Raphanus raphanistrum

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Raphanus raphanistrum
Raphanus raphanistrum - Deutschlands flora in abbildungen nach der natur - vol. 6 - t. 40 - clean.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Raphanus
Species:
R. raphanistrum
Binomial name
Raphanus raphanistrum
L.

Raphanus raphanistrum, also known as wild radish, white charlock or jointed charlock, [1] is a flowering plant in the family Brassicaceae. The species is native to western Asia, Europe and parts of Northern Africa. It has been introduced into most parts of the world and is regarded as a habitat threatening invasive species in many areas, for example, Australia. It spreads rapidly and is often found growing on roadsides or in other places where the ground has been disturbed. The cultivated radish, widely used as a root vegetable, is sometimes considered to be one of its subspecies as Raphanus raphanistrum subsp. sativus.

Contents

Description

The petals have a characteristic pattern of veins Raphanus raphanistrum petals.jpg
The petals have a characteristic pattern of veins

Wild radish is an annual that grows up to 75 cm tall, variously branched to multi-stemmed, with a distinct slender taproot which does not swell like that of the cultivated radish. The stems are green and sometimes purple at the base and nodes, round in cross section and slightly ridged, and bristly-hairy all over. It has a basal rosette of pinnate leaves to 38 cm long, with a 3 cm stalk (petiole) and a large rounded terminal lobe that has a undulate margin; the lateral lobes sometimes overlap the midrib. The stem leaves become progressively less lobed as they ascend, and more acutely serrated. Both the upper and lower surface of each leaf is roughly hairy, as are the leaf margins, which have minutely bulbous-based hairs projecting horizontally. The leaves have green or purple tips (hydathodes) on each tooth. [2] [3] [4]

The basal leaves are often pinnately divided. Raphanus raphanistrum leaves.jpg
The basal leaves are often pinnately divided.
Habit (MHNT) Raphanus raphanistrum - Habitus.jpg
Habit

The flowering period is between May and October in northern Europe, or between June and August in Minnesota. [5] The inflorescence is a lax raceme, terminal or arising from the leaf axil, up to 34 cm long with up to 42 flowers. The flowers have four white (sometimes yellow or purple) petals, up to 24 mm long, sometimes with dark veins (especially on the underside). Each petal has a rounded "limb" above a narrow "claw", both about the same length. The four upright sepals are shorter than the petals, green or purple, and have sparse bulbous-based hairs. There are 6 stamens (2 short and 4 long) and one style with two stigmas. [2]

The fruits are borne on bristly-hairy pedicels about 3 cm long and held vertically (whether the rhachis is erect or sprawling). Each fruit consists of a pod with two segments: the lower one is about 1-2 mm long and sterile (just occasionally with one seed), while the upper one is up to 8 cm long and has 1-10 fertile segments (mericarps), each containing one oval seed up to 3 mm long. At the tip of the pod is a sterile beak up to 2.5 cm long. The fruits are terete, smooth or slightly ridged, and glabrous to roughly hairy, with a peppery taste. At the tip of the beak is the persistent, sessile white stigma. [3] [2] [6]

Taxonomy

It was formally described by the Swedish botanist Carl Linnaeus in his seminal publication 'Species Plantarum' on page 669 in 1753. [7] [8] [9]

The genome of wild radish is estimated to be ~515 Mb in size, [10] whereas that of the edible variety is suggested to be ~539–574 Mb. [11] [12] [13] Several Raphanus raphanistrum genomes have been sequenced, [10] [12] [13] with one study reporting 98% coverage of the gene space. [13] Researchers found evidence that the past whole-genome triplication that occurred before the divergence of Raphanus and Brassica has been followed by widespread gene loss in radish, resulting in the loss of ~38,000 genes from the wild radish genome. [10]

Raphanus raphanistrum has several known subspecies including:

The scientific name Raphanus derives from the Ancient Greek name for a radish, ραφανίς (raphanis). [17] It has several common names including jointed charlock, [5] jointed radish, jointed wild radish, white charlock, [18] and wild radish. [9] [19]

It is often erroneously identified as mustard.

