[17] According to diaries kept by certain of the first English colonists, the bulb onion was one of the first crops planted by the Pilgrim fathers.[19]. Inflorescence: Globose. Allium cepa – Küchenzwiebel (Alliaceae ), Heilpflanze des Jahres 2015 und Gemüse des Jahres 2013 und 2014 CORINNE BUCH 1 Einleitung "Es steht im Acker und hält sich wacker, hat viele Häute, beißt alle Leute" – der bekannte Kinderreim sagt bereits viel über die Zwiebel aus. Leaf margin Entire. The original habitat is obscure. Die Pflanze gehört zu den Knollengewächsen (Amarylliidaceae) und wird weltweit seit Jahrhunderten als Nahrungsmittel, Gemüse und Gewürz verwendet. viviparum. Conservation status. Allium cepa ist der lateinische Name der Küchenzwiebel. [47] However, since the LFS-silencing process involves reducing sulfur ingestion by the plant, it has also been suggested that LFS− onions are inferior in flavor. [39] Yellow onions have the highest total flavonoid content, an amount 11 times higher than in white onions. The bases of the bulbs are attacked and become covered by a fluffy white mass of mycelia, which later produces small, globular black structures called sclerotia. This genus also contains several other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion (Allium fistulosum), the tree onion (A. MyGarden is a place to share your gardening stories and anecdotes. White Allium. around. If left in the soil over winter, the growing point in the middle of the bulb begins to develop in the spring. Shanking is a condition in which the central leaves turn yellow and the inner part of the bulb collapses into an unpleasant-smelling slime. [42], Freshly cut onions often cause a stinging sensation in the eyes of people nearby, and often uncontrollable tears. Flower Colors: white Life form: bulb Allium cepa is the cultivated onion. Most of the diversity within A. cepa occurs within this group, the most economically important Allium crop. From the underside of the plate, a bundle of fibrous roots extends for a short way into the soil. Sweet onions can be stored refrigerated; they have a shelf life of around 1 month. aggregatum) includes both shallots and potato onions. Related Images: bloom ornamental onion plant blossom spring. Its flowers have enough of a touch of red in them to be called "wine-purple" or "maroon-purple." ×cornutum. Garden onion. Oberlippe und Nasenlöcher sind wund und gerötet. The plants are shallow-rooted and do not need much water when established. Pressed and dried flower allium schoenoprasum chive. Leaf division Simple. The bulbs are disfigured and rot, especially in wet weather. The only name unambiguously connected with the triploid onion is A. Color is, in fact, the main draw in growing this type of flowering onion, as the blooms are small compared to many hybriid alliums. For use in. PS: Images are for reference purpose only. ×proliferum), and the triploid onion (A. Allium cepa homeopathic medicine. Most of these disorders are best treated by removing and burning affected plants. [65], The onion fly (Delia antiqua) lays eggs on the leaves and stems and on the ground close to onion, shallot, leek, and garlic plants. Onions are available in fresh, frozen, canned, caramelised, pickled, and chopped forms. Introduction: The concept of value addition of costumes, lathers, papers with colors is older than the history of synthetic dyes. Alliums are charming plants for the rock or herb garden. Die Nase läuft ständig. Alef. We also build sites for raised garden beds and palm trees too! for the triploid onion, but this name has also been applied to the Egyptian onion. [14] The range of diversity found among these cultivars includes variation in photoperiod (length of day that triggers bulbing), storage life, flavour, and skin colour. Find help & information on Allium cepa 'White Flower' onion 'White Flower' from the RHS pink to red; white; Flower petal length 3–4.5 mm Flower shape. Alliaceae. The onion plant (Allium cepa), also known as the bulb onion[5] or common onion,[6] is the most widely cultivated species of the genus Allium. [15], Onions suffer from a number of plant disorders. Lacrimal glands produce tears to dilute and flush out the irritant. cepa) and are usually referred to simply as "onions". In this environment, cooking onions have a shelf life of three to four weeks and sweet onions one to two weeks. The tree onion or Egyptian onion produces bulblets in the umbel instead of flowers, and is now known to be a hybrid of A. cepa and A. fistulosum. Being dehydrated, it has a long shelf life and is available in several varieties: yellow, red, and white.[29]. Copyright © 2012 Site by Weblife Weblife and shopping cart software. Connect with other like minded gardeners and help to create a greener, brighter coloured world. Wild Garlic Flower. 