122-610: Pea ( pisum in Latin) is a pulse , vegetable or fodder crop, but the word often refers to the seed or sometimes the pod of this flowering plant species. Carl Linnaeus gave the species the scientific name Pisum sativum in 1753 (meaning cultivated pea). Some sources now treat it as Lathyrus oleraceus ; however the need and justification for the change is disputed. Each pod contains several seeds (peas), which can have green or yellow cotyledons when mature. Botanically, pea pods are fruit , since they contain seeds and develop from
244-442: A cultivar group based on the variety Pisum sativum var. macrocarpum Ser. named in 1825. It was described as having very compressed non-leathery edible pods in the original publication. The scientific name Pisum sativum var. saccharatum Ser. is often misused for snow peas. The variety under this name was described as having sub-leathery and compressed- terete pods and a French name of petit pois . The description
366-416: A volcanic origin. He also deals with precious stones, emeralds , amethysts , onyx , jasper , etc., and describes a variety of "sapphire" that was blue with veins of gold, and thus was presumably lapis lazuli . He knew that pearls came from shellfish , that coral came from India, and speaks of the fossilized remains of organic life. He also considers the practical uses of various stones, such as
488-580: A Swiss village that are believed to date back to the Stone Age . Archaeological evidence suggests that these peas must have been grown in the eastern Mediterranean and Mesopotamian regions at least 5,000 years ago and in Britain as early as the 11th century. The soybean was domesticated around 5,000 years ago in China from a descendant of the wild vine Glycine soja. The oldest-known domesticated beans in
610-454: A development of the later 19th century. The top producer of green peas – by far – is China with 12.2 million tons, followed by India (4.8 million tons), USA (0.31 million tons), France (0.23 million tons) and Egypt (0.15 million tons). United Kingdom, Pakistan, Algeria, Peru and Turkey complete the top 10. The term pea originates from the Latin word pisum , which is the latinisation of
732-413: A diet of perennial grasses. Factors include larger consumption, faster digestion, and higher feed conversion rate . The type of crop grown for animal rearing depends on the farming system. In cattle rearing, legume trees such as Gliricidia sepium can be planted along edges of fields to provide shade for cattle, the leaves and bark are often eaten by cattle. Green manure can be grown between harvesting
854-426: A different form, and what additional structures of thought he placed upon them, can only be partially determined because of the loss of so many of his writings. Many of his opinions have to be reconstructed from the works of later writers such as Alexander of Aphrodisias and Simplicius . Theophrastus seems to have carried out still further the grammatical foundation of logic and rhetoric , since in his book on
976-584: A few hours of harvest. In India , fresh peas are used in various dishes such as aloo matar (curried potatoes with peas) or mattar paneer ( paneer cheese with peas), though they can be substituted with frozen peas as well. Peas are also eaten raw, as they are sweet when fresh off the bush. Green peas known as hasiru batani in Kannada are used to make curry and gasi. Split peas are also used to make dal , particularly in Guyana , and Trinidad , where there
1098-494: A happiness resting merely upon virtue, or, consequently, to hold fast by the unconditional value of morality . He subordinated moral requirements to the advantage at least of a friend, and had allowed in prosperity the existence of an influence injurious to them. In later times, fault was found with his expression in the Callisthenes , "life is ruled by fortune, not wisdom" ( vitam regit fortuna non sapientia ). That in
1220-432: A manner of which Aristotle would not have approved. Theophrastus was opposed to eating meat on the grounds that it robbed animals of life and was therefore unjust. Non-human animals, he said, can reason, sense, and feel just as human beings do. The marble herm figure with the bearded head of philosopher type, bearing the explicit inscription, must be taken as purely conventional. Unidentified portrait heads did not find
1342-455: A necessary consequence of all activity. In ethics , he regarded happiness as depending on external influences as well as on virtue . Most of the biographical information about Theophrastus was provided by Diogenes Laërtius ' Lives and Opinions of Eminent Philosophers , written more than four hundred years after Theophrastus's time. He was a native of Eresos in Lesbos . His given name
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#17327648830731464-520: A number of pathogens , including insects, viruses, bacteria and fungi. In particular, virus disease of peas has worldwide economic importance. Additionally, insects such as the pea leaf weevil ( Sitona lineatus ) can damage peas and other pod fruits. The pea leaf weevil is native to Europe , but has spread to other places such as Alberta, Canada . They are about 3.5 millimetres (0.14 in)—5.5 millimetres (0.22 in) long and are distinguishable by three light-coloured stripes running length-wise down
1586-465: A plant-based protein source in the world marketplace. Products containing legumes grew by 39% in Europe between 2013 and 2017. There is a common misconception that adding salt before cooking prevents them from cooking through. Legumes may not soften because they are old, or because of hard water or acidic ingredients in the pot; salting before cooking results in better seasoning . Legumes are
1708-783: A ready market in post-Renaissance Rome. This bust was formerly in the collection of marchese Pietro Massimi at Palazzo Massimi and belonged to marchese L. Massimi at the time the engraving was made. It is now in the Villa Albani , Rome (inv. 1034). The inscribed bust has often been illustrated in engravings and photographs: a photograph of it forms the frontispiece to the Loeb Classical Library Theophrastus: Enquiry into Plants vol. I, 1916. André Thevet illustrated in his iconographic compendium, Les vraies Pourtrats et vies des Hommes Illustres (Paris, 1584), an alleged portrait plagiarized from
1830-761: A reference amount of 100 grams ( 3 + 1 ⁄ 2 ounces), raw green peas supply 339 kilojoules (81 kilocalories) of food energy , and are a rich source (20% or more of the Daily Value , DV) of vitamin C (48% DV), vitamin K , thiamine , and manganese , with several B vitamins and dietary minerals in moderate amounts (11–16% DV) (table). The pea karyotype consists of seven chromosomes , five of which are acrocentric and two submetacentric . Despite its scientific popularity, its relatively large genome size (4.45 Gb ) made it challenging to sequence compared to other legumes such as Medicago truncatula and soybeans . The International Pea Genome Sequencing Consortium
