Reynoutria sachalinensis

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Reynoutria sachalinensis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Reynoutria
Species:
R. sachalinensis
Binomial name
Reynoutria sachalinensis
(F.Schmidt) Nakai
Synonyms[1]
  • Polygonum sachalinense F.Schmidt 1859
  • Fallopia sachalinensis Ronse Decr.
  • Reynoutria brachyphylla (Honda) Nakai
  • Tiniaria sachalinensis (F. Schmidt) Janch.

Reynoutria sachalinensis (giant knotweed or Sakhalin knotweed

Kurile Islands).[2]

Stem and inflorescence

Reynoutria sachalinensis is a

gynodioecious, with male and female (male sterile) flowers on separate plants. The species is closely related to the Japanese knotweed, Reynoutria japonica, and can be distinguished from it by its larger size, and in its leaves having a heart-shaped (not straight) base and a crenate margin. Reynoutria sachalinensis has a chromosome count of 2n=44.[3][4]

Cultivation and uses

Edible shoots

The

invasive weed in several areas.[6]

It has

Reynoutria × bohemica (Chrtek & Chrtková) J.P.Bailey, is frequently found in the British Isles and elsewhere.[3][7]

Extracts of this plant can be used as plant protectants for certain fungal and bacterial diseases.[8][9]

The species has been cultivated as an energy crop for biomass production, particularly in Germany in its commercial variety 'Igniscum', and it has shown a high productivity even in Northern latitudes, reaching a dry matter yield from 5.4 to 27.8 oven dry metric tons per hectare (2.4 to 12.4 short ton/acre), annually.[10]

References

Wikimedia Commons has media related to Reynoutria sachalinensis.
  1. ^ The Plant List, Reynoutria sachalinensis (F.Schmidt) Nakai
  2. ^ "Reynoutria sachalinensis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 1 January 2018.
  3. ^ a b Flora of NW Europe: Fallopia sachalinensis[permanent dead link]
  4. ISBN 0-333-47494-5.[page needed
    ]
  5. New International Encyclopedia. Yale University Press, 1926.[page needed
    ]
  6. ISBN 978-90-5103-097-6
    .
  7. ^ Japanese Knotweed Alliance: Fallopia hybrids Archived 2009-10-09 at the Wayback Machine
  8. ^ "Regalia Biofungicide chemical label" (PDF).
  9. ^ "Reynoutria sachalinensis (Giant Knotweed) (055809) Fact Sheet | Pesticides | US EPA". 2011-09-09. Archived from the original on 2011-09-09. Retrieved 2017-02-17.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  10. doi:10.1016/j.fuel.2021.121349
    .
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