The tree onion (Allium × proliferum) is a perennial plant similar to the common onion (A. cepa), but with a cluster of bulblets where a normal onion would have flowers. Tree onions are also known as topsetting onions, walking onions, or Egyptian onions. Genomic evidence has conclusively shown that they are a diploid hybrid of the shallot and the Welsh onion (A. fistulosum).[2][3][4] However, some sources may still treat the tree onion as A. cepa var. proliferum or A. cepa Proliferum Group.
Tree onion
Onion stalks with bulblets, or miniature onions grown at the top of the stalk.
Tree onion bulblets will sprout and grow while still on the original stalk. The bulblets are usually marble-sized, between 0.5 cm to 3 cm in diameter. They may bend down under the weight of the new growth and take root some distance from the parent plant, giving rise to the name "walking onion". It has been postulated that the name "Egyptian onion" derived from Romani people[5] bringing tree onions to Europe from the Indian subcontinent. The phenomenon of forming bulblets (bulbils) instead of flowers is also seen in top-setting garlic and other alliums, which sometimes may also be referred to as top onions or tree onions.[6]
Also known as turfed stone leek, it may be cultivated commercially and for foliage.[7][8] It is described as a shallot which can be grown in tropical conditions.[9]
Many tree onions are very strong flavoured, although some cultivars are relatively mild and sweet.[5] The underground bulbs are particularly tough-skinned and pungent,[10] and can be quite elongate, like leeks,[10] or in some types may form bulbs up to 5 cm across.[5] Young plants may be used as scallions in the spring, and the bulblets may be used in cooking similarly to regular onions, or preserved by pickling.[10]
The plant is known as wakegi (ワケギ) "split scallion" in Japan. Considered a specialty of the Hiroshima Prefecture, it is used in local cooking similar to other scallions.[11]
In Korea, Allium × proliferum along with A. fistulosum is called pa (파, "scallion"), while common onions are called yangpa (양파, "Western scallion"). While A. × proliferum is called jjokpa (쪽파, "separated scallion"), A. fistulosum is called either daepa (대파, "big scallion") or silpa (실파, "thread scallion") depending on the size. Unlike daepa and silpa, which are usually used as a spice, herb, or garnish, jjokpa is often used as the main ingredient of various scallion dishes in Korean cuisine. Common dishes made with jjokpa include pajeon (scallion pancakes) and pa-kimchi (scallion kimchi).[citation needed]
^Friesen, N. & M. Klaas (1998). "Origin of some vegetatively propagated Allium crops studied with RAPD and GISH". Genetic Resources and Crop Evolution. 45 (6): 511–523. doi:10.1023/A:1008647700251. S2CID 26205471.
^Yamashita, Kenichiro; Tashiro, Yosuke (2001). "RFLP Analysis of Mitochondrial DNA in Wakegi Onion". Engei Gakkai Zasshi. 70 (2): 232–234. doi:10.2503/jjshs.70.232.
^James L. Brewster (1 January 2008). Onions and Other Vegetable Alliums. CABI. pp. 152–3. ISBN978-1-84593-622-8.
^ abcRuttle, Jack. "Confessions of an Onion Addict". National Gardening Association. Retrieved 17 February 2011.
^"Allium | Piedmont Master Gardeners". A few alliums, such as A. roseum and A. sphaerocephalon produce aerial bulbils in the flower head.
^Haim D. Rabinowitch; Lesley Currah (2002). Allium Crop Science: Recent Advances. CABI. pp. 87–8. ISBN978-0-85199-510-6.
^Vincent E. Rubatzky; Mas Yamaguchi (6 December 2012). World Vegetables: Principles, Production, and Nutritive Values. Springer Science & Business Media. pp. 307–8. ISBN978-1-4615-6015-9.
^Jaime Prohens-Tomás; Fernando Nuez (6 December 2007). Vegetables II: Fabaceae, Liliaceae, Solanaceae, and Umbelliferae. Springer Science & Business Media. pp. 124, 152. ISBN978-0-387-74110-9.
^ abcChandoha, Walter. "Egyptian Onions are the Easiest" (PDF). Cornell University Cooperative Extension. Retrieved 26 April 2011.
^"わけぎの需給動向". 独立行政法人農畜産業振興機構. Retrieved 11 March 2022.