1952-1557: A serious pest to broad beans and other beans. Common hosts for this pest are fathen, thistle and dock. Pea weevil and bean weevil damage leaf margins leaving characteristics semi-circular notches. Stem nematodes are very widespread but will be found more frequently in areas where host plants are grown. Common legume diseases include anthracnose , caused by Colletotrichum trifolii ; common leaf spot caused by Pseudomonas syringae pv. syringae ; crown wart caused by Physoderma alfalfae ; downy mildew caused by Peronospora trifoliorum ; fusarium root rot caused by Fusarium spp.; rust caused by Uromyces striatus ; sclerotina crown and stem rot caused by Sclerotinia trifoliorum ; Southern blight caused by Sclerotium rolfsii ; pythium (browning) root rot caused by Pythium spp.; fusarium wilt caused by Fusarium oxysporum ; root knot caused by Meloidogyne hapla . These are all classified as biotic problems. Abiotic problems include nutrient deficiencies, (nitrogen, phosphorus, potassium, copper, magnesium, manganese, boron, zinc), pollutants (air, water, soil, pesticide injury, fertilizer burn), toxic concentration of minerals, and unfavorable growth conditions. Seed viability decreases with longer storage time. Studies done on vetch , broad beans , and peas show that they last about 5 years in storage. Environmental factors that are important in influencing germination are relative humidity and temperature. Two rules apply to moisture content between 5 and 14 percent:
2074-910: A significant source of protein , dietary fibre , carbohydrates , and dietary minerals ; for example, a 100 gram serving of cooked chickpeas contains 18 percent of the Daily Value (DV) for protein, 30 percent DV for dietary fiber, 43 percent DV for folate and 52 percent DV for manganese . Legumes are an excellent source of resistant starch ; this is broken down by bacteria in the large intestine to produce short-chain fatty acids (such as butyrate ) used by intestinal cells for food energy . Forage legumes are of two broad types. Some, like alfalfa , clover , vetch ( Vicia ), stylo ( Stylosanthes ), or Arachis , are sown in pasture and grazed by livestock. Others, such as Leucaena or Albizia , are woody shrubs or trees that are either broken down by livestock or regularly cut by humans to provide fodder. Legume-based feeds improve animal performance over
2196-487: A simple carpel and usually dehisces (opens along a seam) on two sides. Most legumes have symbiotic nitrogen-fixing bacteria in structures called root nodules . Some of the fixed nitrogen becomes available to later crops, so legumes play a key role in crop rotation . The term pulse , as used by the United Nations' Food and Agriculture Organization (FAO), is reserved for legume crops harvested solely for
2318-512: A source for other lapidaries until at least the Renaissance , Theophrastus classified rocks and gems based on their behavior when heated, further grouping minerals by common properties, such as amber and magnetite , which both have the power of attraction. Theophrastus describes different marbles ; mentions coal , which he says is used for heating by metal-workers; describes the various metal ores ; and knew that pumice stones had
2440-485: A spirit entirely independent of organic activity, must therefore have appeared to him very doubtful; yet he appears to have contented himself with developing his doubts and difficulties on the point, without positively rejecting it. Other Peripatetics, like Dicaearchus , Aristoxenus , and especially Strato , developed further this naturalism in Aristotelian doctrine. Theophrastus seems, generally speaking, where
2562-405: A traditional dish. In North America, a similarly traditional dish is split pea soup . Pea soup is eaten in many other parts of the world, including northern Europe , parts of middle Europe , Russia , Iran , Iraq and India . In Chinese cuisine , the tender new growth [leaves and stem] dou miao ( 豆苗 ; dòu miáo ) are commonly used in stir-fries. Much like picking the leaves for tea,
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#17327648830732684-410: Is blanching . The peas are boiled for a few minutes to remove any enzymes that may shorten their shelf life. They are then cooled and removed from the water. The final step is the actual freezing to produce the final product. This step may vary considerably; some companies freeze their peas by air blast freezing, where the vegetables are put through a tunnel at high speeds and frozen by cold air. Finally,
2806-657: Is a significant population of Indians . Dried peas are often made into a soup or simply eaten on their own. In Japan , China , Taiwan and some Southeast Asian countries, including Thailand , the Philippines and Malaysia , peas are roasted and salted, and eaten as snacks . In the Philippines, peas, while still in their pods, are a common ingredient in viands and pansit . In the UK, dried yellow or green split peas are used to make pease pudding (or "pease porridge"),
2928-607: Is inconsistent with the appearance of snow peas, and therefore botanists have replaced this name with Pisum sativum var. macrocarpum. The field pea is a type of pea sometimes called P. sativum subsp. arvense (L.) Asch. It is also known as dun (grey-brown) pea, Kapucijner pea, or Austrian winter pea, and is one of the oldest domesticated crops, cultivated for at least 7,000 years. Field peas are now grown in many countries for both human consumption and stockfeed. There are several cultivars and colors including blue, dun (brown), maple and white. This pea should not be confused with
3050-465: Is relatively shallow and small, but well nodulated. The field pea is a cool-season legume crop that is grown on over 25 million acres worldwide. It has been an important grain legume crop for millennia, seeds showing domesticated characteristics dating from at least 7000 years ago have been found in archaeological sites around what is now Turkey . Field peas or "dry peas" are marketed as a dry, shelled product for either human or livestock food, unlike
3172-703: Is restricted to the Mediterranean Basin and the Near East. The earliest archaeological finds of peas date from the late Neolithic era of current Syria, Anatolia, Israel, Iraq, Jordan and Greece. In Egypt, early finds date from c. 4800 –4400 BC in the Nile delta area, and from c. 3800–3600 BC in Upper Egypt. The pea was also present in Georgia in the 5th millennium BC. Farther east,
3294-725: Is testified to not only by a number of treatises on individual subjects of zoology , of which, besides the titles, only fragments remain, but also by his books On Stones , his Enquiry into Plants , and On the Causes of Plants (see below), which have come down to us entire. In politics, also, he seems to have trodden in the footsteps of Aristotle. Besides his books on the State ( Πολιτικῶν and Πολιτικοῦ ), we find quoted various treatises on Education ( Περὶ παιδείας βασιλέως and Περὶ παιδείας ), on Royalty ( Περὶ βασιλείας , Περὶ παιδείας βασιλέως and Πρὸς Κάσανδρον περὶ βασιλείας ), on
3416-448: Is their versatility, often assuming multiple roles concurrently. The extent of these roles is contingent upon the stage of maturity at which they are harvested. Grain legumes are cultivated for their seeds, for humans and animals to eat, or for oils for industrial uses. Grain legumes include beans , lentils , lupins , peas , and peanuts . Legumes are a key ingredient in vegan meat and dairy substitutes . They are growing in use as