Identification

The flowers are very similar to those of the searocket, which is found in some of the same regions (in the US) and is easily distinguished from it by having thinner, non-succulent stems and leaves. [18]

Distribution and habitat

It is native to temperate regions of North Africa, Europe and parts of Western Asia. [9]

Range

It is found in North Africa, within Macaronesia, Madeira Islands, Canary Islands, Algeria, Egypt, Libya, Morocco and Tunisia. Within Western Asia it is found in the Caucasus, Armenia, Azerbaijan, Cyprus, Georgia, Iran, Iraq, Israel, Jordan, Lebanon, Syria and Turkey. In eastern Europe, it is found within Belarus, Moldova and Ukraine. In middle Europe, it is in Austria, Belgium, Czech Republic, Germany, Hungary, Netherlands, Poland, Slovakia and Switzerland. In northern Europe, in Denmark, Estonia, Finland, Ireland, Isle of Man, Latvia, Lithuania, Norway, Sweden and United Kingdom. In southeastern Europe, within Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Italy, Montenegro, North Macedonia, Romania, Serbia and Slovenia. Also in southwestern Europe, it is found in France, Portugal and Spain. [9]

Ecology

Wild radish in a cereal field margin Raphanus raphanistrum habitat.jpg
Wild radish in a cereal field margin

It is frost hardy, and even hard freezes only temporarily interrupt bloom. In Australia, it is regarded as a habitat threatening invasive species in many areas. [20] [21] [22] In Canada, it is a naturalised species and sometimes hybridizes with cultivated radish, R. sativus. It has also proved to be resistant to several herbicides. [23]

In southeastern USA, the pale yellow form is common, sometimes entirely taking over fields in wintertime. It is a significant source of pollen and nectar for a variety of pollinators, especially honey bees during the very early spring starting buildup. Female Andrena agilissima , or mining bees, frequent this plant to obtain pollen and nectar. [24] Other pollinators include cabbage butterflies and a few syrphid fly species. [25]

Uses

All tender parts of the plant are edible. The leaves and flowers have a spicy taste or aftertaste. The seedpods can be eaten, as can the outer skin of the root (after being washed). [26] It is said that John Walker cultivated sea radish root as an alternative to horseradish after discovering the plant on the west coast of Scotland as early as 1753. [27]

Related Research Articles

<span class="mw-page-title-main">Brassicaceae</span> Family of flowering plants

Brassicaceae or Cruciferae is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple, lack stipules, and appear alternately on stems or in rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall.

<i>Brassica</i> Genus of flowering plants in the cabbage family Brassicaceae

Brassica is a genus of plants in the cabbage and mustard family (Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, mustard plants, or simply brassicas. Crops from this genus are sometimes called cole crops—derived from the Latin caulis, denoting the stem or stalk of a plant.

<span class="mw-page-title-main">Radish</span> Root vegetable of the family Brassicaceae

The radish is a flowering plant in the mustard family, Brassicaceae. Its large taproot is commonly used as a root vegetable, although the entire plant is edible and its leaves are sometimes used as a leaf vegetable. Originally domesticated in Asia, radishes are now grown and consumed throughout the world. The radish is sometimes considered to form a species complex with the wild radish, and instead given the trinomial name Raphanus raphanistrum subsp. sativus.

<i>Beta vulgaris</i> Species of flowering plant

Beta vulgaris (beet) is a species of flowering plant in the subfamily Betoideae of the family Amaranthaceae. Economically, it is the most important crop of the large order Caryophyllales. It has several cultivar groups: the sugar beet, of greatest importance to produce table sugar; the root vegetable known as the beetroot or garden beet; the leaf vegetable known as chard or spinach beet or silverbeet; and mangelwurzel, which is a fodder crop. Three subspecies are typically recognised. All cultivars, despite their quite different morphologies, fall into the subspecies Beta vulgaris subsp. vulgaris. The wild ancestor of the cultivated beets is the sea beet.

<i>Daucus carota</i> Species of flowering plant

Daucus carota, whose common names include wild carrot, European wild carrot, bird's nest, bishop's lace, and Queen Anne's lace, is a flowering plant in the family Apiaceae. It is native to temperate regions of the Old World and was naturalized in the New World.

<i>Molinia caerulea</i> Species of grass

Molinia caerulea, known by the common name purple moor-grass, is a species of grass that is native to Europe, west Asia, and north Africa. It grows in locations from the lowlands up to 2,300 m (7,546 ft) in the Alps. Like most grasses, it grows best in acid soils, ideally pH values of between 3.5 and 5, however, it can continue to live under more extreme conditions, sometimes to as low as 2. It is common on moist heathland, bogs and moorland throughout Great Britain and Ireland. Introduced populations exist in northeastern and northwestern North America.

<i>Fragaria virginiana</i> Species of strawberry

Fragaria virginiana, known as Virginia strawberry, wild strawberry, common strawberry, or mountain strawberry, is a North American strawberry that grows across much of the United States and southern Canada. It is one of the two species of wild strawberry that were hybridized to create the modern domesticated garden strawberry.

<i>Raphanus</i> Genus of flowering plants

Raphanus is a genus within the flowering plant family Brassicaceae.

