Einkorn wheat

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Einkorn wheat
Triticum monococcum0.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Triticum
Species:
T. monococcum
Binomial name
Triticum monococcum
L.
Synonyms

Triticum monococcum subsp. monococcum

Wild einkorn
Triticum boeoticum Boiss. ssp. thaoudar (Reuter ex Hausskn.) Schiem. - wild einkorn - TRBOT - Tracey Slotta @ USDA-NRCS PLANTS Database.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Triticum
Species:
T. boeoticum
Binomial name
Triticum boeoticum
Synonyms

Triticum monococcum ssp. boeoticum

Einkorn wheat (from German Einkorn, literally "single grain") can refer either to a wild species of wheat (Triticum) or to its domesticated form. The wild form is T. boeoticum (syn. T. m. subsp. boeoticum), and the domesticated form is T. monococcum (syn. T. m. subsp. monococcum). Einkorn is a diploid species (2n = 14 chromosomes) of hulled wheat, with tough glumes ('husks') that tightly enclose the grains. The cultivated form is similar to the wild, except that the ear stays intact when ripe [1] and the seeds are larger. The domestic form is known as "petit épeautre" in French, "Einkorn" in German, "einkorn" or "littlespelt" in English, "piccolo farro" in Italian and "escanda menor" in Spanish. [2] The name refers to the fact that each spikelet contains only one grain.

Contents

Einkorn wheat was one of the first plants to be domesticated and cultivated. The earliest clear evidence of the domestication of einkorn dates from 10,600 to 9,900 years before present (8650 BCE to 7950 BCE) from Çayönü and Cafer Höyük, two Early Pre-Pottery Neolithic B archaeological sites in southern Turkey. [3] Remnants of einkorn were found with the iceman mummy Ötzi, dated to 3100 BCE. [4]

History

Einkorn wheat commonly grows wild in the hill country in the northern part of the Fertile Crescent and Anatolia although it has a wider distribution reaching into the Balkans and south to Jordan near the Dead Sea. It is a short variety of wild wheat, usually less than 70 centimetres (28 in) tall and is not very productive of edible seeds.[ citation needed ]

The principal difference between wild einkorn and cultivated einkorn is the method of seed dispersal. In the wild variety the seed head usually shatters and drops the kernels (seeds) of wheat onto the ground. [1] This facilitates a new crop of wheat. In the domestic variety, the seed head remains intact. While such a mutation may occasionally occur in the wild, it is not viable there in the long term: the intact seed head will only drop to the ground when the stalk rots, and the kernels will not scatter but form a tight clump which inhibits germination and makes the mutant seedlings susceptible to disease. But harvesting einkorn with intact seed heads was easier for early human harvesters, who could then manually break apart the seed heads and scatter any kernels not eaten. Over time and through selection, conscious or unconscious, the human preference for intact seed heads created the domestic variety, which also has slightly larger kernels than wild einkorn. Domesticated einkorn thus requires human planting and harvesting for its continuing existence. [5] This process of domestication might have taken only 20 to 200 years with the end product a wheat easier for humans to harvest. [6]

Einkorn wheat is one of the earliest cultivated forms of wheat, alongside emmer wheat (T. dicoccum). Hunter gatherers in the Fertile Crescent may have started harvesting einkorn as early as 30,000 years ago, according to archaeological evidence from Syria. [7] [8] [9] Although gathered from the wild for thousands of years, einkorn wheat was first domesticated approximately 10,000 years BP in the Pre-Pottery Neolithic A (PPNA) or B (PPNB) periods. [10] Evidence from DNA fingerprinting suggests einkorn was first domesticated near Karaca Dağ in southeast Turkey, an area in which a number of PPNB farming villages have been found. [11] One theory by Yuval Noah Harari suggests that the domestication of einkorn was linked to intensive agriculture to support the nearby Göbekli Tepe site. [12]

An important characteristic facilitating the domestication of einkorn and other annual grains is that the plants are largely self-pollinating. Thus, the desirable (for human management) traits of einkorn could be perpetuated at less risk of cross-fertilization with wild plants which might have traits – e.g. smaller seeds, shattering seed heads, [1] as less desirable for human management. [13]

From the northern part of the Fertile Crescent, the cultivation of einkorn wheat spread to the Caucasus, the Balkans, and central Europe. Einkorn wheat was more commonly grown in cooler climates than emmer wheat, the other domesticated wheat. Cultivation of einkorn in the Middle East began to decline in favor of emmer wheat around 2000 BC. Cultivation of einkorn was never extensive in Italy, southern France, and Spain. Einkorn continued to be cultivated in some areas of northern Europe throughout the Middle Ages and until the early part of the 20th century. [14]