3538-450: Is then converted to another form, ammonium ( NH + 4 ), usable by (some) plants by the following reaction: The root nodules of peas and other legumes are sources of nitrogen that they can use to make amino acids , constituents of proteins. Hence, legumes are good sources of plant protein . When a pea plant dies in the field, for example following the harvest , all of its remaining nitrogen, incorporated into amino acids inside
3660-418: Is therefore a necessary ingredient in the production of proteins. Hence, legumes are among the best sources of plant protein. When a legume plant dies in the field, for example following the harvest , all of its remaining nitrogen, incorporated into amino acids inside the remaining plant parts, is released back into the soil. In the soil, the amino acids are converted to nitrate ( NO − 3 ), making
3782-416: Is to thrust branches pruned from trees or other woody plants upright into the soil, providing a lattice for the peas to climb. Branches used in this fashion are called pea sticks or sometimes pea brush . Metal fences, twine , or netting supported by a frame are used for the same purpose. In dense plantings, peas give each other some measure of mutual support. Pea plants can self-pollinate . The wild pea
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3904-639: Is usually stated to be ... we must set certain limits to purposiveness and to the effort after the best, and not assert it to exist in all cases without qualification. He did not follow the incessant attempts by Aristotle to refer phenomena to their ultimate foundations, or his attempts to unfold the internal connections between the latter, and between them and phenomena. In antiquity, it was a subject of complaint that Theophrastus had not expressed himself with precision and consistency respecting God , and had understood it at one time as Heaven , at another an (enlivening) breath ( pneuma ). Theophrastus did not allow
4026-512: Is very likely that he did so at the urging of Theophrastus. It seems that it was on Lesbos that Aristotle and Theophrastus began their research into natural science , with Aristotle studying animals and Theophrastus studying plants. Theophrastus probably accompanied Aristotle to Macedonia when Aristotle was appointed tutor to Alexander the Great in 343/2. Around 335 BC, Theophrastus moved with Aristotle to Athens, where Aristotle began teaching in
4148-468: The Academics , and a sketch of the political doctrine of Plato . He studied general history, as we know from Plutarch 's lives of Lycurgus , Solon , Aristides , Pericles , Nicias , Alcibiades , Lysander , Agesilaus , and Demosthenes , which were probably borrowed from the work on Lives ( Περὶ βίων ). But his main efforts were to continue the labours of Aristotle in natural history . This
4270-702: The Best State ( Περὶ τῆς ἀρίστης πολιτείας ), on Political Morals ( Πολιτικῶν ἐθῶν ), and particularly his works on the Laws ( Νόμων κατὰ στοιχεῖον , Νόμων ἐπιτομῆς and Περὶ νόμων ), one of which, containing a recapitulation of the laws of various barbarian as well as Greek states, was intended to be a companion to Aristotle's outline of Politics , and must have been similar to it. He also wrote on oratory and poetry . Theophrastus, without doubt, departed further from Aristotle in his ethical writings, as also in his metaphysical investigations of motion ,
4392-554: The Characters . George Eliot also took inspiration from Theophrastus's Characters , most notably in her book of caricatures, Impressions of Theophrastus Such . Writing the "character sketch" as a scholastic exercise also originated in Theophrastus's typology. A treatise On Sense Perception ( Περὶ αἰσθήσεων ) and its objects is important for a knowledge of the doctrines of the more ancient Greek philosophers regarding
4514-728: The Codex Urbinas in the Vatican Library , which was not made known to J. G. Schneider , who made the first modern critical edition, 1818–21, and the excerpts in the Codex Parisiensis in the Bibliothèque nationale de France . His book Characters ( Ἠθικοὶ χαρακτῆρες ) contains thirty brief outlines of moral types. They are the first recorded attempt at systematic character writing . The book has been regarded by some as an independent work; others incline to
4636-565: The Greek πίσον ( pison ), neuter variant form of πίσος ( pisos ) 'pea'. It was adopted into English as the noun pease (plural peasen ), as in pease pudding . However, by analogy with other plurals ending in -s , speakers began construing pease as a plural and constructing the singular form by dropping the -s , giving the term pea . This process is known as back-formation . Raw green peas are 79% water, 14% carbohydrates , 5% protein , and contain negligible fat (table). In
4758-528: The Lyceum . When, after the death of Alexander, anti-Macedonian feeling forced Aristotle to leave Athens, Theophrastus remained behind as head ( scholarch ) of the Peripatetic school , a position he continued to hold after Aristotle's death in 322/1. Aristotle in his will made him guardian of his children, including Nicomachus , with whom he was close. Aristotle likewise bequeathed to him his library and
4880-708: The Natural Philosophy ( Περὶ φύσεως , Περὶ φυσικῶν , Φυσικῶν and others), on Heaven ( Περὶ οὐρανοῦ ), and on Meteorological Phenomena ( Τῆς μεταρσιολεσχίας and Μεταρσιολογικῶν ). In addition, Theophrastus wrote on the Warm and the Cold ( Περὶ θερμοῦ καὶ ψυχροῦ ), on Water ( Περὶ ὕδατος ), Fire ( Περὶ πυρóς ), the Sea ( Περὶ θαλάττης ), on Coagulation and Melting ( Περὶ πήξεων καὶ τήξεων ), on various phenomena of organic and spiritual life, and on
5002-628: The Neolithic dawn of agriculture improved their yield. In the early 3rd century BC, Theophrastus mentions peas among the legumes that are sown late in the winter because of their tenderness. In the first century AD, Columella mentions them in De re rustica , when Roman legionaries still gathered wild peas from the sandy soils of Numidia and Judea to supplement their rations. In the Middle Ages , field peas are constantly mentioned, as they were
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5124-504: The Soul ( Περὶ ψυχῆς ), on Experience ( Περὶ ἐμπειρίας ) and On Sense Perception (also known as On the Senses ; Περὶ αἰσθήσεων ). Likewise, we find mention of monographs of Theophrastus on the early Greek philosophers Anaximenes , Anaxagoras , Empedocles , Archelaus , Diogenes of Apollonia , Democritus , which were made use of by Simplicius ; and also on Xenocrates , against
5246-530: The Topica of Theophrastus. Closely connected with this treatise was that upon ambiguous words or ideas, which, without doubt, corresponded to book Ε of Aristotle's Metaphysics . Theophrastus introduced his Physics with the proof that all natural existence, being corporeal and composite, requires principles , and first and foremost, motion , as the basis of all change. Denying the substance of space , he seems to have regarded it, in opposition to Aristotle, as
5368-520: The Winds , and on the signs of Waters , Winds , and Storms . Various smaller scientific fragments have been collected in the editions of Johann Gottlob Schneider (1818–21) and Friedrich Wimmer (1842–62) and in Hermann Usener 's Analecta Theophrastea . The Metaphysics (anachronistic Greek title: Θεοφράστου τῶν μετὰ τὰ φυσικά ), in nine chapters (also known as On First Principles ),
