Author:
Sedah Paulin,Djedatin Lambert Gustave,Loko Laura Yêyinou Estelle,Ewedje Eben-Ezer Baba Kayodé,Orobiyi Azize,Gbemavo Chalemagne Dossou Seblodo Judes,Toffa Joelle,Tchakpa Cyrille,Cubry Philippe,Sabot Francois
Abstract
Abstract
Background
Rice production is important for food security in Benin, with a national production largely dominated by the cultivation of the aromatic ecotype IR841, by far the most appreciated by Beninese consumers. However, to maintain agronomical qualities of a given cultivar, the origin and quality of seeds are mandatory and at the heart of the maintenance of yield and of market requests. Following this idea, the objective of the current study was thus to investigate the genetic purity of IR841 varieties collected from rice producers across 22 villages in Benin in relation to their agronomical performances.
Results
For this, agromorphological evaluation of 72 accessions based on 13 quantitative descriptors followed by genotyping with the Illumina Infinium rice 7 K SNP array of 9 accessions was carried out in the presence of 2 controls. Agromorphologic as well as genetic and phylogenetic analyses revealed two groups, the first one Okouta97, Koum47, Nana30, Man118, Ang1 and control sample IR841-2) was characterized by seed accessions provided by the formal seed system, while the second (Koum53, Tchaka41 and Koud46) comprising seeds from local markets or from previous harvests and showing a depression in agronomic performances.
Conclusion
We showed that IR841 seed purity is mandatory for the completion of agronomical performance, and that the farmers’ choice of seeds must be guided and informed to ensure sustainability and food security.
Funder
Institut de Recherche pour le Développement
Publisher
Springer Science and Business Media LLC
Subject
Plant Science,Soil Science,Agronomy and Crop Science
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