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Oryza officinalis Wall. ex Watt

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provided by eFloras
The name Oryza latifolia Desvaux has sometimes been misapplied to this species in Asian literature.

Oryza officinalis is normally diploid, with the genome CC. It is closely related to the tetraploid O. minuta Presl from the Philippines (genome BBCC), and is sometimes placed as O. minuta var. silvatica. Oryza minuta differs only slightly morphologically, the lowermost panicle branches having a shorter naked portion and ascending at the tip. It also has proportionately narrower spikelets with length 2–2.7 × width.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 22: 182, 183 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Description

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Perennial. Culms erect or creeping and rooting at lower nodes, 1.5–3 m tall, 7–10 mm in diam. Leaf sheaths more than 3 times internode length, auricles inconspicuous; leaf blades thick, 30–50 × 2–3 cm, abaxial surface and margins scabrous, adaxial surface scattered villous, midrib stout, lateral veins inconspicuous, base narrowed, puberulous, apex acuminate; ligule 1–4 mm. Panicle loosely contracted, 30–50 cm, base often included in terminal sheath; branches 3–5 at lowest node, axils bearded, longest 10–25 cm, naked in lower half, apices of lowermost branches drooping. Spikelets broadly ovate-oblong, 4–5 mm, length 1.5–2 times width, yellowish green or tinged brownish black, deciduous; sterile lemmas linear-lanceolate, 1.5–2 mm, apex acuminate; fertile lemma papillose, keel and marginal veins with hard glassy hairs; awn 5–10(–25) mm, slender, scabrid. Anthers 1.5–2.5 mm. Caryopsis reddish brown, ca. 3 × 2 mm. 2n = 24.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 22: 182, 183 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Distribution

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Guangdong, Guangxi, Hainan, Yunnan [Bhutan, Cambodia, India, Indonesia, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam].
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 22: 182, 183 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Habitat

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Low hills, alluvial plains, ditch banks; below 1000 m.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 22: 182, 183 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Synonym

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Oryza latifolia Desvaux var. silvatica Camus; O. minuta Presl var. silvatica (Camus) Veldkamp.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 22: 182, 183 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Oryza officinalis

provided by wikipedia EN

Oryza officinalis is species of flowering plant in the genus Oryza (rice) native to India, Nepal, the eastern Himalaya, southeast Asia, south-central and southeast China, Hainan, the Philippines, New Guinea, and the Northern Territory and Queensland in Australia.[2] A perennial diploid with the CC rice genome, it can reach 3 m (10 ft) in height.[3] It is the namesake of a widespread species complex.[4]

Pests

O. officinalis in Sukhothai Province, Thailand was reported in 1990 to be highly resistant to tungro and various other pests, and already in use in several cultivars.[IRRI 1][Bon 1]

References

  1. ^ Dict. Econ. Prod. India 5: 501 (1891)
  2. ^ a b "Oryza officinalis Wall. ex Watt". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 16 November 2020.
  3. ^ "药用稻 yao yong dao". Flora of China. efloras.org. Retrieved 16 November 2020.
  4. ^ Kurata, Nori; Sato, Yutaka; Nonomura, Ken-Ichi; Yano, Kentaro; Wing, Rod; Kudrna, David; Kubo, Takahiko; Miyabayashi, Toshie; Furuumi, Hiroyasu; Fujiyama, Asao; Ikawa, Hiroshi; Toyoda, Atsushi; Fujita, Masahiro; Ohmido, Nobuko; Zhang, Jianwei; Hernández-Hernández, Tania; Copetti, Dario; Ohyanagi, Hajime; Terashima, Shin; Kobayashi, Masaaki; Shenton, Matt (2020). "Evolution and diversity of the wild rice Oryza officinalis complex, across continents genome types, and ploidy levels". Genome Biology and Evolution. 12 (4): 413–428. doi:10.1093/gbe/evaa037. PMC 7531200. PMID 32125373.
  1. ^ p. 53, "Oryza officinalis from Sukothai, Thailand, is a good source of resistance to several pests and diseases; it has been used in a number of crosses to derive high-yielding lines with multiple pest resistance."
  1. ^ p. 520, "An accession of O. officinalis from Thailand showed high resistance to RTD (62), although it is not yet known whether this resistance is due to resistance to the vector, to the viruses themselves, or to some combination of these resistances. Results from recent research indicate that resistance to RTD is present in many wild rice species (R. Ikeda, personal communication), and perhaps some will show resistance to RTBV."
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Oryza officinalis: Brief Summary

provided by wikipedia EN

Oryza officinalis is species of flowering plant in the genus Oryza (rice) native to India, Nepal, the eastern Himalaya, southeast Asia, south-central and southeast China, Hainan, the Philippines, New Guinea, and the Northern Territory and Queensland in Australia. A perennial diploid with the CC rice genome, it can reach 3 m (10 ft) in height. It is the namesake of a widespread species complex.

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