5490-759: The black locust ( Robinia pseudoacacia ), Kentucky coffeetree ( Gymnocladus dioicus ), Laburnum , and the woody climbing vine Wisteria , have poisonous elements. Neanderthals and early modern humans used wild pulses when cooking meals 70,000 to 40,000 years ago. Traces of pulse production have been found around the Ravi River ( Punjab ), the seat of the Indus Valley civilisation , from c. 3300 BC. Meanwhile, evidence of lentil cultivation has also been found in Egyptian pyramids and cuneiform recipes . Dry pea seeds have been discovered in
5612-545: The cowpea ( Vigna unguiculata ) which is sometimes called the "field pea" in warmer climates. It is a climbing annual legume with weak, viny, and relatively succulent stems. Vines often are 4 to 5 feet (120 to 150 cm) long, but when grown alone, field pea's weak stems prevent it from growing more than 1.5 to 2 feet (45 to 60 cm) tall. Leaves have two leaflets and a tendril. Flowers are white, pink, or purple. Pods carry seeds that are large (4,000 seeds/lb), nearly spherical, and white, gray, green, or brown. The root system
5734-405: The polyculture practice known as coconut-soybean intercropping . Grain legumes are grown in coconut ( Cocos nuficera ) groves in two ways: intercropping or as a cash crop. These are grown mainly for their protein, vegetable oil and ability to uphold soil fertility. However, continuous cropping after 3–4 years decrease grain yields significantly. A common pest of grain legumes that is noticed in
5856-694: The soul , and God . Besides these writings, Theophrastus wrote several collections of problems, out of which some things at least have passed into the Problems that have come down to us under the name of Aristotle, and commentaries, partly dialogue , to which probably belonged the Erotikos ( Ἐρωτικός ), Megacles ( Μεγακλῆς ), Callisthenes ( Καλλισθένης ), and Megarikos ( Μεγαρικός ), and letters, partly books on mathematical sciences and their history. Many of his surviving works exist only in fragmentary form. "The style of these works, as of
5978-412: The thorax . The weevil larvae feed on the root nodules of pea plants, which are essential to the plants' supply of nitrogen , and thus diminish leaf and stem growth. Adult weevils feed on the leaves and create a notched, "c-shaped" appearance on the outside of the leaves. The pea moth can be a serious pest producing caterpillars the resemble small white maggots in the pea-pods. The caterpillars eat
6100-414: The "father of botany" for his groundbreaking works " Enquiry into Plants " ( Ancient Greek : Περὶ φυτῶν ἱστορία , romanized : Peri phytōn historia ) and "On the Causes of Plants," ( Ancient Greek : Περὶ αἰτιῶν φυτικῶν , romanized : Peri aitiōn phytikōn ) Theophrastus established the foundations of botanical science . His given name was Tyrtamos ( Ancient Greek : Τύρταμος );
6222-844: The Americas were found in Guitarrero Cave , an archaeological site in Peru , and dated to around the second millennium BCE. Genetic analyses of the common bean Phaseolus show that it originated in Mesoamerica , and subsequently spread southward, along with maize and squash, traditional companion crops. In the United States, the domesticated soybean was introduced in 1770 by Benjamin Franklin after he sent seeds to Philadelphia from France. The International Year of Pulses 2016
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#17327648830736344-427: The Causes of Plants was originally eight books, of which six survive. It concerns the growth of plants; the influences on their fecundity; the proper times they should be sown and reaped; the methods of preparing the soil, manuring it, and the use of tools; and of the smells, tastes, and properties of many types of plants. The work deals mainly with the economical uses of plants rather than their medicinal uses, although
6466-439: The Causes of Plants , were an important influence on Renaissance science . There are also surviving works On Moral Characters , On Sense Perception , and On Stones , as well as fragments on Physics and Metaphysics . In philosophy, he studied grammar and language and continued Aristotle's work on logic . He also regarded space as the mere arrangement and position of bodies, time as an accident of motion, and motion as
6588-889: The English during this time, which became known as "garden" or "English" peas. The popularity of green peas spread to North America . Thomas Jefferson grew more than 30 cultivars of peas on his estate. With the invention of canning, peas were one of the first vegetables to be canned. Fresh peas are often eaten boiled and flavored with butter and/or spearmint as a side dish vegetable. Salt and pepper are also commonly added to peas when served. Fresh peas are also used in pot pies , salads and casseroles . Pod peas ( snow peas and snap peas ) are used in stir-fried dishes, particularly those in American Chinese cuisine . Pea pods do not keep well once picked, and if not used quickly, are best preserved by drying, canning or freezing within
6710-530: The Greek plants may have come from his own observations, as he is known to have travelled throughout Greece, and to have had a botanical garden of his own; but the works also profit from the reports on plants of Asia brought back from those who followed Alexander the Great : to the reports of Alexander's followers he owed his accounts of such plants as the cotton-plant , banyan , pepper , cinnamon , myrrh , and frankincense . Theophrastus's Enquiry into Plants
6832-639: The King, the Queen, Cardinal Mazarin and Monsieur, the king's brother. Immediately established and grown for earliness warmed with manure and protected under glass , they were still a luxurious delicacy in 1696, when Mme de Maintenon and Mme de Sevigné each reported that they were "a fashion, a fury". The world’s first sweet tasting pea was developed in the 18th century by amateur plant breeder Thomas Edward Knight of Downton, near Salisbury, England. Modern split peas , with their indigestible skins rubbed off, are
6954-582: The Mediterranean coastal regions. In this condition, the toxic reaction to eating most, if not all, beans is hemolytic anemia , and in severe cases, the released circulating free hemoglobin causes acute kidney injury . Peas, like many legumes, contain symbiotic bacteria called Rhizobia within root nodules of their root systems . These bacteria have the special ability to fix nitrogen from atmospheric, molecular nitrogen ( N 2 ) into ammonia ( NH 3 ). The chemical reaction is: Ammonia
7076-611: The Peripatetic school for thirty-six years, during which time the school flourished greatly. He is often considered the father of botany for his works on plants. After his death, the Athenians honoured him with a public funeral. His successor as head of the school was Strato of Lampsacus . The interests of Theophrastus were wide ranging, including biology , physics , ethics and metaphysics . His two surviving botanical works, Enquiry into Plants (Historia Plantarum) and On
