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Einkorn wheat

(Redirected from Triticum monococcum)

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The kernels of einkorn wheat are inside these spikelets.

Einkorn wheat (from German Einkorn, literally "single grain") can refer either to the wild species of wheat, Triticum boeoticum, or to the domesticated form, Triticum monococcum. The wild and domesticated forms are either considered separate species, as here, or as subspecies: Triticum monococcum subsp. boeoticum (wild) and T. monococcum subsp. monococcum (domesticated). 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 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.<ref name=LeBrun1992>Template:Cite journalTemplate:Open access</ref> The name refers to the fact that each spikelet contains only one grain.

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.<ref>Weiss, Ehud and Zohary, Daniel (October 2011), "The Neolithic Southwest Asian Founder Crops: Their Biology and Archaeobotany", Current Anthropology, Vol 52, No. S4, pp. S239-S240. Downloaded from JSTOR</ref> Remnants of einkorn were found with the iceman mummy Ötzi, dated to 3100 BCE.

History

Wild einkorn, Karadag, central Turkey

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 Template:Convert tall and is not very productive of edible seeds.

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. 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.<ref>Weiss and Zohary, p. S239-S242</ref> This process of domestication might have taken only 20 to 200 years with the end product a wheat easier for humans to harvest.<ref>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 Natufian Culture in the Levant ed. by Ofer Bar-Yosef, Ann Arbor:International Monographs in Prehistory. p. 523</ref>

Template:Infobox mountain 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 long as 30,000 years ago, according to archaeological evidence from Syria.<ref>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</ref><ref>Template:Cite web</ref><ref name = Allaby>Template:Cite journal</ref> 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.<ref name=ZoharyHopf38>Template:Cite book</ref> 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.<ref name="Heun1997">Template:Cite journal</ref>

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, etc. – less desirable for human management.<ref>Bellwood, Peter (2005), First Farmers: The Origins of Agricultural Societies, Malden, MA: Blackwell Publishing, pp. 46-49</ref>

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.<ref name=ZoharyHopf3343>Template:Cite book</ref>

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. Its flour lacks the rising characteristics desirable for bread.<ref name=ZoharyHopf3343 />

Einkorn, as with other ancient varieties of wheat, 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.<ref name=Stallknecht>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</ref>

Current use

Einkorn is a popular food in northern Provence (France).<ref>Template:Cite book</ref> 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.<ref name=Stallknecht />

Nutrition and gluten intolerance

Einkorn has a higher percentage of protein than modern red wheats and is considered more nutritious because it has also higher levels of fat, phosphorus, potassium, pyridoxine, and beta-carotene.<ref name=Stallknecht />

None of the species and hybrids of wheat are suitable for people with gluten-related disorders, as celiac disease, non-celiac gluten sensitivity and wheat allergy.<ref name=PenaginiDilillo>Template:Cite journal</ref><ref name=FasanoSapone2015>Template:Cite journal</ref>

Salt-tolerance gene

Australian scientists have succeeded in breeding the salt-tolerance feature of T. monococcum into durum wheat.<ref>Template:Cite news</ref>

References

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External links

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