Gnacadja C., Berthouly Cécile, Sall S.N., Zekraoui Leila , Sabot François, Pegalepo E., Manneh B., Vieira-Dalode G., Moreira J., Soumanou M.M., Azokpota P., Sie M. (2018). Caractérisation phénotypique et génétique du riz africain (Oryza glaberrima Steud). International Journal of Advanced Research, 6 (2), 1389-1398. ISSN 2320-5407.
Titre du document
Caractérisation phénotypique et génétique du riz africain (Oryza glaberrima Steud)
Année de publication
2018
Auteurs
Gnacadja C., Berthouly Cécile, Sall S.N., Zekraoui Leila , Sabot François, Pegalepo E., Manneh B., Vieira-Dalode G., Moreira J., Soumanou M.M., Azokpota P., Sie M.
Source
International Journal of Advanced Research, 2018,
6 (2), 1389-1398 ISSN 2320-5407
The agronomic interest of African rice and the morphological similarities with other species,arouse the necessity to characterize African rice for recovery and conservation. The present study aims primarily to characterize phenotypically and genetically African rice for better exploitation in aid of rice producers and consumers. Indeed, the phenotypic characteristics of the rice accessions examined have been determined in two agronomics systems (upland and irrigated) carried out about 235 accessions of African rice ; and afterwards, genetic characterization using a specific marker has been carried. At the end of the analyzes, with regard to the phenotypic characters, 22 O.sativa or interspecific accessions differing morphologically on several descriptors were identified. Genetically, out of 19 profiles revealed on a 935-bp band, 14 confirmed the phenotypic results. This study shows that 221 out of 235 accessions are O. glaberrimarice. These results show that the accessions of different species analyzed were confused during the collection. They also seems to validate the possibility of hybridization between the two rice species in peasant environment. The accessions characterized strengthen the conservation effort of African rice. This collection can be used for future studies, particularly with perspective to selection and running African rice with the possibility to establish a genetic model to facilitate the transfer of useful genes from O.glaberrimato O.sativa, while controlling the reproductive barrier. Thus, it will be easy to better exploit the genetic diversity of the African species of cultivated rice.
Plan de classement
Amélioration des plantes, ressources génétiques [076AMEPLA]
Localisation
Fonds IRD [F B010080161]
Identifiant IRD
fdi:010080161
