Living Beings
    Source-identified Oryza sativa; Source-identified documentary image; see the original file for method and context. Framed for display
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    Oryza sativa (Asian rice)- Root.jpg · Resized and converted to WebP for display. Source-identified documentary image; see the original file for method and context. Debdas Gain · CC BY-SA 4.0

    Field guide · species

    Asian Rice

    Oryza sativa L., 1753

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    ViridiplantaeMagnoliopsidaPoalesPoaceae

    Asian rice is an annual grass cultivated for its grains. It grows as a clump of shoots and produces a branching flowering head, with many cultivated forms adapted to different water and seasonal regimes.

    Public research profile · final editorial review pending.

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    Tree of lifeScientific lineage
    1. LifeLife
    2. DomainEukaryota
    3. KingdomViridiplantae
    4. PhylumStreptophyta
    5. ClassMagnoliopsida
    6. OrderPoales
    7. FamilyPoaceae
    8. GenusOryza
    9. SpeciesOryza sativa
    Advanced classification

    Complete source lineage, including intermediate ranks. The standard view uses Life and the eight principal ranks.

    1. cellular organisms cellular root
    2. Eukaryota domain
    3. Viridiplantae kingdom
    4. Streptophyta phylum
    5. Streptophytina subphylum
    6. Embryophyta clade
    7. Tracheophyta clade
    8. Euphyllophyta clade
    9. Spermatophyta clade
    10. Magnoliopsida class
    11. Mesangiospermae clade
    12. Liliopsida clade
    13. Petrosaviidae subclass
    14. commelinids clade
    15. Poales order
    16. Poaceae family
    17. BOP clade clade
    18. Oryzoideae subfamily
    19. Oryzeae tribe
    20. Oryzinae subtribe
    21. Oryza genus
    22. Oryza sativa species
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    Structure and identification

    Narrow leaves arise from tillers. Small flowers develop in a branched panicle, followed by grains enclosed by husks.

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    Habitat and range

    Many rice systems use wet or flooded ground, but cultivation methods and water requirements vary among varieties.

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    Nutrition and metabolism

    Photosynthesis supports vegetative growth and grain filling. The seed endosperm stores carbohydrates used by a germinating seedling.

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    Biological activity

    Tillering increases shoot number, while flowering and grain maturation depend on cultivar and growing conditions.

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    Reproduction and life cycle

    Plants grow from seed, flower and produce a new grain crop. The normal cultivated cycle is annual.

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    Geographic distribution

    The species is cultivated throughout many warm regions. Its distribution reflects domestication and agricultural movement rather than a simple wild range.

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    Ecological role

    Rice fields form managed ecosystems with aquatic and terrestrial organisms whose composition depends on farming practice.

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    Distinctive adaptations

    Cultivated diversity includes contrasting responses to water availability and seasonal timing.

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    Conservation

    Maintaining crop genetic diversity and wild relatives is an important conservation task; Oryza glaberrima is a different cultivated rice species.

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    Evidence

    Sources

    Connected life

    No reviewed ecological connections in the collection yet.

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