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5. Oryza nivara
Genome:- AA
Chromosome Number(2n):- 24
Distribution:-
Bangladesh, Cambodia, China, India, Laos, Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, and Vietnam.
Habitat:-
- Found in swampy areas, at edge of pond and tanks, beside streams, in ditches, in or around rice fields
- Grows in shallow water upto 0.3m, in seasonally dry and open habitats
Morphological character:-
- Annual, short to intermediate height grass
- Panicles usually compact, rarely open
- Spikelets large, 6 to 10.4mm long and 1.9 to 3.4mm wide, with 4 to 10cm long awn
- Anthers 1.5 to 3mm long
Specific traits:-
- Resistance to grassy stunt virus, Blast
Reference
- Rice Knowledge bank, IRRI
- Gramene database
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