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词条 Thlaspi arvense
释义

  1. Description

  2. Taxonomy

  3. Distribution

  4. Ecology

  5. Edible uses

  6. Use as a source of biodiesel

  7. Research

  8. References

{{Taxobox
| image = Thlaspi arvense.jpeg
| regnum = Plantae
| unranked_divisio = Angiosperms
| unranked_classis = Eudicots
| unranked_ordo = Rosids
| ordo = Brassicales
| familia = Brassicaceae
| genus = Thlaspi
| species = T. arvense
| binomial = Thlaspi arvense
| binomial_authority = L.
}}

Thlaspi arvense, known by the common name field pennycress,[1] is a flowering plant in the cabbage family Brassicaceae.

Description

A foetid, hairless annual plant, growing up to {{convert|60|cm|abbr=on}} tall,[2]{{rp|421}} with upright branches. The stem leaves are arrow-shaped, narrow and toothed. It blooms between May and July, with clusters of small white flowers. They have 4 sepals and 4 longer petals.[2] Later it has round, flat, winged pods with a deep apical notch,[3]{{rp|421}} measuring {{convert|1|-|1|cm|abbr=on}}across. They contain small brown-black seeds.[2]

Taxonomy

The common name 'penny cress' is derived from the shape of the seeds looking like an old English penny.[2]

Distribution

It is native to temperate regions of Eurasia, but is a naturalized introduced species throughout temperate North America and therefore has a circumpolar distribution. In the British Isles it is regarded as an archaeophyte (an ancient introduction).[4]

Ecology

Field pennycress is a weed of cultivated land and wasteland.[4]

Edible uses

The field pennycress has a bitter taste; it is usually parboiled to remove the bitter taste. This is mostly used in salads, sometimes in sandwich spreads. It is said to have a distinctive flavour.[5]

Use as a source of biodiesel

Pennycress is being developed as an oilseed crop for production of renewable fuels.[6][7] The species can be planted in the fall, will germinate and form a vegetative mass which can overwinter. In the spring, the oil-rich seed can be harvested and used as a biodiesel feedstock.

Research

Pennycress is related to the model plant species Arabidopsis thaliana. Researchers have begun studying the genetics of pennycress in order to improve its potential use as a biofuel crop. For example, the transcriptome of pennycress has been sequenced.[8]

References

1. ^{{PLANTS|id=THAR5|taxon=Thlaspi arvensis|accessdate=9 December 2015}}
2. ^{{cite book |year=1981 |title=Reader's Digest Field Guide to the Wild Flowers of Britain |page=53 |publisher=Reader's Digest |isbn=9780276002175}}
3. ^{{cite book|last=Stace|first=C. A.|authorlink = Stace, C. A.|year=2010|title=New Flora of the British Isles|edition=Third|publisher=Cambridge University Press|location = Cambridge, U.K.| isbn=9780521707725}}
4. ^{{cite web |title= Online Atlas of the British & Irish flora: Thlaspi arvense, Field pennycress |url=http://www.brc.ac.uk/plantatlas/index.php?q=node/412 |publisher=Biological Records Centre and Botanical Society of Britain and Ireland |location=London, U.K. |accessdate=29 May 2016 }}
5. ^{{cite web|title=Field Pennycress Thlaspi arvense|url=http://www.ediblewildfood.com/field-pennycress.aspx|publisher=ediblewildfood.com|accessdate=1 December 2017}}
6. ^Arvegenix LLC website
7. ^Field pennycress shows feedstock potential
8. ^De novo assembly of the pennycress (Thlaspi arvense) transcriptome provides tools for the development of a winter cover crop and biodiesel feedstock. Kevin M. Dorn, Johnathon D. Fankhauser, Donald L. Wyse, M. David Marks. The Plant Journal. {{doi|10.1111/tpj.12267}}
{{Taxonbar|from=Q161867}}

22 : Brassicaceae|Flora of France|Flora of Afghanistan|Flora of Armenia|Flora of Azerbaijan|Flora of Denmark|Flora of Estonia|Flora of Germany|Flora of Greece|Flora of Iran|Flora of Ireland|Flora of Italy|Flora of Latvia|Flora of Lithuania|Flora of North Macedonia|Flora of Norway|Flora of Pakistan|Flora of Portugal|Flora of Spain|Flora of Turkey|Flora of Great Britain|Plants described in 1753

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