Taxonomy

Einkorn vs. common modern wheat varieties

Einkorn wheat is low-yielding but can survive on poor, dry, marginal soils where other varieties of wheat will not. It is primarily eaten boiled in whole grains or in porridge. [14] As with other ancient varieties of wheat, Einkorn is grouped with "the covered wheats" as its kernels do not break free from its seed coat (glume) with threshing and it is, therefore, difficult to separate the husk from the seed. [15]

Current use

Einkorn is a common food in northern Provence (France). [16] It is also used for bulgur or as animal feed in mountainous areas of France, India, Italy, Morocco, the former Yugoslavia, Turkey, and other countries. [15]

Nutrition and gluten

Einkorn contains gluten and has a higher percentage of protein than modern red wheats and is considered more nutritious because it has higher levels of fat, phosphorus, potassium, pyridoxine, and beta-carotene. [15]

Genetics

Disease resistance

Einkorn is the source of many potential introgressions for immunity Nikolai Vavilov called it an "accumulator of complex immunities." [17] T. monococcum is the source of Sr21, a stem rust resistance gene which has been introgressed into hexaploid worldwide. [18] It is also the source of Yr34, a resistance gene for yellow rust. [19]

Salt-tolerance gene

The salt-tolerance feature of T. monococcum has been bred into durum wheat. [20]

Images

Related Research Articles

<span class="mw-page-title-main">Wheat</span> Genus of grass cultivated for the grain

Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus Triticum ; the most widely grown is common wheat. The archaeological record suggests that wheat was first cultivated in the regions of the Fertile Crescent around 9600 BC. Botanically, the wheat kernel is a caryopsis, a type of fruit.

Tell Abu Hureyra is a prehistoric archaeological site in the Upper Euphrates valley in Syria. The tell was inhabited between 13,300 and 7,800 cal. BP in two main phases: Abu Hureyra 1, dated to the Epipalaeolithic, was a village of sedentary hunter-gatherers; Abu Hureyra 2, dated to the Pre-Pottery Neolithic, was home to some of the world's first farmers. This almost continuous sequence of occupation through the Neolithic Revolution has made Abu Hureyra one of the most important sites in the study of the origins of agriculture.

<span class="mw-page-title-main">Emmer</span> Type of wheat

Emmer wheat or hulled wheat is a type of awned wheat. Emmer is a tetraploid. The domesticated types are Triticum turgidum subsp. dicoccum and T. t. conv. durum. The wild plant is called T. t. subsp. dicoccoides. The principal difference between the wild and the domestic forms is that the ripened seed head of the wild plant shatters and scatters the seed onto the ground, while in the domesticated emmer, the seed head remains intact, thus making it easier for humans to harvest the grain.

<span class="mw-page-title-main">Durum</span> Species of wheat used for food

Durum wheat, also called pasta wheat or macaroni wheat, is a tetraploid species of wheat. It is the second most cultivated species of wheat after common wheat, although it represents only 5% to 8% of global wheat production. It was developed by artificial selection of the domesticated emmer wheat strains formerly grown in Central Europe and the Near East around 7000 BC, which developed a naked, free-threshing form. Like emmer, durum wheat is awned. It is the predominant wheat that grows in the Middle East.

<span class="mw-page-title-main">Neolithic Revolution</span> Transition in human history from hunter-gatherer to settled peoples

The Neolithic Revolution, also known as the First Agricultural Revolution, was the wide-scale transition of many human cultures during the Neolithic period in Afro-Eurasia from a lifestyle of hunting and gathering to one of agriculture and settlement, making an increasingly large population possible. These settled communities permitted humans to observe and experiment with plants, learning how they grew and developed. This new knowledge led to the domestication of plants into crops.

<span class="mw-page-title-main">Spelt</span> Species of grain

Spelt, also known as dinkel wheat or hulled wheat, is a species of wheat that has been cultivated since approximately 5000 BCE.

<span class="mw-page-title-main">Khorasan wheat</span> Species of grass

Khorasan wheat or Oriental wheat is a tetraploid wheat species. The grain is twice the size of modern-day wheat, and has a rich, nutty flavor.

<span class="mw-page-title-main">Founder crops</span> Original agricultural crops

The founder crops or primary domesticates are a group of flowering plants that were domesticated by early farming communities in Southwest Asia and went on to form the basis of agricultural economies across Eurasia. As originally defined by Daniel Zohary and Maria Hopf, they consisted of three cereals, four pulses, and flax. Subsequent research has indicated that many other species could be considered founder crops. These species were amongst the first domesticated plants in the world.

<i>Aegilops</i> Genus of grasses

Aegilops is a genus of Eurasian and North American plants in the grass family, Poaceae. They are known generally as goatgrasses. Some species are known as invasive weeds in parts of North America.