April 11, 2024
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The tree onion Allium proliferum is a perennial plant similar to the common onion A cepa but with a cluster of bulblets where a normal onion would have flowers Tree onions are also known as topsetting onions walking onions or Egyptian onions Genomic evidence has conclusively shown that they are a diploid hybrid of the shallot and the Welsh onion A fistulosum 2 3 4 However some sources may still treat the tree onion as A cepa var proliferum or A cepa Proliferum Group Tree onionOnion stalks with bulblets or miniature onions grown at the top of the stalk Scientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade MonocotsOrder AsparagalesFamily AmaryllidaceaeSubfamily AllioideaeGenus AlliumSpecies A proliferumBinomial nameAllium proliferum Moench Schrad ex Willd Synonyms 1 Allium cepa var proliferum Moench RegelAllium fistulosum var viviparum MakinoAllium fistulosum f viviparum Makino M HiroeAllium multitabulatum S CicinaAllium multitabulatum S CicinaAllium wakegi ArakiCepa prolifera MoenchTree onion bulblets will sprout and grow while still on the original stalk The bulblets are usually marble sized between 0 5 cm to 3 cm in diameter They may bend down under the weight of the new growth and take root some distance from the parent plant giving rise to the name walking onion It has been postulated that the name Egyptian onion derived from Romani people 5 bringing tree onions to Europe from the Indian subcontinent The phenomenon of forming bulblets bulbils instead of flowers is also seen in top setting garlic and other alliums which sometimes may also be referred to as top onions or tree onions 6 Also known as turfed stone leek it may be cultivated commercially and for foliage 7 8 It is described as a shallot which can be grown in tropical conditions 9 Many tree onions are very strong flavoured although some cultivars are relatively mild and sweet 5 The underground bulbs are particularly tough skinned and pungent 10 and can be quite elongate like leeks 10 or in some types may form bulbs up to 5 cm across 5 Young plants may be used as scallions in the spring and the bulblets may be used in cooking similarly to regular onions or preserved by pickling 10 Contents 1 Culinary use 1 1 Japan 1 2 Korea 2 Gallery 3 See also 4 ReferencesCulinary use editJapan edit The plant is known as wakegi ワケギ split scallion in Japan Considered a specialty of the Hiroshima Prefecture it is used in local cooking similar to other scallions 11 Korea edit See also Allium fistulosum Korea In Korea Allium proliferum along with A fistulosum is called pa 파 scallion while common onions are called yangpa 양파 Western scallion While A proliferum is called jjokpa 쪽파 separated scallion A fistulosum is called either daepa 대파 big scallion or silpa 실파 thread scallion depending on the size Unlike daepa and silpa which are usually used as a spice herb or garnish jjokpa is often used as the main ingredient of various scallion dishes in Korean cuisine Common dishes made with jjokpa include pajeon scallion pancakes and pa kimchi scallion kimchi citation needed nbsp Haemul pajeon scallion pancake with seafood nbsp Pa kimchi scallion kimchi Gallery edit nbsp Egyptian onions nbsp Tree onion nbsp Growing in a gardenSee also editList ofAllium species ScallionReferences edit Allium proliferum World Checklist of Selected Plant Families Royal Botanic Gardens Kew via The Plant List Note that this website has been superseded by World Flora Online Friesen N amp M Klaas 1998 Origin of some vegetatively propagated Allium crops studied with RAPD and GISH Genetic Resources and Crop Evolution 45 6 511 523 doi 10 1023 A 1008647700251 S2CID 26205471 Yamashita Kenichiro Tashiro Yosuke 2001 RFLP Analysis of Mitochondrial DNA in Wakegi Onion Engei Gakkai Zasshi 70 2 232 234 doi 10 2503 jjshs 70 232 James L Brewster 1 January 2008 Onions and Other Vegetable Alliums CABI pp 152 3 ISBN 978 1 84593 622 8 a b c Ruttle Jack Confessions of an Onion Addict National Gardening Association Retrieved 17 February 2011 Allium Piedmont Master Gardeners A few alliums such as A roseum and A sphaerocephalon produce aerial bulbils in the flower head Haim D Rabinowitch Lesley Currah 2002 Allium Crop Science Recent Advances CABI pp 87 8 ISBN 978 0 85199 510 6 Vincent E Rubatzky Mas Yamaguchi 6 December 2012 World Vegetables Principles Production and Nutritive Values Springer Science amp Business Media pp 307 8 ISBN 978 1 4615 6015 9 Jaime Prohens Tomas Fernando Nuez 6 December 2007 Vegetables II Fabaceae Liliaceae Solanaceae and Umbelliferae Springer Science amp Business Media pp 124 152 ISBN 978 0 387 74110 9 a b c Chandoha Walter Egyptian Onions are the Easiest PDF Cornell University Cooperative Extension Retrieved 26 April 2011 わけぎの需給動向 独立行政法人農畜産業振興機構 Retrieved 11 March 2022 Retrieved from https en wikipedia org w index php title Tree onion amp oldid 1196096744, wikipedia, wiki, book, books, library,