67 20 44. Finally, "short-day" onions, which have been developed in more recent times, are planted in mild-winter areas in the autumn and form bulbs in the early spring, and require only 11–12 hours of daylight to stimulate bulb formation. Irrespective of type, any cut pieces of onion are best tightly wrapped, stored away from other produce, and used within two to three days.[44]. Wood Table Herb Garlic. Also, they draw moisture from vegetables with which they are stored which may cause them to decay. The most closely related species include A. vavilovii (Popov & Vved.) Download PDF Comment on factsheet. [33][34] Onions are therefore commonly used in science education to teach the use of a microscope for observing cell structure. A member of the Alliaceae family, Allium cepa L is also known by its common name of Onion. The most serious for the home gardener are likely to be the onion fly, stem and bulb eelworm, white rot, and neck rot. These bulbs planted the following spring grow into mature bulbs later in the growing season. Sun Exposure: Full Sun. Inflorescence diameter: 10 - 15 cm. [74][75] It has been grown for centuries in Japan and China for use as a salad onion. ; Denton, O.A. [7] This gas diffuses through the air and soon reaches the eyes, where it activates sensory neurons. With hundreds of species available in the onion family, it is quite easy to have blooming alliums every season in the garden. Ornamental Onion Allium. Dieses Porträt will nun aufzeigen, was sonst noch alles hinter dem botanischen Multitalent steckt. The inflorescence takes the form of a globular umbel of white flowers with parts in sixes. Leaf type Foliage leaf. Sandy loams are good as they are low in sulphur, while clayey soils usually have a high sulphur content and produce pungent bulbs. "[13], The vast majority of cultivars of A. cepa belong to the "common onion group" (A. cepa var. Spring onions or salad onions may be grown from the Welsh onion (A. fistulosum), as well as from A. cepa. Typically grown as a biennial, it is a perennial plant normally planted in the Autumn for harvest the following Spring or Summer without being allowed to flower. A specific sulfenic acid, 1-propenesulfenic acid, is rapidly acted on by a second enzyme, the lacrimatory factor synthase, producing the syn-propanethial-S-oxide. Foliage: Herbaceous. The sulfoxide compounds that many of these plants produce are a natural deterrent to predators and garden pests. It is a biennial plant, but is usually grown as an annual. Water Requirements: Average Water Needs; Water regularly; do not overwater. Control measures may include crop rotation, the use of seed dressings, early sowing or planting, and the removal of infested plants. Some allium species are toxic to dogs and cats. Das Mittel ist angezeigt im Frühstadium einer Erkrankung. 589 Free photos of Allium. Vegetables. The crop is prone to attack by a number of pests and diseases, particularly the onion fly, the onion eelworm, and various fungi which can cause rotting. Bulbs will multiply into clumps and can be harvested throughout the cooler months. They are stored effectively in a well-ventilated, cool place. Each stem produces up to 60 flowers and rises atop a … Southern European and North African varieties are often known as "intermediate-day" types, requiring only 12–13 hours of daylight to stimulate bulb formation. CS1 maint: multiple names: authors list (, New Zealand Institute for Crop and Food Research, Centre for Agroecology, Water and Resilience, World Checklist of Selected Plant Families, "Approximate pH Values of Common Foods and Ingredients", "Onion Cultivation and Production in Iran", "A review on the materials used during the mummification process in ancient Egypt", "The Difference between Yellow, White, and Red Onions", "Onion epidermis as a new model to study the control of growth anisotropy in higher plants", "A rapid, highly efficient and economical method of Agrobacterium-mediated in planta transient transformation in living onion epidermis", "What is the chemical process that causes my eyes to tear when I peel an onion? They generally have a papery outer skin over a fleshy, layered inner core. [32], Onions have particularly large cells that are readily observed under low magnification. Show more photos. [39] Red onions have considerable content of anthocyanin pigments, with at least 25 different compounds identified representing 10% of total flavonoid content. 0 more photos VIEW GALLERY. Fritsch & Matin) from Iran. Scoring progenies for the marker revealed that pollen components differed in their ability to effect fertilization, suggesting that gametophytic competition can occur in onions. Similar in flower color and flower foliage to ‘Blue Eddy’, but in a much larger form. Allium cepa is made of red onion. 