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Wheat Taxonomy

Wheat Taxonomy

Classification of Triticum according to Morris & Sears 1967, with nomenclatural corrections

Morris & Sears (1967) [reference] revised the Bowden (1959) [reference] cytogenetically based treatment by eliminating several taxa and giving "timopheevii" species status. Kimber & Sears (1987) [reference] should be consulted for the most current version of the genomic taxonomic concept. The Morris & Sears classification is of historical significance and is presented here in its original form except for spelling and authority corrections. The currently accepted genome symbols also have been added.

Triticum L. sensu lato

1. Diploids (2n = 2x = 14)

GENOME SPECIES
A Triticum monococcum L.
S Triticum speltoides (Tausch) Gren. ex K. Richter
Sb Triticum bicorne Forsskål
Sl Triticum longissimum (Schweinf. & Muschl. in Muschl.) Bowden
T Triticum tripsacoides (Jaub. & Spach) Bowden
D Triticum tauschii (Cosson) Schmalh. [synonymous]
Sl Triticum sharonense (Eig) Feldman & Sears
N Triticum uniaristatum (Vis.) K.Richter
C Triticum dichasians (Zhuk.) Bowden [not validly published]
U Triticum umbellulatum (Zhuk.) Bowden

2. Allopolyploid wheats (2n = 4x = 28 or 2n = 6x = 42)

GENOME SPECIES
BA Triticum turgidum L.
var. dicoccoides (Körn. ex Asch. & Graebner) Bowden
Varietal groups:
dicoccum (based on Triticum dicoccum Schrank ex Schübler)
durum (based on Triticum durum Desf.)
urgidum (based on Triticum turgidum L.)
polonicum (based on Triticum polonicum L.)
carthlicum (based on Triticum carthlicum Nevski in Kom.)
GA Triticum timopheevii (Zhuk.) Zhuk.
GAA Triticum zhukovskyi Menabde & Ericzjan
BAD Triticum aestivum L.
Varietal groups:
spelta (based on Triticum spelta L. and Triticum macha Dekapr. & Menabde)
vavilovii (based on Triticum vavilovii (Tumanian) Jakubz.)
aestivum (based on Triticum aestivum L.)
compactum (based on Triticum compactum Host)
sphaerococcum (based on Triticum sphaerococcum Percival)

3. Other allopolyploids (2n = 4x = 28 or 2n = 6x = 42)

GENOME SPECIES
DN Triticum ventricosum (Tausch) Ces., Pass. & Gilelli
DM Triticum crassum (Boiss.) Aitch. & Hemsl.
DMM Triticum crassum (Boiss.) Aitch. & Hemsl.
DMU Triticum juvenale Thell.
US Triticum kotschyi (Boiss.) Bowden [includes T. peregrinum]
UM Triticum ovatum (L.) Raspail [ambiguous]
UM Triticum triaristatum (Willd.) Godron & Gren. [ambiguous]
UMN Triticum triaristatum (Willd.) Godron & Gren. [ambiguous]
UM Triticum macrochaetum (Shuttlew. & A.Huet ex Duval-Jouve) K.Richter
UC Triticum triunciale (L.) Raspail
CD Triticum cylindricum (Host) Ces., Pass. & Gibelli
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