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Triticum aestivum

(Bread Wheat)

Overview

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Common Names

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Click on the language to view common names.

Common Names in English:

Bread Wheat, Canadian Hard Winter Wheat, Common Wheat, Hard Red Winter Wheat, Wheat

Common Names in Swedish:

Vårvete

Description

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Genus Triticum

Plants annual . Culms usually erect , rarely decumbent at base . Leaf sheath split almost to base; ligule membranous; auricles lanceolate; leaf blade usually flat. Spike linear , oblong , or ovate , distichous; rachis disarticulating or not. Spikelets 1 per node, sessile, with (2 or) 3-9(-11) florets ; apical floret usually sterile ; rachilla without joints . Glumes ovate, oblong, or elliptic , ± leathery, 3-11(-13) -veined with 1 or 2 veins raised as keels, glabrous or hairy , smooth or very scabrous along keels, apex obliquely truncate , 1- or 2-toothed, larger tooth sometimes extending into longish awn . Lemma 7-11(-15) -veined, ± keeled , apex awned or awnless; callus very short, obtuse . Palea usually slightly shorter than lemma. Lodicules ciliate at margin . Caryopsis ovate or oblong, ± plump, deeply furrowed , apex ± hairy. x = 7.

About 25 species: distributed as cultivated plants almost throughout temperate regions of both hemispheres, also on tropical mountains; four species (all introduced ) in China.

The generic name "Gigachilon" (Seidl in Berchtold et al. , Oekon.-Techn. Fl. Böhm. 1: 425. 1836) was merely cited in synonymy (of Triticum polonicum) and was therefore not validly published (Saint Louis Code, Art. 34.1(c) ). Under Art. 43.1, combinations in "Gigachilon" published by Löve (Feddes Repert. 95: 496498. 1984) were not validly published either.[1]

Physical Description

Species Triticum aestivum

Culms hollow, 60-130(-150) cm tall, ca. 5-noded; nodes glabrous . Leaf blade flat, 10-24 × 0.4-1.5 cm, usually glabrous. Spike lax or dense, usually narrowed distally, square or subsquare in cross section , 5-18 cm, with up to 29 spikelets ; rachis disarticulating or tough and not disarticulating, margin ciliate ; internodes 3-4 mm. Spikelets with 4-9 florets (distal florets sterile). Glumes laxly appressed or adnate to floret, ovate or elliptic , sometimes very hard, distinctly or indistinctly to obscurely keeled , pubescent or glabrous; keel sometimes prolonged at apex into shortish tooth ; tooth apex subobtuse, acute, or tapering into short awn . Lemma oblong-lanceolate, pubescent or glabrous, awnless to long awned ; awn usually divergent. Palea subequaling lemma. Anthers yellow or purplish. Caryopsis usually free from lemma and palea. Fl. and fr. Apr-Aug. [source]

Habit: Graminoid

Flowers: Bloom Period: April, May, June. • Flower Color: inconspicuous, none

Size/Age/Growth

Size: 36-48" tall.

Habitat

Commonly cultivated, e.g. , in fields of Hordeum and Triticum; below 3500 m [2].

Typically found at an altitude of 0 to 5,478 meters (0 to 17,972 feet).[3]

Biology

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Reproduction

Duration: Annual

Growth

Soil: Minimum pH: 6.1 • Maximum pH: 6.5

Sunlight: Sun Exposure: Full Sun .

Taxonomy

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Synonyms

Triticum hybernum L. • Triticum macha Dekap. & Menab. • Triticum sativum Lam. • Triticum sativum Lam. var. aestivum (L.) Alph. Wood • Triticum sphaerococcum Percival • Triticum vulgare Vill. var. aestivum (L.) Spenn.

Similar Species

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Members of the genus Triticum

ZipcodeZoo has pages for 37 species, subspecies, varieties, forms, and cultivars in this genus:

T. aegilops (Goatgrass) · T. aestivum (Bread Wheat) · T. aestivum aestivum (Canadian Hard Winter Wheat) · T. aestivum sphaerococcum (Spherical-Seeded Wheat) · T. aestivum turgidum (Poulard Wheat) · T. aestivum vulgare (Canadian Hard Winter Wheat) · T. aethiopicum (Ethiopian Wheat) · T. araraticum (Wheat) · T. boeoticum (Wild Einkorn) · T. carthlicum (Persian Wheat) · T. compactum (Clubed Wheat) · T. dicoccon (Emmer) · T. durum (Durum Wheat) · T. fragile (Siberian Wheatgrass) · T. ispahanicum (Wheat) · T. karamyschevii (Karamyschev's Wheat) · T. longissimum (Goatgrass) · T. lorentii (Lorent's Goatgrass) · T. militinae (Wheat) · T. monococcum (Einkorn) · T. monococcum aegilopoides (Wild Einkorn Wheat (As T Baeoticum)) · T. monococcum monococcum (One-Grained Wheat) · T. polonicum (Polish Wheat) · T. spelta (Spelt) · T. timopheevii (Timopheev's Wheat) · T. turanicum (Oriental Wheat) · T. turgidum (Rivet Wheat) · T. turgidum carthlicum (Persian Black Wheat) · T. turgidum dicoccoides (Wild Emmer Wheat) · T. turgidum dicoccon (Two-Grained Wheat) · T. turgidum polonicum (Ethiopian Wheat) · T. turgidum turanicum (Khorassan Wheat) · T. umbellulatum (Goatgrass) · T. unilaterale (Mat-Grass Fescue) · T. urartu (Wheat) · T. vavilovii (Vavilov's Wheat) · T. zhukovskyi (Zhukovsky's Wheat)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 15, 2007:

Identifiers

Footnotes

  1. "Triticum". in Flora of China Vol. 22 Page 1, 386, 387, 441, 442, 444. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Triticum aestivum". in Flora of China Vol. 22 Page 442, 443. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 670.610 meters (2,200.164 feet), Standard Deviation = 1,303.670 based on 3,468 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2014-04-14