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Oryza australiensis Domin
Distribution
Spikelet
Spikelet
Inflorescence
Habitat
Habitat
Habitat
Habitat
Explanations
- Genome designation
- EE
- Chromosome number
- Diploid, 2n=12
- Distribution
- Tropical Australia
- Key characteristics
- Tall (>2m), erect herb with grey-green leaves, pear-shaped spikelet with flexuous awn and scabrous panicle axis. Perennial (rhizomatous) and annual (non-rhizaomatous) reported.
- Habitat
- Found in open habitats beside lagoons, streams or lakes. When sympatric with A-genome Oryza usually at higher elevations at the site. Grows in red loam and clay soils.
- Potentially useful traits
- Pest resistance, drought tolerance.
- Notes
- This species has the largest diploid genome size among Oryza species. Intra specific variation is little studied.
- References
- Piegu, B., R. Guyot, N. Picault, A. Roulin, A. Saniyal, H. Kim, K. Collura, D.S. Brar, S. Jackson, R.A. Wing, O. Panaud. 2006. Doubling genome size without polyploidization: Dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice. Genome Research 16:1262-1269
- Multani, D. S., K. K. Jena, D. S. Brar, B. C. de los Reyes, E. R. Angeles, and G. S. Khush. 1994. Development of monosomic alien addition lines and introgression of genes from O. australiensis Domin. to cultivated rice, O. sativa L. Theor. Appl. Genet. 88:102-109.
- Noma, K., R. Nakajima, H. Ohtsubo, and E. Ohtsubo. 1997. RIRE1, a retrotransposon from wild rice, Oryza australiensis. Genes Genet. Syst. 72:131-140.