7198-584: The United States. In modern times peas are usually boiled or steamed , which breaks down the cell walls and makes them taste sweeter and the nutrients more bioavailable . Along with broad beans and lentils , these formed an important part of the diet of most people in the Middle East, North Africa and Europe during the Middle Ages . By the 17th and 18th centuries, it had become popular to eat peas "green", that is, while they are immature and right after they are picked. New cultivars of peas were developed by
7320-428: The appearance of the offspring, and the non-dominant, or recessive , trait appeared only when it was inherited from both parents. He did further experiments that showed each trait is separately inherited. Unwittingly, Mendel had solved a major problem with Charles Darwin 's theory of evolution : how new traits were preserved and not blended back into the population, a question Darwin himself did not answer. Mendel's work
7442-418: The basis of pease porridge and pea soup , staples of medieval cuisine ; in Europe, consuming fresh immature green peas was an innovation of early modern cuisine . A pea is a most commonly green, occasionally golden yellow, or infrequently purple pod-shaped vegetable , widely grown as a cool-season vegetable crop. The seeds may be planted as soon as the soil temperature reaches 10 °C (50 °F), with
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#17327648830737564-413: The best treatises on that doctrine. In different monographs he seems to have tried to expand it into a general theory of science . To this, too, may have belonged the proposition quoted from his Topics , that the principles of opposites are themselves opposed, and cannot be deduced from one and the same higher genus. For the rest, some minor deviations from the Aristotelian definitions are quoted from
7686-408: The botanical books, suggests that, as in the case of Aristotle, what we possess consists of notes for lectures or notes taken of lectures," his translator Arthur F. Hort remarks. "There is no literary charm; the sentences are mostly compressed and highly elliptical, to the point sometimes of obscurity". The text of these fragments and extracts is often so corrupt that there is a certain plausibility to
7808-528: The bust, supporting his fraud with the invented tale that he had obtained it from the library of a Greek in Cyprus and that he had seen a confirming bust in the ruins of Antioch. A world is named Theophrastus in the 2014 Firefly graphic novel Serenity: Leaves on the Wind . Theodor Geisel used the name "Theophrastus" as the given name of his pen-name alter ego, Dr. Seuss . A board game named Theophrastus
7930-530: The complete failure of a charge of impiety brought against him. He was honored with a public funeral, and "the whole population of Athens, honouring him greatly, followed him to the grave." He was succeeded as head of the Lyceum by Strato of Lampsacus . From the lists of Diogenes, giving 227 titles, it appears that the activity of Theophrastus extended over the whole field of contemporary knowledge. His writing probably differed little from Aristotle's treatment of
8052-410: The definition of pleasure, likewise, he did not coincide with Aristotle, seems to be indicated by the titles of two of his writings, one of which dealt with pleasure generally, the other with pleasure as Aristotle had defined it. Although, like his teacher, he preferred contemplative (theoretical), to active (practical) life, he preferred to set the latter free from the restraints of family life, etc. in
8174-401: The developing peas making them unsightly and unsuitable for culinary use. Prior to the use of modern insecticides, pea moth caterpillars were a very common sight in pea pods. Legume Legumes ( / ˈ l ɛ ɡ j uː m , l ə ˈ ɡ j uː m / ) are plants in the family Fabaceae (or Leguminosae), or the fruit or seeds of such plants. When used as a dry grain for human consumption,
8296-461: The dominant trait. Then he allowed the F 1 generation to self pollinate and observed their offspring, the Filial-2 (abbreviated F 2 ) generation. The F 2 plants had the dominant trait in approximately a 3:1 ratio. He studied later generations of self pollinated plants, and performed crosses to determine the nature of the pollen and egg cells. Mendel reasoned that each parent had a 'vote' in
8418-914: The dry seed. This excludes green beans and green peas , which are considered vegetable crops. Also excluded are seeds that are mainly grown for oil extraction ( oilseeds like soybeans and peanuts ), and seeds which are used exclusively for sowing forage ( clovers , alfalfa ). However, in common usage, these distinctions are not always clearly made, and many of the varieties used for dried pulses are also used for green vegetables, with their beans in pods while young. Some Fabaceae, such as Scotch broom and other Genisteae , are leguminous but are usually not called legumes by farmers, who tend to restrict that term to food crops. The FAO recognizes 11 primary pulses, excluding green vegetable legumes (e.g. green peas) and legumes used mainly for oil extraction (e.g., soybeans and groundnuts) or used only as seed (e.g., clover and alfalfa). Legumes are widely distributed as
8540-423: The elements of speech , he distinguished the main parts of speech from the subordinate parts, and also direct expressions ( κυρία λέξις kuria lexis ) from metaphorical expressions, and dealt with the emotions ( πάθη pathe ) of speech. He further distinguished a twofold reference of speech ( σχίσις schisis ) to things ( πράγματα pragmata ) and to the hearers, and referred poetry and rhetoric to
8662-498: The farmers pick the tips off of the pea plant. In Greece , Tunisia , Turkey , Cyprus , and other parts of the Mediterranean, peas are made into a stew with lamb and potatoes. In Hungary and Serbia , pea soup is often served with dumplings and spiced with hot paprika . In the United Kingdom , dried, rehydrated and mashed marrowfat peas , or cooked green split peas, known as mushy peas , are popular, originally in
8784-689: The finds are younger. Peas were present in Afghanistan c. 2000 BC, in Harappan civilization around modern-day Pakistan and western- and northwestern India in 2250–1750 BC. In the second half of the 2nd millennium BC, this legume crop appears in the Ganges Basin and southern India. In early times, peas were grown mostly for their dry seeds. From plants growing wild in the Mediterranean Basin, constant selection since
8906-513: The first record of pyroelectricity. The misconception arose soon after the discovery of the pyroelectric properties of tourmaline , which made mineralogists of the time associate the lyngurium with it. Lyngurium is described in the work of Theophrastus as being similar to amber , capable of attracting "straws and bits of wood", but without specifying any pyroelectric properties. The extent to which Theophrastus followed Aristotle's doctrines, or defined them more accurately, or conceived them in
9028-403: The food chain that would better use pulse-based proteins, further global production of pulses, better use crop rotations and address challenges in the global trade of pulses. Theophrastus Theophrastus ( / ˌ θ iː . ə ˈ f r æ s t ə s / ; Ancient Greek : Θεόφραστος , romanized : Theophrastos , lit. 'godly phrased'; c. 371 – c. 287 BC)
