'utilisation commerciale
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Nom de la revue |
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Public visé |
Scientifique
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Date de publication |
2024-02-13
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Volume |
15
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Page/Identifiant |
1293831
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Version du document |
version éditeur
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Vulgarisation |
Non
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Comité de lecture |
Oui
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Audience |
Internationale
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Date de publication électronique |
2024-02-13
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URL éditeur |
https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1293831/full
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Domaine(s) |
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Sciences du Vivant [q-bio]/Sciences agricoles
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Sciences du Vivant [q-bio]/Sciences agricoles/Sciences et techniques de l'agriculture
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Financement |
-
The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This research was included in a project for research and development of rice biofortification in Madagascar. The “Rice biofortification in Madagascar” project was supported by HarvestPlus, part of the CGIAR Research Program Agriculture for Nutrition and Health (A4NH), Grant No. 2021H6468.CIR., the CGIAR Research Program on Rice Agri-Food Systems (RICE) and by the Science and Technology Research Partnership for Sustainable Development (SATREPS), Japan Science and Technology Agency (JST)/Japan International Cooperation Agency (JICA)—Grant No. JPMJSA1608. The grain Zn analysis was supported by HarvestPlus funding to JS. MW has been partly funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC 2070 – 390732324.
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Thésaurus Inrae |
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Voir aussi |
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https://www.frontiersin.org/articles/10.3389/fpls.2024.1293831/full#supplementary-material
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Mots-clés |
en
Oryza sativa, baseline zinc concentration, genotype by environment interactions, grain yield, Zn biofortification breeding targets, stability
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DOI |
10.3389/fpls.2024.1293831 |
Pubmed Id |
38414643 |
UT key WOS |
001175007500001 |