Participatory plant breeding to develop biofortified upland rice for marginal environments

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dc.creatorCastro-Pacheco, Sergio Antonio
dc.creatorRabekijana, Ravo
dc.creatorAndriamiarana, Mahevanirina
dc.creatorRaveloson, Harinjaka
dc.creatorRakotomalala, Joël
dc.creatorRamanantsoanirina, Alain
dc.creatorGarin, Vincent
dc.creatorGrenier, Cecile
dc.creatorvom Brocke, Kirsten
dc.date2024
dc.date2025-02-03T15:28:58Z
dc.date2025-02-03T15:28:58Z
dc.date.accessioned2026-06-27T13:35:32Z
dc.descriptionAbstract In the Highlands of Madagascar, where rice is the main staple food, explosive demographic growth has driven the need for the development of upland rice. In that context, a Participatory Plant Breeding (PPB) program conducted by the FOFIFA-Cirad partnership, aims to develop upland rice varieties adapted to farmers’ needs, with superior agronomic performances, and with high grain zinc concentration. In the area, where ferralitic soils with N and P deficiencies prevail, limited fertilizer usage persists due to elevated costs, and upland rice varieties must adapt to these low fertility environments. Thus, this paper aims to identify the adequate selection conditions and methods that allow combining the above-mentioned criteria for selection. So, 56 rice breeding lines, including high-zinc genotypes, were evaluated in field trials with contrasting fertility conditions. A relative selection efficiency analysis demonstrated that selection for yield should be done in moderate fertility environments, while selection for grain zinc concentration could be done across a diverse range of conditions. Through participatory evaluations, we identified that, for this case, grain appreciation was the most important character for deciding whether to select a line, followed by productivity and earliness. We also noted that farmers were more willing to accept a variety if it had higher grain zinc concentration. Finally, we proposed a selection index that combines agronomic, farmers’ and nutritional criteria, with the purpose of selecting lines that fulfill the expectations on these areas. Overall, this paper proposes an adapted methodology for the combination of PPB and biofortification in marginal environments.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/172741
dc.identifier.urihttp://hdl.handle.net/123456789/64217
dc.languageen
dc.publisherCambridge University Press
dc.rightsOpen Access
dc.sourceCastro-Pacheco, S.A.; Rabekijana, R.; Andriamiarana, M.; Raveloson, H.; Rakotomalala, J.; Ramanantsoanirina, A.; Garin, V.; Grenier, C.; vom Brocke, K. (2024) Participatory plant breeding to develop biofortified upland rice for marginal environments. Experimental Agriculture 60: e26. ISSN: 0014-4797
dc.subjectbiofortification
dc.subjectsoil fertility
dc.subjectefficiency
dc.subjectparticipatory plant breeding
dc.subjectupland rice
dc.subjectselection index
dc.titleParticipatory plant breeding to develop biofortified upland rice for marginal environments
dc.typeJournal Article

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