<i>Crocus sativus</i> Species of flowering plant

Crocus sativus, commonly known as saffron crocus or autumn crocus, is a species of flowering plant in the iris family Iridaceae. A cormous autumn-flowering cultivated perennial, unknown in the wild, it is best known for the culinary use of its floral stigmas as the spice saffron. Human cultivation of saffron crocus and the trade and use of saffron have endured for more than 3,500 years and span different cultures, continents, and civilizations.

Sativus is a Latin word meaning cultivated.

<span class="mw-page-title-main">Carrot</span> Root vegetable

The carrot is a root vegetable, typically orange in colour, though heirloom variants including purple, black, red, white, and yellow cultivars exist, all of which are domesticated forms of the wild carrot, Daucus carota, native to Europe and Southwestern Asia. The plant probably originated in Iran and was originally cultivated for its leaves and seeds.

<i>Rhamphospermum arvense</i> Species of plant

Rhamphospermum arvense, the charlock mustard, field mustard, wild mustard, or just charlock, is an annual or winter annual plant in the family Brassicaceae. It is found in the fields of North Africa, Asia, Europe, and some other areas where it has been transported and naturalized. Pieris rapae, the small white butterfly, and Pieris napi, the green veined white butterfly, are significant consumers of charlock during their larval stages.

<i>Draba verna</i> Species of flowering plant

Draba verna, common whitlowgrass, is a species of plant in the cabbage family. It is a small spring-flowering annual which is widely dispersed around the world, and which is found on walls, pavements and patches of bare ground. It has a complex taxonomy which is not yet fully elucidated.

<i>Campanula rapunculus</i> Species of flowering plant

Campanula rapunculus, common name rampion bellflower, rampion, rover bellflower, or rapunzel, is a species of bellflower (Campanula) in the family Campanulaceae.

<i>Diplotaxis tenuifolia</i> Species of flowering plant

Diplotaxis tenuifolia is a species of flowering plant in the mustard family known by the common name perennial wall-rocket. It is native to Europe and western Asia, where it grows on disturbed ground and roadsides, and it can now be found throughout much of the temperate world where it has naturalized. In recent years it has increasingly been cultivated to produce salad leaves, which are marketed as wild rocket in Britain or arugula in the US. It is easily confused with garden rocket, which has similar uses.

<i>Andrena agilissima</i> Species of bee

Andrena agilissima is a species of mining bee. They are present in most of Europe, the Near East and North Africa and can be found from April through July. Andrena agilissima is an oligolectic species, feeding only on the pollen of a few genera of Cruciferous vegetables.

<span class="mw-page-title-main">Japanese radish</span> Japanese vegetable

Daikon is a generic term for radish in Japanese language. For example, European radish is called hatsukadaikon (廿日大根) in Japan. In the West, the word daikon sometimes refers to long white Asian radish varieties and sometimes Japanese radish varieties. When it is necessary to distinguish the usual Japanese form from others, it is sometimes known as Japanese radish or "true daikon".

Iris dolichosiphon is a plant species in the genus Iris, it is also in the subgenus Iris and in the section Pseudoregelia. It is a rhizomatous perennial, from China and Bhutan. It has long, thin dark green leaves, very short stem, and dark blue, purple, or violet flowers. That are mottled with white. It has thick white/orange beards. It has one subspecies, Iris dolichosiphon subsp. orientalis, from China, India and Burma. It has similar flowers. They are cultivated as ornamental plants in temperate regions

<span class="mw-page-title-main">Black radish</span> Species of flowering plant

The black radish, a cultivated variety of the radish, is a root vegetable of the family Brassicaceae and is a variety of winter radish. It is also called black Spanish radish or Erfurter radish.

The agricultural weed syndrome is the set of common traits which make a plant a successful agricultural weed. Most of these traits are not, themselves, phenotypes but are instead methods of rapid adaptation. So equipped, plants of various origins - invasives, natives, mildly successful marginal weeds of agriculture, weeds of other settings - accumulate other characteristics which allow them to compete in an environment with a high degree of human management.