9150-472: The garden pea, which is marketed as a fresh or canned vegetable. The major producing countries of field peas are Russia and China , followed by Canada , Europe , Australia and the United States . Europe, Australia, Canada and the United States raise over 4.5 million acres (18,000 km²) and are major exporters of peas. In 2002, there were approximately 300,000 acres (1,200 km²) of field peas grown in
9272-418: The investigation overstepped the limits of experience, to have preferred to develop the difficulties rather than solve them, as is especially apparent in his Metaphysics . He was doubtful of Aristotle's teleology and recommended that such ideas be used with caution: With regard to the view that all things are for the sake of an end and nothing is in vain, the assignation of ends is in general not easy, as it
9394-413: The latter is sometimes mentioned. A book on wines and a book on plant smells may have once been part of the complete work. Although these works contain many absurd and fabulous statements, they include valuable observations concerning the functions and properties of plants. Theophrastus observed the process of germination and recognized the significance of climate to plants. Much of the information on
9516-400: The latter. He wrote at length on the unity of judgment , on the different kinds of negation, and on the difference between unconditional and conditional necessity. In his doctrine of syllogisms he brought forward the proof for the conversion of universal affirmative judgments, differed from Aristotle here and there in the laying down and arranging the modi of the syllogisms, partly in
9638-458: The life in animals does not need explanation or is to be explained only in this way, may it not be the case that in the heavens too, and in the heavenly bodies, movement does not need explanation or is to be explained in a special way? He recognised no activity without motion, and so referred all activities of the soul to motion: the desires and emotions to corporeal motion, judgment ( kriseis ) and contemplation to spiritual motion. The idea of
9760-461: The life of the seed will last longer if the storage temperature is reduced by 5 degree Celsius. Secondly, the storage moisture content will decrease if temperature is reduced by 1 degree Celsius. Cultivated legumes encompass a diverse range of agricultural classifications, spanning forage , grain , flowering, pharmaceutical/industrial, fallow/green manure, and timber categories. A notable characteristic of many commercially cultivated legume species
9882-432: The main crop and the planting of the next crop. Legume species grown for their flowers include lupins , which are farmed commercially for their blooms as well as being popular in gardens worldwide. Industrially farmed legumes include Indigofera and Acacia species, which are cultivated for dye and natural gum production, respectively. Fallow or green manure legume species are cultivated to be tilled back into
10004-569: The market gardens of Holland in the time of Henri IV , through the French ambassador. Green peas were introduced from Genoa to the court of Louis XIV of France in January 1660, with some staged fanfare. A hamper of them was presented before the King. They were shelled by the Savoyan comte de Soissons , who had married a niece of Cardinal Mazarin . Little dishes of peas were then presented to
10126-497: The mere arrangement and position ( taxis and thesis ) of bodies. Time he called an accident of motion, without, it seems, viewing it, with Aristotle, as the numerical determinant of motion. He attacked the doctrine of the four classical elements and challenged whether fire could be called a primary element when it appears to be compound, requiring, as it does, another material for its own nutriment. He departed more widely from Aristotle in his doctrine of motion, since on
10248-464: The minerals necessary for the manufacture of glass; for the production of various pigments of paint such as ochre ; and for the manufacture of plaster . Many of the rarer minerals were found in mines, and Theophrastus mentions the famous copper mines of Cyprus and the even more famous silver mines , presumably of Laurium near Athens – the basis of the wealth of the city – as well as referring to gold mines . The Laurium silver mines, which were
10370-552: The mines as a thing of the past. The ancient workings, consisting of shafts and galleries for excavating the ore, and washing tables for extracting the metal, may still be seen. Theophrastus wrote a separate work On Mining , which – like most of his writings – is a lost work . Pliny the Elder makes clear references to his use of On Stones in his Naturalis Historia of 77 AD, while updating and making much new information available on minerals himself. Although Pliny's treatment of
10492-400: The more tender the peas are, the more likely that they will be used in the final product. The peas must be put through the process of freezing shortly after being picked so that they do not spoil too soon. Once the peas have been selected, they are placed in ice water and allowed to cool. After, they are sprayed with water to remove any residual dirt or dust that may remain on them. The next step
10614-607: The most important contribution to botanical science during antiquity and the Middle Ages, the first systemization of the botanical world; on the strength of these works some, following Linnaeus , call him the "father of botany ". The Enquiry into Plants was originally ten books, of which nine survive. The work is arranged into a system whereby plants are classified according to their modes of generation, their localities, their sizes, and according to their practical uses such as foods, juices, herbs, etc. The first book deals with
10736-453: The nickname Theophrastus ("divine speaker") was reputedly given to him by Aristotle in recognition of his eloquent style. He came to Athens at a young age and initially studied in Plato's school . After Plato's death, he attached himself to Aristotle who took to Theophrastus in his writings. When Aristotle fled Athens, Theophrastus took over as head of the Lyceum . Theophrastus presided over
10858-510: The nitrogen available to other plants, thereby serving as fertilizer for future crops. In many traditional and organic farming practices, crop rotation or polyculture involving legumes is common. By alternating between legumes and non-legumes, or by growing both together for part of the growing season, the field can receive a sufficient amount of nitrogenous compounds to produce a good result without adding nitrogenous fertilizer. Legumes are often used as green manure . Sri Lanka developed
10980-436: The north of England, but now ubiquitously, and especially as an accompaniment to fish and chips or meat pies , particularly in fish and chip shops . Sodium bicarbonate is sometimes added to soften the peas. In 2005, a poll of 2,000 people revealed the pea to be Britain's seventh favourite culinary vegetable. Processed peas are mature peas which have been dried, soaked and then heat treated (processed) to prevent spoilage—in
11102-446: The one hand he extended it over all categories, and did not limit it to those laid down by Aristotle. He viewed motion, with Aristotle, as an activity, not carrying its own goal in itself ( ateles ), of that which only potentially exists, but he opposed Aristotle's view that motion required a special explanation, and he regarded it as something proper both to nature in general and the celestial system in particular: Surely, then, if