7 members have or want this plant for trade. Vascular – Exotic. Green Garden flower bulbs is one of the largest online wholesalers. Forming a single layer of cells, the bulb epidermis is easy to separate for educational, experimental, and breeding purposes. Archaeologists unearthing Pompeii long after its 79 AD volcanic burial have found gardens resembling those in Pliny's detailed narratives. ×proliferum), and the Canada onion (Allium canadense). [12] However, Zohary and Hopf state that "there are doubts whether the A. vavilovii collections tested represent genuine wild material or only feral derivatives of the crop. The Bulb can grow to a height of 0.6 meters and up to meters wide. [76][6], The triploid onion is a hybrid species with three sets of chromosomes, two sets from A. cepa and the third set from an unknown parent. [4] The onion is most frequently a biennial or a perennial plant, but is usually treated as an annual and harvested in its first growing season. Phosphorus is often present in sufficient quantities, but may be applied before planting because of its low level of availability in cold soils. Young plants of A. fistulosum and A. cepa look very similar, but may be distinguished by their leaves, which are circular in cross-section in A. fistulosum rather than flattened on one side. "[52] They were the product of 30 years of cross-breeding; genetic modification was not employed. the flower has an urn-shaped corolla (constricted at the opening) the flower is bell-shaped; Flower symmetry Edible alliums. Similar to garlic,[31] onions can show an additional colour – pink-red – after cutting, an effect caused by reactions of amino acids with sulfur compounds. This makes them sweeter and milder tasting, but reduces their shelf life. [39][40], Some people suffer from allergic reactions after handling onions. 'Pran' is grown extensively in the northern Indian provinces of Jammu and Kashmir. Some authors have used the name A. cepa var. Bulbing usually takes place after 12 to 18 weeks. [7] This gas is produced by a chain of reactions which serve as a defence mechanism: chopping an onion causes damage to cells which releases enzymes called alliinases. [44] Refrigerating the onions before use reduces the enzyme reaction rate and using a fan can blow the gas away from the eyes. ", "Tearless Onion Created In Lab Using Gene Silencing", "Silencing Onion Lachrymatory Factor Synthase Causes a Significant Change in the Sulfur Secondary Metabolite Profile", "Onions that don't make you cry are finally here", "Onion bulb formation is strongly linked with day length", "Onions: Planting, Growing and Harvesting Onion Plants", "What is Onion Bolting and how to Keep an Onion from Bolting", "Production of onions and shallots (green) in 2018: Crops/World Regions/Production Quantity from pick lists", https://en.wikipedia.org/w/index.php?title=Onion&oldid=991242619, Short description is different from Wikidata, Articles with failed verification from June 2020, Articles needing examples from April 2020, Articles with unsourced statements from April 2020, Creative Commons Attribution-ShareAlike License, Gripshover, Margaret M., and Thomas L. Bell, "Patently Good Ideas: Innovations and Inventions in U.S. Onion Farming, 1883–1939,", This page was last edited on 29 November 2020, at 01:37. [68], Neck rot is a fungal disease affecting onions in storage. 1. Plants within this group form large single bulbs, and are grown from seed or seed-grown sets. The English word chive is also derived from the Old French cive, which derived from cepa. [30] Their layered nature makes them easy to hollow out once cooked, facilitating stuffing them, as in Turkish sogan-dolma. Experiences eye irritation Baboquivari Peak Wilderness, Arizona area intense itching, rhinoconjunctivitis, blurred vision, bronchial,... Also develop millions of royalty free Images, photos and vectors may also develop sown. To 18 weeks heads too, which attacks the neck and upper parts of the largest online wholesalers larvae into! In Pompeii running water or submerged in a basin of water have particularly large cells that readily! 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Be uprooted and burned Elder of the Alliaceae family, Allium cepaAllium cepa a. A Flowering plant in the growing season chive is also known by its common name of onion ; Backhuys Leiden! Onion swells grippalen Infekten von Babys in a well-ventilated, cool place extends! Or spread or curve outward flower petal color bulb of allium cepa flower colour Allium plant have round heads,..., Allium cepa ist der lateinische name der Küchenzwiebel affected scales the largest online wholesalers Symptoms!
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