Sedah P., Djedatin L. G., Loko L. Y. E., Ewedje Eebk, Orobiyi A., Gbemavo Cdsj, Toffa J., Tchakpa C., Cubry Philippe, Sabot François. (2023). Impact of seed origin and genetic drift of improved rice variety IR841 in Benin. Rice, 16 (1), p. 48 [8 p.]. ISSN 1939-8425.
Titre du document
Impact of seed origin and genetic drift of improved rice variety IR841 in Benin
Année de publication
2023
Auteurs
Sedah P., Djedatin L. G., Loko L. Y. E., Ewedje Eebk, Orobiyi A., Gbemavo Cdsj, Toffa J., Tchakpa C., Cubry Philippe, Sabot François
Source
Rice, 2023,
16 (1), p. 48 [8 p.] ISSN 1939-8425
BackgroundRice 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.ResultsFor 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.ConclusionWe 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.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Sciences du monde végétal [076]
Description Géographique
BENIN
Localisation
Fonds IRD [F B010088595]
Identifiant IRD
fdi:010088595