11224-412: The originals of his works, and designated him as his successor at the Lyceum. Eudemus of Rhodes also had some claims to this position, and Aristoxenus is said to have resented Aristotle's choice. Theophrastus presided over the Peripatetic school for 35 years, and died at age 85, according to Diogenes. He is said to have remarked, "We die just when we are beginning to live". Under his guidance,
11346-460: The ovary of a (pea) flower. The name is also used to describe other edible seeds from the Fabaceae such as the pigeon pea ( Cajanus cajan ), the cowpea ( Vigna unguiculata ), the seeds from several species of Lathyrus and is used as a compound form for example Sturt's desert pea . Peas are annual plants , with a life cycle of one year. They are a cool-season crop grown in many parts of
11468-469: The parts of plants; the second book with the reproduction of plants and the times and manner of sowing; the third, fourth, and fifth books are devoted to trees, their types, their locations, and their practical applications; the sixth book deals with shrubs and spiny plants; the seventh book deals with herbs; the eighth book deals with plants that produce edible seeds; and the ninth book deals with plants that produce useful juices, gums , resins , etc. On
11590-435: The peas are packaged and shipped out for retail sale. In the mid-19th century, Austrian monk Gregor Mendel 's observations of pea pods led to the principles of Mendelian genetics , the foundation of modern genetics . He ended up growing and examining about 28,000 pea plants in the course of his experiments. Mendel chose peas for his experiments because he could grow them easily, pure-bred strains were readily available, and
11712-543: The plants growing best at temperatures of 13 to 18 °C (55 to 64 °F). They do not thrive in the summer heat of warmer temperate and lowland tropical climates , but do grow well in cooler, high-altitude, tropical areas. Many cultivars reach maturity about 60 days after planting. Peas have both low-growing and vining cultivars. The vining cultivars grow thin tendrils from leaves that coil around any available support and can climb to be 1 to 2 metres (3 to 7 ft) high. A traditional approach to supporting climbing peas
11834-442: The proof of them, partly in the doctrine of mixture, i.e. of the influence of the modality of the premises upon the modality of the conclusion. Then, in two separate works, he dealt with the reduction of arguments to the syllogistic form and on the resolution of them; and further, with hypothetical conclusions. For the doctrine of proof , Galen quotes the second Analytic of Theophrastus, in conjunction with that of Aristotle, as
11956-523: The property of the state, were usually leased for a fixed sum and a percentage on the working. Towards the end of the fifth century BCE the output fell, partly owing to the Spartan occupation of Decelea from c. 413 BCE. But the mines continued to be worked, though Strabo ( c. 64 BCE to c. 24 CE) records that in his time the tailings were being worked over, and Pausanias ( c. 110 to c. 180 ) speaks of
12078-481: The remaining plant parts, is released back into the soil . In the soil, the amino acids are converted to nitrate ( NO − 3 ), that is available to other plants, thereby serving as fertilizer for future crops. Pea grading involves sorting peas by size, in which the smallest peas are graded as the highest quality for their tenderness. Brines may be used, in which peas are floated, from which their density can be determined. A variety of diseases affect peas through
12200-566: The same manner as pasteurizing . Cooked peas are sometimes sold dried and coated with wasabi , salt , or other spices. In North America pea milk is produced and sold as an alternative to cow milk for a variety of reasons. In East Asia, pea sprouts or shoots ( 豆苗 ; 완두순 ) were once dedicated cuisine when the plant was less highly available. Today, when the plant can be easily grown, fresh pea shoots are available in supermarkets or may be grown at home. In order to freeze and preserve peas, they must first be grown, picked, and shelled. Usually,
12322-596: The same themes, though supplementary in details. Like Aristotle, most of his writings are lost works . Thus Theophrastus, like Aristotle, had composed a first and second Analytic ( Ἀναλυτικῶν προτέρων and Ἀναλυτικῶν ὑστέρων ). He had also written books on Topics ( Ἀνηγμένων τόπων , Τοπικῶν and Τὰ πρὸ τῶν τόπων ); on the Analysis of Syllogisms ( Περὶ ἀναλύσεως συλλογισμῶν and Περὶ συλλογισμῶν λύσεως ), on Sophisms ( Σοφισμάτων ) and on Affirmation and Denial ( Περὶ καταφάσεως καὶ ἀποφάσεως ) as well as on
12444-415: The school flourished greatly—there were at one period more than 2,000 students, Diogenes affirms —and at his death, according to the terms of his will preserved by Diogenes, he bequeathed to it his garden with house and colonnades as a permanent seat of instruction. The comic poet Menander was among his pupils. His popularity was shown in the regard paid to him by Philip , Cassander , and Ptolemy , and by
12566-415: The seeds are also called pulses . Legumes are grown agriculturally, primarily for human consumption, but also as livestock forage and silage , and as soil-enhancing green manure . Well-known legumes include beans , chickpeas , peanuts , lentils , lupins , mesquite , carob , tamarind , alfalfa , and clover . Legumes produce a botanically unique type of fruit – a simple dry fruit that develops from
12688-467: The soil in order to exploit the high levels of captured atmospheric nitrogen found in the roots of most legumes. Numerous legumes farmed for this purpose include Leucaena , Cyamopsis , and Sesbania species. Various legume species are farmed for timber production worldwide, including numerous Acacia species and Castanospermum australe . Some legume trees, like the honey locust ( Gleditsia ) can be used in agroforestry . Others, including
12810-452: The special ability of fixing nitrogen from atmospheric, molecular nitrogen (N 2 ) into ammonia (NH 3 ). The chemical reaction is: Ammonia is converted to another form, ammonium ( NH + 4 ), usable by (some) plants by the following reaction: This arrangement means that the root nodules are sources of nitrogen for legumes, making them relatively rich in plant proteins . All proteins contain nitrogenous amino acids . Nitrogen
12932-546: The staple that kept famine at bay, as Charles the Good , count of Flanders , noted explicitly in 1124. Green "garden" peas, eaten immature and fresh, were an innovative luxury of Early Modern Europe . In England, the distinction between field peas and garden peas dates from the early 17th century: John Gerard and John Parkinson both mention garden peas. Sugar peas , which the French called mange-tout , because they were eaten pods and all, were introduced to France from
13054-406: The structure of the flowers protect them from cross-pollination, and cross pollination was easy. Mendel cross-bred tall and dwarf pea plants, green and yellow peas , purple and white flowers, wrinkled and smooth peas, and a few other traits. He then observed the resulting offspring. In each of these cases, one trait is dominant and all the offspring, or Filial-1 (abbreviated F 1 ) generation, showed
