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CARACTERISATION PHENOTYPIQUE ET GENETIQUE DU RIZ AFRICAIN (ORYZA GLABERRIMA STEUD) PHENOTYPIC AND GENETIC CHARACTERIZATION OF AFRICAN RICE (ORYZA GLABERRIMA STEUD). [PDF]

International Journal of Advanced Research, 2018
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
Gnacadja, C., Berthouly-Salazar, C., Nourou Sall, S.N., Zekraoui, L., Sabot, François, Pegalepo, E., Manneh, B., Vieira-Dalode, G., Moreira, J., Soumanou, M.M., Azokpota, P., Sie, M.   +11 more
openaire   +3 more sources

Screening for salinity tolerance of Oryza glaberrima Steud. seedlings [PDF]

African Journal of Agricultural Research, 2018
Rice (Oryza sativa) is a salt-sensitive species and improvement of salt resistance is a major goal for plant breeders. Some species of Oryza genus may constitute an interesting source of genes involved in stress resistance for cultivated rice improvement. The African rice Oryza glaberrima is poorly described for its response to salt stress. Twenty-five
Prodjinoto, Hermann, Gandonou, Christophe, Lutts, Stanley   +2 more
openaire   +2 more sources

Differences in meristem size and expression of branching genes are associated with variation in panicle phenotype in wild and domesticated African rice

EvoDevo, 2017
Background The African rice Oryza glaberrima was domesticated from its wild relative Oryza barthii about 3000 years ago. During the domestication process, panicle complexity changed from a panicle with low complexity in O.
K. N. Ta, H. Adam, Y. M. Staedler, J. Schönenberger, T. Harrop, J. Tregear, N. V. Do, P. Gantet, A. Ghesquière, S. Jouannic   +9 more
doaj   +1 more source

Solving the mystery of Obake rice in Africa: population structure analyses of Oryza longistaminata reveal three genetic groups and evidence of both recent and ancient introgression with O. sativa

Frontiers in Plant Science, 2023
The undomesticated rice relative Oryza longistaminata is a valuable genetic resource for the improvement of the domesticated Asian rice, Oryza sativa. To facilitate the conservation, management, and use of O.
Marlee R. Labroo, Lindsay V. Clark, Shilai Zhang, Fengyi Hu, Dayun Tao, Ruaraidh Sackville Hamilton, Ruaraidh Sackville Hamilton, Erik J. Sacks   +7 more
doaj   +1 more source

Oryza sativa cv. Nipponbare and Oryza barthii as Unexpected Tolerance and Susceptibility Sources Against Schizotetranychus oryzae (Acari: Tetranychidae) Mite Infestation

Frontiers in Plant Science, 2021
Cultivated rice (Oryza sativa L.) is frequently exposed to multiple stresses, including Schizotetranychus oryzae mite infestation. Rice domestication has narrowed the genetic diversity of the species, leading to a wide susceptibility.
Giseli Buffon, Édina Aparecida dos Reis Blasi, Thainá Inês Lamb, Janete Mariza Adamski, Joséli Schwambach, Felipe Klein Ricachenevsky, Amanda Bertolazi, Vanildo Silveira, Mara Cristina Barbosa Lopes, Raul Antonio Sperotto, Raul Antonio Sperotto   +10 more
doaj   +1 more source

Processes underpinning development and maintenance of diversity in rice in West Africa: evidence from combining morphological and molecular markers.

PLoS ONE, 2014
We assessed the interplay of artificial and natural selection in rice adaptation in low-input farming systems in West Africa. Using 20 morphological traits and 176 molecular markers, 182 farmer varieties of rice (Oryza spp.) from 6 West African countries
Alfred Mokuwa, Edwin Nuijten, Florent Okry, Béla Teeken, Harro Maat, Paul Richards, Paul C Struik   +6 more
doaj   +1 more source

Allele mining unlocks the identification of RYMV resistance genes and alleles in African cultivated rice

BMC Plant Biology, 2020
Background Rice yellow mottle virus (RYMV) is a major rice pathogen in Africa. Three resistance genes, i.e. RYMV1, RYMV2 and RYMV3, have been previously described.
Hélène Pidon, Sophie Chéron, Alain Ghesquière, Laurence Albar   +3 more
doaj   +1 more source

Robustness and strategies of adaptation among farmer varieties of African Rice (Oryza glaberrima) and Asian Rice (Oryza sativa) across West Africa.

PLoS ONE, 2013
This study offers evidence of the robustness of farmer rice varieties (Oryza glaberrima and O. sativa) in West Africa. Our experiments in five West African countries showed that farmer varieties were tolerant of sub-optimal conditions, but employed a ...
Alfred Mokuwa, Edwin Nuijten, Florent Okry, Béla Teeken, Harro Maat, Paul Richards, Paul C Struik   +6 more
doaj   +1 more source

Genetic Variations in Dry Matter Production, Nitrogen Uptake, and Nitrogen Use Efficiency in the AA Genome Oryza Species Grown under Different Nitrogen Conditions

Plant Production Science, 2013
To clarify the genotypic variation of nitrogen (N) response in the AA genome Oryza species, we investigated dry matter production, N uptake, N and water use efficiencies (NUE and WUE), bleeding sap rate (BR), and root morphological traits at vegetative ...
Norimitsu Hamaoka, Yuri Uchida, Masayoshi Tomita, Etsushi Kumagai, Takuya Araki, Osamu Ueno   +5 more
doaj   +1 more source

Termometria infravermelha na fenotipagem para resistência à seca de linhagens inter e intraespecíficas de arroz Infrared thermometry for drought phenotyping of inter and intra specific upland rice lines

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
Propôs-se avaliar, no presente estudo, a técnica da termometria ao infravermelho na caracterização de linhagens interespecíficas (Oryza glaberrima x Oryza sativa cv Caiapó) e intraespecíficas de arroz para tolerância a seca.
Cleber M. Guimarães, Luís F. Stone, Mathias Lorieux, Jaison P. de Oliveira, Grasielli C. de O. Alencar, Rozângela A. A. Dias   +5 more
doaj   +1 more source