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Oryza brachyantha A. Chev. et Rhoer.

  • Distribution
  • Habitat
  • Spikelet


Genome designation
Chromosome number
Diploid, 2n=24
Tropical Africa ? Burkino Faso, Cameroon, Central Africa Republic, Chad, Guinea, Mali, Niger, Senegal, Sierra Leone, Sudan, Tanzania, Democratic Republic of Congo, Zambia
Key characteristics
Short (<1m), tufted annual or weakly perennial, slender culms, small, slender (<1.6m wide) spikelets with long awn (6-17cm). This species is similar in some characteristics to Leersia.
Open sites, laterite rock pools.
Potentially useful traits
Stem borer and leaffolder resistance has been reported. Should have tolerance to iron.
Smallest genome size of Oryza. Sometimes sympatric with O. barthii
Aggarwal, R. K., D. S. Brar, N. Huang, and G. S. Khush. 1996b. Molecular analysis of introgression in Oryza sativa/O.brachyantha and O.sativa/O.granulata derivatives. Int. Rice Res. Notes 21:2-3.
Lee, H.R., W. Zhang, T. Langdon, W. Jin, H. Yan, Z. Cheng and J. Jiang. 2005. Chromatin immunoprecipitation cloning reveals rapid evolutionary patterns of centromeric DNA in Oryza species. PNAS 102:11793-11798
Mullins, I. and K. Hilu. 2002. Sequence variation in the gene encoding the 10-kDa prolamin in Oryza (Poaceae) I. Phylogenetic implications. Theoretical and Applied Genetics 105:841-846
Ramachandran, R., Z.R. Khan. 1991. Mechanism of resistance in wild rice Oryza brachyantha to rice leaffolder Cnaphalocrocis medinalis (Guenee) (Lepidoptera: Pyralidae). Journal of Chemical Ecology 17(1):41-65