13176-406: The subject is more extensive, Theophrastus is more systematic and his work is comparatively free from fable and magic, although he did describe lyngurium , a gemstone supposedly formed of the solidified urine of the lynx (the best ones coming from wild males), which featured in many lapidaries until it gradually disappeared from view in the 17th century. It is mistakenly attributed to Theophrastus
13298-408: The subject. A paraphrase and commentary on this work was written by Priscian of Lydia in the sixth century. With this type of work we may connect the fragments on Smells , on Fatigue , on Dizziness , on Sweat , on Swooning , on Palsy , and on Honey . Fragments of a History of Physics ( Περὶ φυσικῶν ἱστοριῶν ) are extant. To this class of work belong the still extant sections on Fire , on
13420-507: The third-largest land plant family in terms of number of species, behind only the Orchidaceae and Asteraceae , with about 751 genera and some 19,000 known species, constituting about seven percent of flowering plant species. Many legumes contain symbiotic bacteria called Rhizobia within root nodules of their root systems (plants belonging to the genus Styphnolobium are one exception to this rule). These bacteria have
13542-410: The tropical and subtropical Asia, Africa, Australia and Oceania are minuscule flies that belong to the family Agromyzidae , dubbed "bean flies". They are considered to be the most destructive. The host range of these flies is very wide amongst cultivated legumes. Infestation of plants starts from germination through to harvest, and they can destroy an entire crop in early stage. Black bean aphids are
13664-437: The view that the sketches were written from time to time by Theophrastus, and collected and edited after his death; others, again, regard the Characters as part of a larger systematic work, but the style of the book is against this. Theophrastus has found many imitators in this kind of writing, notably Joseph Hall (1608), Sir Thomas Overbury (1614–16), Bishop Earle (1628), and Jean de La Bruyère (1688), who also translated
13786-595: The vines support is recommended, but not required. Extra dwarf are suitable for container growing, reaching only about 25 cm. Tall varieties grow to about 2m with support required. Some peas lack the tough membrane inside the pod wall and have tender edible pods. There are two main types: The name sugar pea can include both types or be synonymous with either snow peas or snap peas in different dictionaries. Likewise mangetout ( / ˈ m ɒ̃ ʒ ˌ t uː / ; from French : pois mange-tout , 'eat-all pea'). Snow peas and snap peas both belong to Macrocarpon Group,
13908-428: The well-known story that the works of Aristotle and Theophrastus were allowed to languish in the cellar of Neleus of Scepsis and his descendants. The most important of his books are two large botanical treatises, Enquiry into Plants ( Περὶ φυτῶν ἱστορία , generally known as Historia Plantarum ), and On the Causes of Plants ( Greek : Περὶ αἰτιῶν φυτικῶν , Latin : De causis plantarum ), which constitute
14030-412: The world; planting can take place from winter to early summer depending on location. The average pea weighs between 0.1 and 0.36 grams (0.004–0.013 oz). The immature peas (and in snow peas the tender pod as well) are used as a vegetable, fresh, frozen or canned; varieties of the species typically called field peas are grown to produce dry peas like the split pea shelled from a matured pod. These are
14152-596: Was Tyrtamus ( Τύρταμος ), but he later became known by the nickname "Theophrastus", given to him, it is said, by Aristotle to indicate the grace of his conversation (from Ancient Greek Θεός 'god' and φράζειν 'to phrase', i.e. divine expression). After receiving instruction in philosophy on Lesbos from one Alcippus, he moved to Athens , where he may have studied under Plato . He became friends with Aristotle, and when Plato died (348/7 BC) Theophrastus may have joined Aristotle in his self-imposed exile from Athens. When Aristotle moved to Mytilene on Lesbos in 345/4, it
14274-550: Was an ancient Greek philosopher and naturalist . A native of Eresos in Lesbos , he was Aristotle's close colleague and successor as head of the Lyceum , the Peripatetic school of philosophy in Athens . Theophrastus wrote numerous treatises across all areas of philosophy, working to support, improve, expand, and develop the Aristotelian system . He made significant contributions to various fields, including ethics , metaphysics , botany , and natural history . Often considered
14396-591: Was considered a fragment of a larger work by Usener in his edition (Theophrastos, Metaphysica , Bonn, 1890), but according to Ross and Fobes in their edition (Theophrastus, Metaphysica , Oxford, 1929), the treatise is complete (p. X) and this opinion is now widely accepted. There is no reason for assigning this work to some other author because it is not noticed in Hermippus and Andronicus , especially as Nicolaus of Damascus had already mentioned it. In his treatise On Stones ( Περὶ λίθων ), which would become
14518-709: Was declared by the Sixty-eighth session of the United Nations General Assembly . The Food and Agriculture Organization of the United Nations was nominated to facilitate the implementation of the year in collaboration with governments, relevant organizations, non-governmental organizations and other relevant stakeholders. Its aim was to heighten public awareness of the nutritional benefits of pulses as part of sustainable food production aimed towards food security and nutrition . The year created an opportunity to encourage connections throughout
14640-414: Was first published in a Latin translation by Theodore Gaza , at Treviso, 1483; in its original Greek it first appeared from the press of Aldus Manutius at Venice, 1495–98, from a third-rate manuscript, which, like the majority of the manuscripts that were sent to printers' workshops in the fifteenth and sixteenth century, has disappeared. Christian Wimmer identified two manuscripts of first quality,
14762-698: Was formed to develop the first pea reference genome , and the draft assembly was officially announced in September 2019. It covers 88% of the genome (3.92Gb) and predicted 44,791 gene-coding sequences. The pea used for the assembly was the inbred French cultivar "Caméor". There are many varieties (cultivars) of garden peas. Some of the most common varieties are listed here. PMR indicates some degree of powdery mildew resistance; afila types, also called semi-leafless, have clusters of tendrils instead of leaves. Unless otherwise noted these are so called dwarf varieties which grow to an average height of about 1m. Giving
14884-413: Was published in an obscure Austrian journal and was not rediscovered until about 1900. Some people experience allergic reactions to peas, as well as lentils , with vicilin or convicilin as the most common allergens. Favism , or Fava-bean-ism , is a genetic deficiency of the enzyme glucose-6-phosphate dehydrogenase that affects Jews , other Middle Eastern Semitic peoples, and other descendants of
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