<span class="mw-page-title-main">Common wheat</span> Species of plant

Common wheat, also known as bread wheat, is a cultivated wheat species. About 95% of wheat produced worldwide is common wheat; it is the most widely grown of all crops and the cereal with the highest monetary yield.

<span class="mw-page-title-main">Taxonomy of wheat</span> Classification of wheat

During 10,000 years of cultivation, numerous forms of wheat, many of them hybrids, have developed under a combination of artificial and natural selection. This diversity has led to much confusion in the naming of wheats. Genetic and morphological characteristics of wheat influence its classification; many common and botanical names of wheat are in current use.

<span class="mw-page-title-main">Farro</span> Food made from the grains of certain wheat species

Farro refers to the grains of three wheat species, which are sold dried and cooked in water until soft. It is eaten plain or is often used as an ingredient in salads, soups, and other dishes.

<span class="mw-page-title-main">Triticeae</span> Tribe of grasses

Triticeae is a botanical tribe within the subfamily Pooideae of grasses that includes genera with many domesticated species. Major crop genera found in this tribe include wheat, barley, and rye; crops in other genera include some for human consumption, and others used for animal feed or rangeland protection. Among the world's cultivated species, this tribe has some of the most complex genetic histories. An example is bread wheat, which contains the genomes of three species with only one being a wheat Triticum species. Seed storage proteins in the Triticeae are implicated in various food allergies and intolerances.

<span class="mw-page-title-main">Barley</span> Cereal grain

Barley, a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains; it was domesticated in the Fertile Crescent around 9000 BC, giving it nonshattering spikelets and making it much easier to harvest. Its use then spread throughout Eurasia by 2000 BC. Barley prefers relatively low temperatures to grow, and well-drained soil. It is relatively tolerant of drought and soil salinity, but is less winter-hardy than wheat or rye.

<span class="mw-page-title-main">Grain</span> Edible dry seed

A grain is a small, hard, dry fruit (caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legumes.

Iraq ed-Dubb, or the Cave of the Bear, is an early Neolithic archeological site 7 km (4.3 mi) northwest of Ajlun in the Jordan Valley, in modern-day Jordan. The settlement existed before 8,000 BCE and experimented with the cultivation of founder crops, side by side with the harvesting of wild cereals. Along with Tell Aswad in Syria, the site shows the earliest reference to domestic hulled barley between 10,000 and 8,800 BCE. The site is located on a forested limestone escarpment above the Wadi el-Yabis in northwest Jordan. An oval-shaped stone structure was excavated along with two burials and a variety of animal and plant remains.

<i>Hordeum spontaneum</i> Species of grass

Hordeum spontaneum, commonly known as wild barley or spontaneous barley, is the wild form of the grass in the family Poaceae that gave rise to the cereal barley. Domestication is thought to have occurred on two occasions, first about ten thousand years ago in the Fertile Crescent and again later, several thousand kilometres further east.

<span class="mw-page-title-main">Ancient grains</span> Small, hard, dry seeds used as food

Ancient grains is a marketing term used to describe a category of grains and pseudocereals that are purported to have been minimally changed by selective breeding over recent millennia, as opposed to more widespread cereals such as corn, rice and modern varieties of wheat, which are the product of thousands of years of selective breeding. Ancient grains are often marketed as being more nutritious than modern grains, though their health benefits over modern varieties have been disputed by some nutritionists.

Chogha Golan is an aceramic Neolithic archaeological site in the foothills of the Zagros Mountains in Iran, about 200 m (656 ft) from the right bank of the Konjan Cham River. Located in a semi-arid region about 30 km (19 mi) north of Mehran, Chogha Golan is one of the earliest aceramic Neolithic sites found in Iran. The people of Chogha Golan relied primarily on the exploitation of wild plants and hunting. Chogha Golan is notable for the early presence of domesticated emmer wheat, dating to around 9,800 BP as such the archaeobotanical remains from Chogha Golan shows the earliest record of long-term plant management in Iran.