References

  1. ↑ "Raphanus raphanistrum". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture.
  2. 1 2 3 Stace, C.A. (2019). New Flora of the British Isles. Suffolk. ISBN   978-1-5272-2630-2.{{cite book}}: CS1 maint: location missing publisher (link)
  3. 1 2 Rich, T.C.G. (1991). Crucifers of Great Britain and Ireland. London: Botanical Society of the British Isles. ISBN   0901158208.
  4. ↑ Poland, John; Clement, Eric (2009). The Vegetative Key to the British Flora. Southampton: John Poland. ISBN   978-0-9560144-0-5.
  5. 1 2 "Raphanus raphanistrum (Jointed Charlock)". Minnesota Wildflowers. Retrieved 8 November 2017.
  6. ↑ Rose, Francis (2006). The Wild Flower Key. London: Frederick Warne. ISBN   978-0-7232-5175-0.
  7. ↑ "Brassicaceae Raphanus raphanistrum L." ipni.org. Retrieved 8 November 2017.
  8. 1 2 "Raphanus raphanistrum L. is an accepted name". 23 March 2012. plantlist.org. Retrieved 8 November 2017.
  9. 1 2 3 4 "Taxon: Raphanus raphanistrum L." ars-grin.gov. Retrieved 8 November 2017.
  10. 1 2 3 Moghe, Gaurav (May 2014). "Consequences of Whole-Genome Triplication as Revealed by Comparative Genomic Analyses of the Wild Radish Raphanus raphanistrum and Three Other Brassicaceae Species". The Plant Cell. 26 (5): 1925–1937. doi:10.1105/tpc.114.124297. PMC   4079359 . PMID   24876251.
  11. ↑ Johnston, J. Spencer; et al. (2005). "Evolution of Genome Size in Brassicaceae". Annals of Botany. 95 (1): 229–235. doi:10.1093/aob/mci016. PMC   1950721 . PMID   15596470.
  12. 1 2 Mitsui, Yuki; et al. (2015). "The radish genome and comprehensive gene expression profile of tuberous root formation and development". Scientific Reports. 5: 10835. Bibcode:2015NatSR...510835M. doi:10.1038/srep10835. PMC   4650646 . PMID   26056784.
  13. 1 2 3 Jeong, Young-Min; et al. (2016). "Elucidating the triplicated ancestral genome structure of radish based on chromosome-level comparison with the Brassica genomes". Theoretical and Applied Genetics. 129 (7): 1357–1372. doi:10.1007/s00122-016-2708-0. PMID   27038817. S2CID   5764946.
  14. ↑ "Tropicos.org Missouri Botanical Garden" . Retrieved 4 July 2021.
  15. ↑ "Tropicos.org Missouri Botanical Garden" . Retrieved 4 July 2021.
  16. ↑ "Tropicos.org Missouri Botanical Garden" . Retrieved 4 July 2021.
  17. ↑ Morwood, J.; Taylor, J. (2002). Pocket Oxford Classical Greek Dictionary. Oxford: Oxford University Press. ISBN   0-19-860512-9.
  18. 1 2 Reader's Digest Field Guide to the Wild Flowers of Britain. Reader's Digest. 1981. p. 40. ISBN   9780276002175.
  19. ↑ USDA, NRCS (n.d.). "​Raphanus raphanistrum​". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 18 October 2015.
  20. ↑ Peltzer, Sally. "Wild radish". Western Australia Department of Agriculture and Food. Retrieved 10 November 2015.
  21. ↑ Western Australian Herbarium, Biodiversity and Conservation Science. "Raphanus raphanistrum (FloraBase—the Western Australian Flora)". florabase.dpaw.wa.gov.au. Retrieved 2020-03-20.
  22. ↑ "Raphanus raphanistrum L." www.gbif.org. Retrieved 2020-03-20.
  23. ↑ Warwick, Suzanne I.; Francis, Ardath (3 February 2005). "The biology of Canadian weeds. 132. Raphanus raphanistrum. L." Canadian Journal of Plant Science. 85 (3). Eastern Cereal and Oilseed Research Centre: 709–733. doi: 10.4141/P04-120 .
  24. ↑ Giovanetti, Manuela; Lasso, Eloisa (July–September 2005). "Body size, loading capacity and rate of reproduction in the communal bee Andrena agilissima (Hymenoptera; Andrenidae)". Apidologie. 36 (3): 439–447. doi: 10.1051/apido:2005028 .
  25. ↑ Koelling, Vanessa A.; Karoly, Keith (May 2007). "Self-pollen interference is absent in wild radish (Raphanus raphanistrum, Brassicaceae), a species with sporophytic self-incompatibility". Am. J. Bot. 94 (5): 896–900. doi:10.3732/ajb.94.5.896. hdl: 1808/10342 . PMID   21636458.
  26. ↑ Nyerges, Christopher (2017). Foraging Washington: Finding, Identifying, and Preparing Edible Wild Foods. Guilford, CT: Falcon Guides. ISBN   978-1-4930-2534-3. OCLC   965922681.
  27. ↑ Sowerby, James; Smith, James Edward (1806). English Botany: or, Coloured Figures of British Plants (First ed.).
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