References

  1. 1 2 3 Brown, Terence; Jones, Martin; Powell, Wayne; Allaby, Robin (2009). "The complex origins of domesticated crops in the Fertile Crescent" (PDF). Trends in Ecology & Evolution (Review). 24 (2). Cell Press: 103–109. doi:10.1016/j.tree.2008.09.008. ISSN   0169-5347. PMID   19100651.
  2. Le Brun, Alain (1992). "El poblamiento neolítico en la Isla de Chipre: el establecimiento de Khirokitia". Treballs d'Arqueologia (2): 51–67. ISSN   1134-9263. Centre national de la recherche scientifique (França). Open Access logo PLoS transparent.svg
  3. Weiss, Ehud; Zohary, Daniel (October 2011). "The Neolithic Southwest Asian Founder Crops: Their Biology and Archaeobotany". Current Anthropology . 52 (S4): S239–S240. doi:10.1086/658367. S2CID   83924400 via JSTOR.
  4. "5,300 Years Ago, Ötzi t'he Iceman Died. Now We Know His Last Meal". Science & Innovation. National Geographic . 2018-07-12. Archived from the original on July 13, 2018. Retrieved 2019-07-31.
  5. Weiss and Zohary, p. S239-S242
  6. Anderson, Patricia C. (1991). "Harvesting of Wild Cereals During the Natufian as seen from Experimental Cultivation and Harvest of Wild Einkorn Wheat and Microwear Analysis of Stone Tools". In Bar-Yosef, Ofer (ed.). Natufian Culture in the Levant. International Monographs in Prehistory. Ann Arbor, Michigan, US: Berghahn Books. p. 523.
  7. Arranz-Otaegui, A., Carretero, L. G., Ramsey, M. N., Fuller, D. Q., & Richter, T. (2018). "Archaeobotanical evidence reveals the origins of bread 14,400 years ago in northeastern Jordan." Proceedings of the National Academy of Sciences. doi:10.1073/pnas.1801071115
  8. "Crops evolving ten millennia before experts thought". ScienceDaily. 23 October 2017. Retrieved 23 October 2017.
  9. Allaby, Robin; Stevens, Chris; Lucas, Leilani; Maeda, Osamu; Fuller, Dorian (Oct 2017). "Geographic mosaics and changing rates of cereal domestication". Philosophical Transactions of the Royal Society B . 372 (1735). The Royal Society: 20160429. doi:10.1098/rstb.2016.0429. PMC   5665816 . PMID   29061901.
  10. Zohary, Daniel; Hopf, Maria; Weiss, Ehud (2012). Domestication of Plants in the Old World: The Origin and Spread of Domesticated Plants in Southwest Asia, Europe, and the Mediterranean Basin (Fourth ed.). Oxford University Press (OUP). p. 38. ISBN   9780199549061.
  11. Heun, M.; Schäfer-Pregl, R.; Klawan, D.; Castagna, R.; Accerbi, M.; Borghi, B.; Salamini, F. (1997). "Site of Einkorn Wheat Domestication Identified by DNA Fingerprinting". Science . 278 (5341): 1312–1314. Bibcode:1997Sci...278.1312H. doi:10.1126/science.278.5341.1312.
  12. Harari, Yuval N.; Watzman, Haim (10 February 2015). Sapiens : a brief history of humankind. Translated by Purcell, John (First U.S. ed.). New York: Harper. ISBN   978-0-06-231609-7. OCLC   896791508.
  13. Bellwood, Peter (2005). First Farmers: The Origins of Agricultural Societies. Malden, MA: Blackwell Publishing. p. 46-49.
  14. 1 2 Hopf, M.; Zohary, Daniel (2000). Domestication of Plants in the Old World: The Origin and Spread of Cultivated Plants in West Asia, Europe, and the Nile Valley (3rd ed.). Oxford, Oxfordshire: Oxford University Press. pp. 33–43. ISBN   0-19-850356-3.
  15. 1 2 3 Stallknecht, G. F., Gilbertson, K. M., and Ranney, J.E. (1996), "Alternative Wheat Cereals as Food Grains: Einkorn, Emmer, Spelt, Kamut, and Triticale" in J. Janick, ed., Progress in New Crops, Alexandria, VA: ASHA Press, pp. 156-170
  16. Payany, E (2011). Le Petit Épeautre. LaPlage. ISBN   978-2-84221-283-4.
  17. Zaharieva, Maria; Monneveux, Philippe (2014). "Cultivated einkorn wheat (Triticum monococcum L. subsp. monococcum): the long life of a founder crop of agriculture". Genetic Resources and Crop Evolution. 61 (3). Springer Science and Business Media LLC: 677–706. doi:10.1007/s10722-014-0084-7. eISSN   1573-5109. ISSN   0925-9864. S2CID   16551824.
  18. Roelfs, Alan P.; Singh, R. P.; Saari, E. E. (1992). Rust diseases of wheat : concepts and methods of disease management. Mexico, D.F: CIMMYT (International Maize and Wheat Improvement Center). p. 81. ISBN   968-6127-47-X. OCLC   26827677.
  19. Baranwal, Deepak (2022). "Genetic and genomic approaches for breeding rust resistance in wheat". Euphytica. 218 (11). doi: 10.1007/s10681-022-03111-y . S2CID   252973250.
  20. "World Breakthrough On Salt-Tolerant Wheat". ScienceDaily. March 11, 2012.